Loongson

Loongson Technology Corporation LimitedFile:Frameless

Native name

| 龙芯中科技术有限公司
Type| Public, Mixed ownership enterprise

Traded as

| SSE: 688047
Industry| Semiconductor technology industry
Founded| April 2010; 16 years ago (2010-04)
Founder| Hu Weiwu [zh; zh; 胡伟武]
Headquarters| People's Republic of China
Loongson Industrial Park, Building 2, Zhongguancun Environmental protection park, Haidian District, Beijing, China

Area served

| Global

Key people

| Hu Weiwu
(Chairman)
Services| Chip design, motherboard design, operating system and kernel maintenance, important software and library maintenance

Number of employees

| More than 400 (estimate)
Website| {{{1}}}
LoongsonFile:Frameless

General Info
Marketed by| Loongson Technology, Jiangsu Lemote Tech Co., Ltd, Dawning Information Industry, and others
Designed by| Institute of Computing Technology (ICT), Chinese Academy of Sciences, Loongson Technology, Jiangsu Lemote Tech Co., Ltd
Common manufacturer(s)|

* STMicroelectronics, SMIC

Performance
Max. CPU clock rate| 800 MHz to 2.0 GHz
HyperTransport speeds| 800 MHz to 3.0 GHz
Architecture and classification
Application| Desktop, server, supercomputer, industrial device, embedded device, aerospace
Min. feature size| 180 nm to 12 nm
Microarchitecture| see text
Instruction set|

* MIPS64 (with LoongISA extensions)

* LoongArch

Physical specifications
Cores|

* 1–8

History

Loongson (simplified Chinese: 龙芯; traditional Chinese: 龍芯; pinyin: Lóngxīn; literally: 'Dragon Core')[1] is the name of a family of general-purpose, MIPS architecture-compatible, later in-house LoongArch architecture microprocessors, as well as the name of the Chinese fabless company (Loongson Technology) that develops them. The processors are alternately called Godson processors,[2] which is described as its academic name.[3]

## Contents

* 1 History
* 1.1 U.S. sanctions
* 2 Instruction set architectures
* 2.1 MIPS
* 2.2 LoongISA
* 2.3 LoongArch
* 3 Cores
* 4 Processor families
* 4.1 Godson-1
* 4.2 Godson-2 / Loongson 2
* 4.3 Godson 3 / Loongson 3 MIPS processors
* 4.3.1 1000 series
* 4.3.2 1500 and 2000 series
* 4.3.3 3000 series
* 4.3.4 4000 series
* 4.4 Loongson 3 LoongArch processors
* 4.4.1 5000 series, transition to LoongArch
* 4.4.2 6000 series
* 4.4.3 7000 series
* 5 Supported software
* 5.1 Godson
* 5.1.1 Operating systems
* 5.1.2 Compiler support
* 5.2 LoongArch
* 5.2.1 Operating systems
* 5.2.2 Compiler support
* 6 Loongson microprocessor specifications
* 7 Loongson-based systems
* 7.1 Personal computers
* 7.2 Supercomputers
* 8 See also
* 9 Notes
* 10 References
* 11 External links

## History

The Godson processors, based on MIPS architecture, were initially developed at the Institute of Computing Technology (ICT), Chinese Academy of Sciences (CAS).[4] The chief architect was Hu Weiwu [zh; zh; 胡伟武].[5] The development of the first Loongson chip was started in 2001.[5][6] The aim of the Godson project was to develop "high performance general-purpose microprocessors in China",[2] and to become technologically self-sufficient as part of the Made in China 2025 plan.[5] The development was supported by funding via the Chinese Communist Party's 10th and 11th Five-Year Plans.[7][8]

In 2010 the company was commercialized as a separate entity,[5] and in April 2010 Loongson Technology Corporation Limited was formally established and settled in Zhongguancun, Beijing, China. The company is a public–private partnership between ICT and Beijing-based chip designer BLX IC Design Corporation.[6] BLX itself was a spin-off from ICT, and was founded in 2002 with Jiangsu Zhongyi Group. As Loongson is a fabless designer, at least some processors were fabricated and marketed by STMicroelectronics.[6][5]

The South China Morning Post reported that since 2020 Loongson has been partnering with UnionTech and Sunway to develop and promote the Debian-Linux-based Deepin operating system in order to reduce China's dependency on Microsoft Windows.[9][10]

In 2021, Loongson filed for an initial public offering on the Shanghai Stock Exchange STAR Market.[5][11] The company was seeking to raise US$500 million.[11] Details from this IPO suggested Loongson had needed RMB 400 million annual funding in its first 10 years of existence and that the company had only broken even in 2015.[12]

In April 2024 Loongson processors got a large boost when a school district in the city of Hebi commenced a trial of 10,000 PCs powered by computers featuring the Loongson 3A5000 processor and the Deepin-based Unity Operating System.[13][14] According to The Register, this trial project is to be used to promote the use of Loongson-and-Linux computers within the Chinese school system, which could potentially result in 50 million Loongson-based computers being sold to Chinese schools every year until 2030.[13]

### U.S. sanctions

In March 2023, the United States Department of Commerce added Loongson to the Bureau of Industry and Security's Entity List for acquisition of American technology to support the People's Liberation Army (PLA).[15][16]

## Instruction set architectures

### MIPS

Loongson began by using the MIPS64 instruction set architecture (ISA). The internal microarchitecture was independently developed by ICT. Early implementations of the family lacked four instructions patented by MIPS Technologies (US4814976A, unaligned load-store) to avoid legal issues.[17][18]

In 2007, a deal was reached by MIPS Technologies and ICT. STMicroelectronics bought a MIPS license for Loongson, and thus the processor can be promoted as MIPS-based or MIPS-compatible instead of MIPS-like.[19][20][21]

In June 2009, ICT licensed the MIPS32 and MIPS64 architectures directly from MIPS Technologies.[22]

In August 2011, Loongson Technology Corp. Ltd. licensed the MIPS32 and MIPS64 architectures from MIPS Technologies, Inc. for continued development of MIPS-based Loongson CPU cores.[23][24]

In January 2024, Loongson won a case over rights to use MIPS architecture.[25]

### LoongISA

The Loongson 3A2000 in 2015 saw the adoption of LoongISA 1.0, an expanded instruction set that is a superset of MIPS64 release 2.[26][8] It can be broken down into:

* LoongEXT, general-purpose extensions, 148 instructions
* LoongVZ, virtualisation extensions to the "VZ" system introduced in MIPS64 release 5, 5 instructions
* LoongBT, faster x86 and ARM binary translation, 213 instructions
* LoongSIMD, formerly LoongMMI (in Loongson 2E/F), for 128-bit SIMD, 1014 instructions
* MIPS SIMD Architecture (MSA), DSP, and VZ modules from MIPS Release 5

The LoongISA instructions were introduced as part of the GS464E cores.[8] The binary translation instructions have the specific benefit of speeding up Intel x86 CPU emulation at a cost of 5% of the total die area. The new instructions help a QEMU hypervisor translate instructions from x86 to MIPS with only a reported 30% performance penalty.[27][28]

### LoongArch

Loongson moved to their own processor instruction set architecture (ISA) in 2021 with the release of the reduced instruction set computer (RISC) Loongson 3 5000 series.[29][30] A Loongson developer described it as "... a new RISC ISA, which is a bit like MIPS or RISC-V. LoongArch includes a reduced 32-bit version (LA32R), a standard 32-bit version (LA32S) and a 64-bit version (LA64)".[31] The stated rationale was to make Loongson and China not dependent on foreign technology or authorisation to develop their processor capability, while not infringing on any technology patents.[32]

The ISA has been referred to as "a fork of MIPS64r6" due to a perceived lack of changes judging from instruction listings.[33][34] The Register reported in November 2021 that LoongArch might combine the best parts of MIPS and RISC-V, along with custom instructions.[35]

## Cores

Loongson has three main families of processor cores, some of which are available as IP cores:[36]

* GS464 series: MIPS64 core with four-way superscalar out-of-order issue.[37] The design originated from the Loongson 2F processor.[8] It was first widely used in the Loongson 3A processor, before also being used in the Loongson 2 series.[37][38]
* GS464V was first introduced in 2010 with the Godson 3B, and is a GS464 with vector capabilities.[7][39]
* GS464E is an improved version of the GS464.[40] Development had started in 2012 after shortcomings were found in the GS464 processor.[8] The core has multiple improvements, including larger caches and better branch prediction among others, and was better optimised.[8] The core was extended to support LoongISA (extending the MIPS64 R2 architecture).[40]
* GS464EV is a development of the GS464 series, first used by the 3A4000 processor[41]
* LA464 is the development of the GS464 to support LoongArch. While the initial core of the 3A5000 was noted to be GS464, due to incompatible instruction sets Loongson renamed the 3A5000 core to LA464 in their documentation in August 2021.[42]
* LA664 is the architecture for the 3A6000/3C6000 series processors.

It has been noted by the community that the naming of the Loongson microarchitectures is not consistent, with different products being noted to have the same processor core, even though the instructions sets might not be exactly compatible.[42]

## Processor families

Loongson has built 4 processor families from their architectural cores.[28] These are the:[28]

* Godson-1, for consumer electronics and embedded applications
* Godson-2, single core processors for embedded applications and low performance personal computers[note 1]
* Godson-3, multi-core processors for higher performance computers, high-performance computing and servers[note 2]
* Loongson 3, LoongArch processors

### Godson-1

The first Loongson processor, the Godson-1, was designed in 2001, released in 2002, and is a 32-bit CPU running at a clock speed of 266 MHz.[6][3][28] It is fabricated with 0.18 micron CMOS process, has 8 KB of data cache, 8 KB of instruction cache and a 64-bit floating-point unit, capable of 200 double-precision MFLOPS.[43] Godson-1 series chips either use the GS132 or GS232 cores.[44]

Loongson X is a radiation hardened version of the GS232 core used in the Godson-1.[8]

### Godson-2 / Loongson 2

Loongson 2F CPU from STMicroelectronics in a Gdium laptop

The Loongson 2 is a family of MIPS III compatible processors.[45][3] It adds 64-bit ability to the Loongson architecture.[6][28] Later Loongson 2 processors migrated to being MIPS64 compatible, due to sharing the GS464 core with the Loongson 3 series.[8]

The development plan for the Godson-2 was to develop it from a CPU to a SOC.[3][7] The 2E (2006) was a CPU, the 2F (2007) integrated the north bridge, the 2G (2008) had a hyper transport link between the CPU/north bridge and an integrated GPU/south bridge, and the 2H (2009) integrated all these functions into a SOC.[3][7] The design of the 2F was the basis of the GS464 core.[8] The 2G uses a single GS464 core;[7] the 2H uses the GS464V core, as a single-core version of the initial Godson 3B.[39]

### Godson 3 / Loongson 3 MIPS processors

Loongson 3B1500E CPU Lemote-A1310 mini-ITX motherboard (with Loongson 3B1500E) Loongson 3A3000 CPU

The Loongson 3 family of processors are "...multi-core CPU[s] designed for high performance desktops, servers, and clusters".[46][28] They were designed as the first Loongson processors that had multiple cores.[37] The processors were initially designed to use LoongISA - i.e. the MIPS64 release 2 ISA with additional extensions.[37] The designers also attempted to optimise x86 translation on the chip.[3]

#### 1000 series

The first production processor was the Loongson 3A, which used 4 GS464 cores.[37][27]

The designers noted that they would produce a 3B chip with enhanced processing and vector capabilities, with 8 cores, and a 3C for server applications with up to 16 cores.[7][28] The 8-core Loongson 3B was noted to use the upgraded GS464V core, with extended vector capabilities.[39] This was followed by the Loonson 3C which used 16 GS464V cores.[39]

The 3B1000, and related 2I, both failed as processors due to design errors.[26] In May 2013 development of the 3C was suspended, in favour of developing the 3A2000 processor.[26]

#### 1500 and 2000 series

In 2015, the 3A1500 and 3B2000 were released using the enhanced GS464E cores.[8] The improved microarchitecture core allowed better performance, reportedly 3 times as fast as the 3A1000, as well as introducing the LoongISA enhanced instruction set.[8] The 3A1500 was for embedded applications, while the 3B2000 was for servers and PCs.[8]

#### 3000 series

In 2017, Loongson released the 3A3000. The performance of the 3A3000 is reported to be equivalent to the Intel J1900 processor (released in 2013).[41]

#### 4000 series

In late-2019 the 3A and 3B 4000 series were released. They used the upgraded GS464EV microarchitecture.[41]

### Loongson 3 LoongArch processors

#### 5000 series, transition to LoongArch

In July 2021 the Loongson 3 5000 series was released.[30] The processor series was Loongson's first with their own developed instruction set architecture (ISA), called "LoongArch".[30] The processors announced included the 3A5000, a four-core desktop CPU, and the 3C5000L, a sixteen-core server CPU based on four 3A5000 in a single package.[33][29][35] Both CPUs were reported to be fabricated on a 12 nm process. While the processor was noted to be using the GS464V cores initially, due to incompatibility with previous versions, the cores were renamed to LA464 in August 2021.[42]

The Register reported that "the 3A5000 is said to be 50% faster and 30% more power efficient" than the preceding 3A4000.[35] Phoronix reported that the 3A5000 CPU was "roughly on a par with the likes of the Intel Core i3 8109U / Core 2 Quad Q9500 / Core i5 750 (roughly the state of the art in 2008), or Armv8-based Phytium FT-2000".[30]

In April 2023, Loongson launched the 3D5000 processor for data centers and cloud computing, based on the LoongArch instruction set architecture.[47]

#### 6000 series

Loongson 3A6000 CPU

In 2022 Loongson announced their 6000 series processors.[48] The company said that the updated processor architecture would use new "LA664" cores[48] and that the single-core performance would rival that of AMD's Zen 3 and Intel's Tiger Lake (11th-generation Core) architecture (launched in 2020).[48]

In November 2023 Loongson debuted the 3A6000 processor.[49] The processor is fabricated using a 14 nm or 12 nm process and supports the fairly old DDR4 standard for memory.[50] The Register reported that Loongson had demonstrated benchmarks suggesting that the 3A6000 processor was competitive with an Intel 10th-generation Core processor (launched in 2019).[49]

According to reports, Loongson's 3C6000 was to become available in the fourth quarter of 2024.[51] The CPU is a monolithic chip with 16 cores; it features the LA664 proprietary MIPS-derived microarchitecture supporting simultaneous multithreading technology (SMT).[51] The 3C6000 processor features four DDR4-3200 memory interfaces. According to reports, the CPU's performance compares to that of Intel's 16-core Xeon Silver 4314 processor, which was released in the second quarter of 2021.[51]

#### 7000 series

In 2024, Loongson reportedly began its transition to the 7 nm process, which was said to potentially provide a 20% to 30% increase in performance to the 3A7000 CPU.[52] The 7 nm chips, which could go on sale in 2025, will probably be produced entirely in China, due to US sanctions.[52] In November 2025, an analyst reported that the 3D7000 CPU family would probably go on sale in 2027, use a sub-10 nm process technology and would utilise chiplets with over 32 cores.[53] Loongson was said to have stated that the company had already started the IP design work and that the finished product would include modern technology, e.g. DDR5 and PCIe 5.0.[53]

## Supported software

### Godson

#### Operating systems

The Godson processors are mainly designed around using the Linux operating system.[54] Any operating system supporting the MIPS architecture should theoretically work. Windows CE was ported to a Godson-based system with minimal effort.[55] In 2010, Lemote ported an Android distribution to the Godson platform.[56]

Godson machines are used in the package-building and CI infrastructure of Debian and Golang, respectively. This is partially because of Loongson's status as the only vendor producing application-grade MIPS CPUs for retail.[57]

#### Compiler support

The GNU Compiler Collection (GCC) is the main compiler for software development on the Loongson platform.[58][59]

Before 2021 LLVM support was still inadequate due to missing workarounds for Loongson's CPU errata on MIPS.[60][42]

ICT also ported Open64 to the Loongson II platform.[61]

### LoongArch

#### Operating systems

Chinese Linux distributions supporting LoongArch include Kylin, Loongnix, Deepin[62], Unity Operating System, AOSC OS, and Loong Arch Linux. There are efforts to build LoongArch support into community versions of Linux.[42]

Since 2022, OpenHarmony, a Chinese operating system similar to Android, supports LoongArch.[63]

Other common Linux distributions supporting LoongArch include Alpine Linux (since 3.21.0), Debian, Gentoo Linux, Nixpkgs (since 25.11), OpenWrt (since 24.10), and Slackware.[citation needed]

#### Compiler support

LoongArch is supported by the GCC, LLVM, Golang compilers.[64] OpenJDK and.NET ports exist but are not accepted by upstream developers due to U.S. sanctions against Loongson.[citation needed]

## Loongson microprocessor specifications

This list is incomplete; you can help by expanding it.

Series  | Model  | Frequency
(MHz)  | Architecture  | Microarchitecture | Year  | Cores  | Process
(nm)  | Transistors
(million)  | Die size
(mm2)  | Power
(W)  | Voltage
(V)  | Cache (KiB)  | Peak floating point performance
(GFLOPS)  | Performance
int/fp [SPEC2000] (SPEC2006)  | Remarks

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L1(single core)  | L2  | L3
Data  | instruction
Godson  | 1  | 266  | MIPS-II 32-bit  | N/A  | 2001  | 1  | 180  | 22  | 71.4  | 1.0  | Unknown  | 8  | 8  | N/A  | N/A  | 0.6  | [19/25]  | [65]
FCR_SOC  | 266  | MIPS-II 32-bit  | N/A  | 2007  | 1  | 180  | Unknown  | Unknown  | Unknown  | Unknown  | 8  | 8  | N/A  | N/A  | 0.6  | Unknown  | [66][67]
2B  | 250  | MIPS-III 64-bit  | N/A  | 2003  | 1  | 180  | Unknown  | Unknown  | Unknown  | Unknown  | 32  | 32  | N/A  | N/A  | Unknown  | [52/58]  |
2C  | 450  | MIPS-III 64-bit  | N/A  | 2004  | 1  | 180  | 13.5  | 41.5  | Unknown  | Unknown  | 64  | 64  | N/A  | N/A  | Unknown  | [159/114]  |
2E  | 1000  | MIPS-III 64-bit  | GS464 (r1) (prototype)  | 2006  | 1  | 90  | 47  | 36  | 7  | 1.2  | 64  | 64  | 512  | N/A  | Unknown  | [503/503]  |
Loongson 1  | 1A  | 300  | MIPS32  | GS232  | 2010  | 1  | 130  | 22  | 71.4  | 1.0  | Unknown  | 16  | 16  | N/A  | N/A  | 0.6  | Unknown  | [36]
1B  | 266  | MIPS32  | GS232  | 2010  | 1  | 130  | 13.3  | 28  | 0.6  | Unknown  | 8  | 8  | N/A  | N/A  | Unknown  | Unknown  | [36]
1C  | 300  | MIPS32  | GS232  | 2013  | 1  | 130  | 11.1  | 28.3  | 0.5  | Unknown  | 16  | 16  | N/A  | N/A  | Unknown  | Unknown  | [36]
1C101  | 8  | MIPS32  | GS132R  | 2018  | 1  | 130  | Unknown  | Unknown  | Unknown  | Unknown  | N/A  | N/A  | N/A  | N/A  | Unknown  | Unknown  | [36]
1D  | 8  | MIPS32  | GS132  | 2014  | 1  | 130  | 1  | 6  | 3 × 10−5 | Unknown  | N/A  | N/A  | N/A  | N/A  | Unknown  | Unknown  | [36]
Loongson 2  | 2F  | 1200  | MIPS-III 64-bit  | GS464 (r1)  | 2007  | 1  | 90  | 51  | 43  | 5  | 1.2  | 64  | 64  | 512  | N/A  | 3.2  | Unknown  | [36]
2G  | 1000  | MIPS64  | GS464 (r2)  | 2012  | 1  | 65  | Unknown  | Unknown  | Unknown  | 1.15  | 64  | 64  | 4096  | N/A  | Unknown  | Unknown  | [68]
2GP  | 800  | MIPS64  | GS464 (r2)  | 2013  | 1  | 65  | 82  | 65.7  | 8  | 1.15  | 64  | 64  | 1024  | N/A  | 3.2  | Unknown  |

2H  | 1000  | MIPS64  | GS464 (r2)  | 2012  | 1  | 65  | 152  | 117  | 5  | 1.15  | 64  | 64  | 512  | N/A  | 4  | Unknown  |
2K1000  | 1000  | MIPS64 Release 2 LoongISA 1.0  | GS264E  | 2017  | 2  | 40  | 1900  | 79  | 5  | 1.1  | 32  | 32  | 256 × 2  | 1024  | 8  | Unknown  | [36]
Loongson3  | 3A1000  | 1000  | MIPS64 Release 2 LoongISA 1.0  | GS464 (r2)  | 2009  | 4  | 65  | 425  | 174.5  | 10  | 1.15  | 64  | 64  | 256 × 4  | N/A  | 16  | [568/788], (2.4/2.3)  | [36]
3B1000  | 1000  | MIPS64 Release 2 LoongISA 1.0  | GS464 (r2)  | 2010  | 4+4  | 65  | ＞ 600  | Unknown  | 20  | 1.15  | 64  | 64  | 128 × 8  | N/A  | Unknown  | Unknown  | [69]
3B1500  | 1200–1500  | MIPS64 Release 2 LoongISA 1.0  | GS464V  | 2012  | 4+4  | 32  | 1140  | 142.5  | 30(typical)
60(vector)  | 1.15–1.35  | 64  | 64  | 128 × 8  | 8192  | 150  | Unknown  | [36][70]
3A1500-I  | 800–1000  | MIPS64 Release 2 LoongISA 1.0  | GS464E  | 2015  | 4  | 40  | 621  | 202.3  | 15  | 1.15–1.25  | 64  | 64  | 256 × 4  | 4096  | 16  | (6/??)  | [36]
3A2000
3B2000
3A3000  | 1500  | MIPS64 Release 2 LoongISA 1.0  | GS464E  | 2016  | 4  | 28  | ＞ 1200  | 155.78  | 30  | 1.15–1.25  | 64  | 64  | 256 × 4  | 8192  | 24  | [1100/1700], (11/10)@Single (36/33)@Rate  | [36]
3B3000  | GS464E
3A4000  | 1800-2000  | MIPS64 Release 5

LoongISA 2.0

| GS464EV(GS464v)  | 2019  | 4  | 28  | ?  | ?  | <30 W@1.5 GHz

<40 W@1.8 GHz

<50 W@2.0 GHz[36]

| 0.95-1.25  | 64  | 64  | 256 x 4  | 8192  | 128  | (21.1/21.2)@Single (61.7/58.1)@Rate  |
3B4000
3A5000 3B5000  | 2300-2500  | LoongArch  | GS464V  | 2021  | 4  | 12 / 14  |  |  | 35w @ 2.5 GHz  |  | 64  | 64  | 256x4  | 16384  | 160  | (26.6*/??)@Single, (80*/??)@Rate *SpecInt Base point  | [36]
3C5000L  | 2200  | LoongArch  | GS464V  | 2021  | 16  | 12 / 14  |  |  | 150w @ 2.2 GHz  |  | 64  | 64  | 256x16  | 16384x4  | 560  | Unknown  | [36]
3C5000L-LL  | 2000  | LoongArch  | GS464V  | 2021  | 16  | 12 / 14  |  |  | 125w @ 2.0 GHz  |  | 64  | 64  | 256x16  | 16384x4  | 512  | Unknown
3A6000  | 2000-2500  | LoongArch  | LA664  | 2023  | 4  | 12  |  |  | 38w @ 2.5 GHz  |  | 64  | 64  | 256x4  | 16384  |  |  | [49][71]
3C6000  | 1800-2300  | LoongArch  | LA664  | 2024  | 16  | 12  |  |  |  |  |  |  |  | 32768  |  |  | [72]
3D6000  | 1600-2100  | LoongArch  | LA664  | 2024  | 32  | 12  |  |  |  |  |  |  |  | 65536  |  |  | [72]
3E6000  |  | LoongArch  | LA664  | 2024  | 64  | 12  |  |  |  |  |  |  |  | 131072  |  |  | [72]
3B6600  | 3000  | LoongArch  | LA864 + LG200  | 2025  | 8  | 7  |  |  |  |  |  |  |  | 16384  |  |  | [73][74]
3A7000  |  | LoongArch  | LA864  | 2025  | 8  | 7  |  |  |  |  |  |  |  | 16384  |  |  | [75]
3B7000  | 3500  | LoongArch  | LA864  | 2025  | 16  | 7  |  |  |  |  |  |  |  | 32768  |  |  | [73][74]
3C7000  |  | LoongArch  | LA864  | 2025  | 16  | 7  |  |  |  |  |  |  |  | 32768  |  |  | [75]
3D7000  |  | LoongArch  | LA864  | 2025  | 32  | 7  |  |  |  |  |  |  |  | 65536  |  |  | [75]
3E7000  |  | LoongArch  | LA864  | 2025  | 64  | 7  |  |  |  |  |  |  |  | 131072  |  |  | [75]

## Loongson-based systems

Lemote FuLoong and YeeLoong with a Loongson 2F microprocessor Lemote's Fulong MiniPC on top of a CD-ROM drive as reference

In 2012 it was reported that Loongson processors were found in very few computing systems.[6] The processors are mainly used in Chinese computers; in 2021 it was reported that Loongson supplies CPUs for most desktop computers procured by the Chinese government, and 80% of the Chinese government's servers.[12] The release of the 3A3000 processor in 2015 was noted as turning point for the company's fortunes.[12] In 2017 it was noted that the company's processors were being used in the BeiDou satellite.[12][8]

### Personal computers

In June 2006 at Computex'2006, YellowSheepRiver announced the Municator YSR-639,[76] a small-form-factor computer based on the 400 MHz Loongson 2.

As of November 2008[update] the new 8.9" netbook from the Chinese manufacturer Lemote that replaced mengloong, Yeeloong (Portable Dragon),[77] running Debian, is available[78] in Europe from the Dutch company Tekmote Electronics.

In January 2010, Jiangsu province planned to buy 1.5 million Loongson PCs.[79]

In September 2011, Lemote announced the Yeeloong-8133 13.3" laptop featuring 900 MHz, quad-core Loongson-3A/2GQ CPU.[80]

### Supercomputers

On 26 December 2007, China revealed its first Loongson-based supercomputer in Hefei. The KD-50-I has a reported peak performance of 1 TFLOPS, and about 350 GFLOPS measured by LINPACK.[81] This supercomputer was designed by a joint team led by Chen Guoliang at the computer science technology department of the University of Science and Technology of China (USTC) and ICT (the secondary contractor). KD-50-I is the first Chinese built supercomputer to utilize domestic Chinese CPUs, with a total of more than 336 Loongson-2F CPUs, and nodes interconnected by ethernet. The size of the computer was roughly equivalent to a household refrigerator and the cost was less than RMB800,000 (approximately US$120,000, €80,000).[82]

In 2012 it was reported that Loongson processors were to be found in the Sunway BlueLight MPP and Dawning 6000 supercomputers.[6]

## See also

* 863 Program
* Major events in computer science in China
* Semiconductor industry in China

## Notes

1. ↑ The Godson/Loongson 2 series processors have been developed and named mostly sequentially in an alphabetical format.
2. ↑ The Godson/Loongson 3 series processors seem to be named according to segment and then a generation number. The segment tends to be A (general purpose PCs), B (seemingly high core counts), and C (server processors). The generation numbers start at 1000 for the first series processors, and then increment generally to the next thousand. There are some processors that may be between generation products, that have a x5000 designation.

## References

1. ↑ "龙芯处理器英文品牌定名Loongson(组图)_业界_科技时代_新浪网". https://tech.sina.com.cn/it/2006-11-20/00141245061.shtml.
2. ↑ 2.0 2.1 Hu, Wei-Wu; Zhang, Fu-Xin; Li, Zu-Song (March 2005). "Microarchitecture of the Godson-2 Processor". Journal of Computer Science and Technology 20 (2): 243–249. doi:10.1007/s11390-005-0243-6.
3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Hu, Weiwu (August 2008). "Micro-architecture of Godson-3 multi-core processor". 2008 IEEE Hot Chips 20 Symposium (HCS). pp. 1–31. doi:10.1109/HOTCHIPS.2008.7476554. ISBN 978-1-4673-8871-9.
4. ↑ Wu, Yimian (23 May 2018). "China Supports Local Semiconductor Firms By Adding Them To Government Procurement List". China Money Network. https://www.chinamoneynetwork.com/2018/05/23/china-supports-local-semiconductor-firms-by-adding-them-to-government-procurement-list.
5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 Houweling, Elles (29 June 2021). "China-backed Loongson chip manufacturer files for IPO". Verdict. https://www.verdict.co.uk/china-backed-chip-company-files-for-shanghai-ipo/.
6. ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 Muncaster, Phil (19 December 2012). "Why China's Homemade Microchips Will Struggle to Displace Western Giants" (in en). MIT Technology Review. https://www.technologyreview.com/2012/12/19/181065/why-chinas-homemade-microchips-will-struggle-to-displace-western-giants/.
7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 Hu, Wei-Wu; Gao, Yan-Ping; Chen, Tian-Shi; Xiao, Jun-Hua (May 2011). "The Godson Processors: Its Research, Development, and Contributions". Journal of Computer Science and Technology 26 (3): 363–372. doi:10.1007/s11390-011-1139-2. https://link.springer.com/content/pdf/10.1007/s11390-011-1139-2.pdf. Retrieved 2 August 2021.
8. ↑ 8.00 8.01 8.02 8.03 8.04 8.05 8.06 8.07 8.08 8.09 8.10 8.11 8.12 Hu, Weiwu; Zhang, Yifu; Fu, Jie (January 2016). "An introduction to CPU and DSP design in China". Science China Information Sciences 59 (1): 1–8. doi:10.1007/s11432-015-5431-6. https://link.springer.com/content/pdf/10.1007/s11432-015-5431-6.pdf. Retrieved 12 August 2021.
9. ↑ Yiu, Enoch (29 June 2021). "Loongson files US$542 million IPO in Shanghai to fund chip growth" (in en). South China Morning Post. https://www.scmp.com/business/banking-finance/article/3139124/loongson-files-us542-million-ipo-star-market-chinas-home.
10. ↑ Ye, Josh (18 March 2020). "Meet the Chinese operating system that's trying to shift the country off Windows" (in en). South China Morning Post. https://www.scmp.com/abacus/tech/article/3075656/meet-chinese-operating-system-thats-trying-shift-country-windows.
11. ↑ 11.0 11.1 YINGZHE, GUO (30 June 2021). "Chinese CPU designer Loongson looks for $500m in STAR IPO". Nikkei Asia. Caixin. https://asia.nikkei.com/Spotlight/Caixin/Chinese-CPU-designer-Loongson-looks-for-500m-in-STAR-IPO.
12. ↑ 12.0 12.1 12.2 12.3 "The Loongson IPO brings out the three major technical camps of the six major Chinese core families, and how far is it to compete with the United States". iNews. 2 August 2021. https://inf.news/en/economy/6301c74130e4517a295a926d4006f725.html.
13. ↑ 13.0 13.1 Sharwood, Simon. "Chinese schools testing 10,000 locally made RISC-V-ish PCs" (in en). https://www.theregister.com/2024/04/05/china_schools_riscv_pc/.
14. ↑ 启航新征程的. "先行先试 | 近万台龙芯3A5000电脑走进鹤壁中小学课堂". http://mp.weixin.qq.com/s?__biz=MzA4Mjc1NzIyOQ==&mid=2650653947&idx=1&sn=afd53aaa9190991887a81f220860561f&chksm=8789b7f9b0fe3eef27bdcc3491f7bed3582224b931ea8e6656c5d4464a6d5ebc0010d44f9699#rd.
15. ↑ Mayersen, Isaiah (4 March 2023). "US blacklists China's Loongson as its CPUs reach maturity" (in en-US). https://www.techspot.com/news/97817-us-blacklists-china-loongson-cpus-reach-maturity.html.
16. ↑ Shilov, Anton (2023-03-03). "U.S. Govt Blacklists Chinese Tech Firms Loongson and Inspur" (in en). https://www.tomshardware.com/news/us-govt-blacklists-loongson-and-inspur.
17. ↑ China's Microprocessor Dilemma
18. ↑ "The Linley Group - China's Microprocessor Dilemma". http://www.linleygroup.com/newsletters/newsletter_detail.php?num=4264.
19. ↑ MIPS Technologies Licenses MIPS64 Architecture to STMicroelectronics
20. ↑ "Newsroom - STMicroelectronics". http://www.st.com/stonline/stappl/cms/press/news/year2007/t2154.htm.
21. ↑ Godson-3 Emulates x86
22. ↑ China's Institute of Computing Technology Licenses Industry-Standard MIPS Architectures
23. ↑ Loongson Licenses MIPS32 and MIPS64 Architectures for Embedded and Computing Applications
24. ↑ "Loongson Licenses MIPS32(R) and MIPS64(R) Architectures for Embedded and Computing Applications". https://www.bloomberg.com/apps/news?pid=newsarchive&sid=andnpz5dILv0.
25. ↑ Connatser, Matthew (2024-01-19). "Chinese chipmaker Loongson wins case over rights to MIPS architecture - company's new CPU architecture heavily resembles existing MIPS" (in en). https://www.tomshardware.com/pc-components/cpus/chinese-chipmaker-loongson-wins-case-over-rights-to-mips-architecture-companys-new-cpu-architecture-heavily-resembles-existing-mips.
26. ↑ 26.0 26.1 26.2 "Core Journey - 20 years of technical failure, is there still a chance for China's CPU?". ElectroDealPro. 14 June 2021. https://electrodealpro.com/core-journey-20-years-of-technical-failure-is-there-still-a-chance-for-chinas-cpu-_detailed-interpretation_latest-information_hot-events_36氪/.
27. ↑ 27.0 27.1 Hu, Weiwu; Wang, Jian; Gao, Xiang; Chen, Yunji; Liu, Qi; Li, Guojie (March 2009). "Godson-3: A Scalable Multicore RISC Processor with x86 Emulation". IEEE Micro 29 (2): 17–29. doi:10.1109/MM.2009.30. Bibcode: 2009IMicr..29b..17H.
28. ↑ 28.0 28.1 28.2 28.3 28.4 28.5 28.6 Morgan, Timothy Prickett (25 February 2011). "Godson: China shuns US silicon with faux x86 superchip" (in en). theregister.com. https://www.theregister.com/2011/02/25/ict_godson_3b_chip/.
29. ↑ 29.0 29.1 Tang, Yvonne (23 July 2021). "Loongson launches 3A5000, first processor to use its own LoongArch architecture". CnTechPost. https://cntechpost.com/2021/07/23/loongson-launches-3a5000-first-processor-to-use-its-own-loongarch-architecture/.
30. ↑ 30.0 30.1 30.2 30.3 "First benchmarks of China's Loongson 3A5000 CPU surface". HEXUS. 26 July 2021. https://hexus.net/tech/news/cpu/148149-first-benchmarks-chinas-loongson-3a5000-cpu-surface/.
31. ↑ Chen, Huacai. "arch: Add basic LoongArch support [LWN.net"]. https://lwn.net/Articles/861951/.
32. ↑ Aufranc, Jean-Luc (17 April 2021). "Loongson unveils LoongArch CPU instruction set architecture for processors made in China - CNX Software". CNX Software - Embedded Systems News. https://www.cnx-software.com/2021/04/17/loongson-loongarch-cpu-instruction-set-architecture/.
33. ↑ 33.0 33.1 Shilov, Anton (16 April 2021). "Loongson Technology Develops Its Own CPU Instruction Set Architecture" (in en). Tom's Hardware. https://www.tomshardware.com/news/loongson-technology-develops-its-own-cpu-instruction-set-architecture#xenforo-comments-3698897.
34. ↑ Conill, Ariadne. "Real World Technologies - Forums - Thread: LoongArch". https://www.realworldtech.com/forum/?threadid=201588&curpostid=201593.
35. ↑ 35.0 35.1 35.2 Shah, Agam (2 November 2021). "Loongson chip is China's next step to semiconductor freedom" (in en). theregister.com. https://www.theregister.com/2021/11/02/china_loongson_mips/.
36. ↑ 36.00 36.01 36.02 36.03 36.04 36.05 36.06 36.07 36.08 36.09 36.10 36.11 36.12 36.13 36.14 "IP核_龙芯官方网站-[龙芯官方网站"]. http://www.loongson.cn/product/ipcore/.
37. ↑ 37.0 37.1 37.2 37.3 37.4 Gao, Xiang; Chen, Yun-Ji; Wang, Huan-Dong; Tang, Dan; Hu, Wei-Wu (March 2010). "System Architecture of Godson-3 Multi-Core Processors". Journal of Computer Science and Technology 25 (2): 181–191. doi:10.1007/s11390-010-9315-3.
38. ↑ Fan, Bao-Xia; Yang, Liang; Wang, Jiang-Mei; Wang, Ru; Xiao, Bin; Xu, Ying; Liu, Dong; Zhao, Ji-Ye (March 2010). "Physical Implementation of the 1GHz Godson-3 Quad-Core Microprocessor". Journal of Computer Science and Technology 25 (2): 192–199. doi:10.1007/s11390-010-9316-2. https://link.springer.com/content/pdf/10.1007/s11390-010-9316-2.pdf.
39. ↑ 39.0 39.1 39.2 39.3 Weiwu Hu; Yunji Chen. GS464V: A High-performance Low-Power Processor Core with 512-bit Vector Extension. http://sourcedb.ict.cas.cn/cn/ictthesis/201103/P020110313703732094700.pdf.
40. ↑ 40.0 40.1 Wang, HuanDong; Wang, WenXiang; Wu, RuiYang; Hu, WeiWu (1 April 2015). "Design of Loongson GS464E processor architecture". Scientia Sinica Informationis 45 (4): 480–500. doi:10.1360/N112014-00292.
41. ↑ 41.0 41.1 41.2 "你不曾见过的国产CPU：可能是最全的龙芯系列芯片家谱（下）" (in Chinese). ijiwei.com. 2019-06-01. https://www.ijiwei.com/n/717789.
42. ↑ 42.0 42.1 42.2 42.3 42.4 WÁNG, ((Xuěruì "xen0n")) (3 March 2022). "The unofficial yet comprehensive FAQ for LoongArch (last updated 2022-03-06)" (in en). https://blog.xen0n.name/en/posts/tinkering/loongarch-faq/.
43. ↑ cpu-museum.de Forum: Godson-1 and 2 Microprocessor Chips, 2005-Apr-20
44. ↑ zevanzhao (2019-06-01). "你不曾见过的国产CPU：可能是最全的龙芯系列芯片家谱（上） - IT之家" (in Chinese). ithome.com. https://www.ithome.com/0/426/195.htm.
45. ↑ Shuchang, Zhou (2009). "Open64 on MIPS: porting and enhancing Open64 for Loongson II". https://www.capsl.udel.edu/conferences/open64/2009/Papers/102-Open64onMIPS2.pdf.
46. ↑ Kun, Ling (2012). "Loongcc-A Compiler based on Open64 for MIPS64 Compatible Loongson 3 Architecture". http://soft.cs.tsinghua.edu.cn/open64/open64-12-sessionII-01.pdf.
47. ↑ "China's Loongson Unveils 32-Core CPU, Reportedly 4X Faster Than Arm Chip" (in en). 2023-04-08. https://www.tomshardware.com/news/loongson-unveils-32-core-cpu.
48. ↑ 48.0 48.1 48.2 Mujtaba, Hassan (31 August 2022). "Chinese-Built Loongson 3A6000 CPUs Achieve 68% Faster Single-Core Performance, Will Be Able To Rival Zen 3 & Tiger Lake". Wccftech. https://wccftech.com/chinese-built-loongson-3a6000-cpus-achieve-68-percent-faster-single-core-performance-will-rival-amd-zen-3-intel-tiger-lake/.
49. ↑ 49.0 49.1 49.2 Sharwood, Simon (30 November 2023). "China's Loongson debuts new CPU that 'matches Intel in 2020'" (in en). theregister.com. https://www.theregister.com/2023/11/30/loongson_3a6000/?td=rt-3a.
50. ↑ "New Chinese Loongson chip matches Intel's 14600K in IPC tests, overclocked to 3 GHz with liquid nitrogen" (in en). 2023-11-28. https://www.tomshardware.com/news/loongson-launches-3a6000-cpu-matches-14600k-ipc.
51. ↑ 51.0 51.1 51.2 "Chinese chipmaker Loongson claims its 16-core 3C6000 CPU matches Intel's Ice Lake 16-core Xeon Silver 4314" (in en). 2024-07-25. https://www.tomshardware.com/pc-components/cpus/loongson-claims-its-16-core-3c6000-cpu-matches-intels-16-core-xeon-silver-4314.
52. ↑ 52.0 52.1 "China's Premiere Chipmaker Accelerates to 7nm CPU Design Despite US Sanctions" (in en). 2023-11-15. https://www.tomshardware.com/news/chinas-premiere-chipmaker-accelerates-to-7nm-cpu-despite-us-sanctions.
53. ↑ 53.0 53.1 Mujtaba, Hassan (2025-11-17). "Loongson Unveils 3D7000 CPUs: 32+ Core Chiplets, Sub-10nm, 2027 Launch" (in en-US). https://wccftech.com/loongson-32-core-chiplets-next-gen-3d7000-cpus-sub-10nm-process-2027-release/.
54. ↑ "linux-loongson/community (社区版龙芯Linux)". http://dev.lemote.com/code/linux-loongson-community.
55. ↑ 福瓏電腦WinCE 5.0 圖片
56. ↑ Fletcher, Owen (3 March 2010). "Company puts Android on laptop with China-backed chips". https://www.computerworld.com/article/2519386/company-puts-android-on-laptop-with-china-backed-chips.html.
57. ↑ "Build log for linux-2.6 (2.6.35~rc6-1~experimental.1) on mipsel". https://buildd.debian.org/status/fetch.php?&pkg=linux-2.6&ver=2.6.35~rc6-1~experimental.1&arch=mipsel&stamp=1280346533&file=log.
58. ↑ "Maxim Kuvyrkov - [MIPS[LS2][4/5] Scheduling and tuning"]. https://gcc.gnu.org/ml/gcc-patches/2008-05/msg01396.html.
59. ↑ "GCC 4.6 Release Series Changes, New Features, and Fixes". Free Software Foundation (FSF). 25 March 2011. https://gcc.gnu.org/gcc-4.6/changes.html.
60. ↑ "49611 – Need multiple errata workaround options for loongson". https://bugs.llvm.org/show_bug.cgi?id=49611.
61. ↑ "Open64 on MIPS: porting and enhancing Open64 for Loongson II". http://www.capsl.udel.edu/conferences/open64/2009/Papers/102-Open64onMIPS2.pdf.
62. ↑ "Deepin is Complete Because of You | DDUC 10th Anniversary Successfully Hosted and Witnessed by Over 200,000 Participants – Deepin Technology Community" (in en-US). https://www.deepin.org/en/dduc2020/.
63. ↑ "Loongson LoongArch supports for OpenHarmony operating system". huaweicentral.com. 11 October 2024. https://www.huaweicentral.com/loongson-loongarch-supports-for-openharmony-operating-system/.
64. ↑ Jean-Luc Aufranc (2021-07-24). "Loongson's first LoongArch processors – 3A5000 for computers, 3C5000L for servers". https://www.cnx-software.com/2021/07/24/loongsons-first-loongarch-processors-3a5000-for-computers-3c5000l-for-servers/.
65. ↑ HU Wei-Wu (2003). TANG Zhi-Min. "Architecture of the Godson-1 Processor". Chinese Journal of Computers (4). http://cjc.ict.ac.cn/eng/qwjse/view.asp?id=1229. Retrieved 19 August 2019.
66. ↑ 陈杰 (2007). 章军. "一种集成"龙芯1号"IP核的SoC的体系结构". 计算机工程与应用 (19). http://sourcedb.ict.cas.cn/cn/ictthesis/200907/P020090722610434578505.pdf. Retrieved 19 August 2019.
67. ↑ "成功研制以龙芯为内核的税控SOC芯片 苏州中科集成电路设计中心". szicc.com.cn. http://www.szicc.com.cn/sk_cgal1.asp.
68. ↑ "龙芯2G用户手册". http://mirrors.loongnix.org/doc/01user manual/loongson2g/Loongson2G processor user manualP1_V1.0.pdf.
69. ↑ "龙芯3B1000用户手册". http://mirrors.loongnix.org/doc/01user manual/loongson3b1000/Loongson3B1000 processor user manual_P1_V1.3.pdf.
70. ↑ "Bonito 3c780e Start.S (1.5Ghz@1.35v)". http://www.loongnix.org/cgit/pmon-loongson3/tree/Targets/Bonito3c780e/Bonito/start.S.
71. ↑ "LS3A6000". https://www.loongson.cn/EN/product/show?id=11.
72. ↑ 72.0 72.1 72.2 Grimm, Dallin (27 June 2024). "Chinese chipmaker samples 128 core server CPU with chiplets — Infinity Fabric-like interconnect in Loongson's 3E6000 combines four chips into one". tomshardware.com. https://www.tomshardware.com/pc-components/cpus/chinese-chipmaker-samples-128-core-chiplet-server-cpu-infinity-fabric-like-interconnect-in-loongsons-3e6000-combines-four-chips-into-one.
73. ↑ 73.0 73.1 Tyson, Mark (10 September 2024). "Chinese chipmaker teases "world-leading" performance of next-gen 7nm CPU — 3B6600 rocks eight LA864 cores clocked at 3 GHz". tomshardware.com. https://www.tomshardware.com/pc-components/cpus/chinese-chipmaker-teases-world-leading-performance-of-next-gen-7nm-cpu-3b6600-rocks-eight-la864-cores-clocked-at-3-ghz.
74. ↑ 74.0 74.1 Ashraf Shaikh, Roshan (27 April 2024). "Homegrown Chinese CPUs are catching up to AMD and Intel — Loongson 3B6600 and 3B7000 allegedly match Intel 10th Gen CPU performance". tomshardware.com. https://www.tomshardware.com/pc-components/cpus/homegrown-chinese-cpus-are-catching-up-to-amd-and-intel.
75. ↑ 75.0 75.1 75.2 75.3 Bauduin, Sven (27 June 2024). "China-CPU: Dragon Core mit 64 LA664-Prozessorkernen" (in de). pcgameshardware.de. https://www.pcgameshardware.de/CPU-CPU-154106/News/Loongson-3E600-mit-128-LA664-Prozessorkernen-1450523/.
76. ↑ "LinuxDevices article about the Municator". http://www.linuxfordevices.com/c/a/News/Chinese-150-Linux-miniPC-races-OLPC-to-market/.
77. ↑ "Yeelong Specs". http://www.linuxdevices.com/news/NS2928309621.html. (LinuxDevices, 22 Octobjer 2008)
78. ↑ Yeelong 8.9" netbook at tekmote.nl for 335.50€
79. ↑ "Soon Loongson in 1.5 million computers". http://www.chinaeconomicreview.com/china-eye/2009_09_30/Soon_Loongson_in_15_million_computers.html.
80. ↑ "Lemote Announced Yeeloong-8133 Lapto". http://www.lemote.com/products/computer/yilong/312.html.
81. ↑ KD-50-I Home page
82. ↑ "基于龙芯2号国产万亿次高性能计算机KD-50-I简介 - 硬件". http://www.cnbeta.com/articles/47215.htm.

## External links

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Electronics industry in China

Semiconductor|

* Actions Semiconductor
* Allwinner Technology
* Hejian Technology Corporation
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Mobile devices|

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Home appliances|

* Changhong
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* TCL Corporation

Electronic components|

* BOE
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* Goertek
* Royole
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* Tianma Microelectronics
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Other|

* Aigo
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Defunct|

* Asia Commercial
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* Category

* v
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MIPS microprocessors

* MIPS architecture
* MIPS architecture processors
* List of MIPS architecture processors

General
processors|

| MIPS64
compatible|

* Loongson 3 Series
* LS3A1000/LS3A1000-I(LS3A1000-i)
* LS3A2000/LS3A1500-I
* LS3A3000/LS3A3000-I(LS3A3000-i)
* LS3A4000/LS3A4000-I(LS3A4000-i)
* LS3B1000
* LS3B1500
* LS3B2000
* LS3B3000
* LS3B4000

|

Application
processors|

| MIPS32
compatible|

* Ingenic XBurst
* JZ4720
* Ben NanoNote
* JZ4730 (Skytone Alpha-400)
* JZ4740 (Dingoo A320)
* JZ4750 (Game Gadget)
* JZ4760
* Velocity Micro T103 Cruz
* Velocity Micro T301 Cruz
* JZ4770
* Ainol Novo7 Paladin
* NEOGEO-X
* GCW-Zero
* JZ4780

|

MIPS64
compatible|

* Loongson 2 Series
* LS2H
* LS2K1000/LS2K2000

Microcontrollers
(embedded device)|

| M4K|

* Microchip Technology PIC32MX

|

4Kc/4KEc|

* ATI/AMD/Broadcom Xilleon

MIPS32
compatible|

* Loongson 1 Series
* LS1A0300
* LS1B
* LS1C300
* LS1C101
* LS1D
* LS1G
* LS1H

Networking|

| 4Kc/4KEc|

* Qualcomm Atheros
* AR2313
* AR2318
* MediaTek
* RT2880
* Texas Instruments/Infineon/Lantiq
* AR7
* Lantiq
* AMAZON

|

5Kc|

* Marvell
* 88E6318 "Link Street"

24Kc/24KEc|

* Qualcomm Atheros
* AR7240
* AR7161
* AR9132
* AR9331
* MediaTek
* RT3050
* RT3052
* RT3350
* RT5350
* RT6856
* MT7620
* Lantiq
* DANUBE
* VINAX

34Kc|

* Lantiq
* AR188
* VRX288
* GRX388
* Ikanos
* Fusiv Vx175/173
* Fusiv Vx180
* Fusiv Vx185/183

74Kc|

* Qualcomm Atheros
* AR9344
* QCA9558
* MediaTek
* RT3662
* RT3883
* Broadcom
* BCM4706

1004Kc|

* MediaTek
* MT7621

1074Kc|

* Realtek
* RTL8198C

MIPS32
compatible|

* Broadcom
* various
* Cavium
* various
* Alchemy Semiconductor
* Alchemy
* RMI Corporation
* XLR

MIPS64
compatible|

* Broadcom
* various
* Cavium
* Octeon

Gaming|

| various|

* PlayStation 1 MIPS R3000A-compatible
* Nintendo 64 NEC VR4300
* PlayStation Portable R4000-based
* PlayStation 2 Emotion Engine

|

Supercomputer|

| MIPS64
compatible|

* Loongson-based systems
* LS2F/LS2F1000
* LS3A1000
* LS3B1000
* SiCortex

|

Aerospace|

| MIPS64
compatible|

* Loongson 1 Series
* LS1E0300/LS1E1000

|

MIPS32
compatible|

* Loongson 1 Series
* LS1E04
* LS1F04/LS1F0300
* LS1J

Classic
processors|

| MIPS I|

* R2000
* R3000

|

MIPS II|

* R6000

MIPS III|

* R4000
* R4400
* R4200
* R4300i
* R4600
* R4700

MIPS IV|

* R5000
* R8000
* R10000
* R12000
* R12000A
* R14000
* R14000A
* R16000
* R16000A
* R18000

MIPS V|

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Original source: https://en.wikipedia.org/wiki/Loongson. Read more

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