List of x86 manufacturers

x86-compatible processors have been designed, manufactured and sold by a number of companies, including:

x86-processors for regular PCs

• Intel
• AMD
• Zhaoxin

In the past:

• Transmeta (discontinued its x86 line)
• Rise Technology (acquired by SiS, that sold its x86 (embedded) line to DM&P)
• IDT (Centaur Technology x86 division acquired by VIA)
• Cyrix (acquired by National Semiconductor)
• National Semiconductor (sold the x86 PC designs to VIA and later the x86 embedded designs to AMD)
• NexGen (acquired by AMD)
• Chips and Technologies (acquired by Intel)
• Texas Instruments (discontinued its own x86 line)
• IBM (discontinued its own x86 line)
• UMC (discontinued its x86 line)
• NEC (discontinued its x86 line)
• VM Technology ^{[1] [2] [3]} (discontinued its x86 line)
• VIA (discontinued its x86 line)

x86-processors for embedded designs only

Auctor Maple SoC

• DM&P Electronics (continues SiS' Vortex86 line)
• ZF Micro ZFx86, ^[4] Cx486DX SoC
• RDC Semiconductors ^[5] 486SX compatible RISC core (R8610 and R8620)
• DP Kwazar SP (ДП КВАЗАР-ІС) ^[6] - As of October 2024, КР1810ВМ86 (Soviet/Ukraine 8086 clone) still appears on Kwazar's price list. ^[7]

In the past:

• ALi ^[8] / ULi ^[9] / Nvidia ^[10] - M6117C (386SX embedded microcontroller; went to ULi when ULi was spun off from ALi, then went to Nvidia when Nvidia acquired ULi)
• Auctor ^[11] / ACC Micro ^[12] - Maple SoC (Cx486DX4 ^[13] core at 100 to 133 MHz)
• Advantech - EVA-X4150 and EVA-X4300 (SoCs with 486SX-compatible processors at 150 MHz and 300 MHz, respectively) ^[14]
• Innovasic - pin-compatible 80186/80188 clones ^[15]
• Infinior - IMS16 series (Am186EM-compatible microcontrollers) ^[16]
• Vadem - VG230 and VG330 (SoCs with NEC V30 CPU cores, manufacturing continued by Amphus) ^[17]
• SiS - SiS 55x (SoCs with Rise mP6-based CPU cores; product line sold to DM&P, who rebranded it to Vortex86)
• Bandai - SPGY-1000 series (SoCs with 186-compatible NEC V30MZ CPU cores, used in the WonderSwan series of handheld game consoles) ^[18]
• VAutomation ^[19] - offered synthesizable x86 cores, in particular the Turbo 186, that has been implemented in ASICs from numerous vendors, e.g. ^[20]
  • Zoran Corporation: Vaddis 6
  • Genesis Microchip Inc: GM1601
  • Lantronix: DSTni-EX, DSTni-LX ^[21]
  • Synergetic: EC-1 ^[22]
  • Pixelworks: PW164 ^[23]
• CAST — offered synthesizable x86 and x87 IP cores for use in ASICs and FPGAs, such as the C80186XL, ^[24] C80187, ^[25] and C387L. ^[26]
• STMicroelectronics: STPC Atlas (486 core at up to 133MHz, embedded 2D graphics) ^[27]

Open source x86 cores

• ao486 ^[28] open source FPGA implementation of the 486SX (currently targets the Terasic Altera DE2-115)
• S80186 ^[29] open source 80186 compatible FPGA implementation
• Zet open source 80186 compatible FPGA implementation targeting the Xilinx ML403 and Altera DE1

x86-SoCs for mobile devices

• Rockchip (Intel SoFIA)
• Spreadtrum (Intel SoFIA)

Manufacturing-only of x86-processors designed by others

• GlobalFoundries (manufactures processors for AMD)
• IBM (manufactures processors for ZF Micro and VIA; discontinued production for NexGen and Transmeta)
• TSMC (manufactures processors for AMD and VIA; discontinued production for Transmeta)
• Fujitsu (manufactures processors for VIA; manufactured processors for Transmeta)

In the past:

• UMC (manufactured processors for Rise, SiS, ALi, ULi and Nvidia; discontinued x86 production)
• National Semiconductor (manufactured processors for ZF Micro; discontinued x86 production)
• DEC (manufactured 486 processors for AMD; discontinued x86 production) ^[30]

Manufactured and sold under its own name of x86-processors designed by others

Early Intel x86 CPU designs (up to the 80286) have in the past been second-sourced by the following manufacturers under licence from Intel: ^{[31] [32]}

Manufacturer	8086/8088	80186/80188	80286	Notes
AMD	Yes	Yes	Yes	Later developed independent x86 CPU designs.
Fujitsu	Yes	Yes	Yes
Harris Corporation	Yes	No	Yes
IBM	No	No	Yes
Intersil	Yes	No	Yes	Continued to manufacture x86 CPUs after being spun off from Harris in 1999.
Matra Harris Semiconductors (MHS)	Yes	No	No	Joint venture between Harris and Matra.
Matsushita	Yes	No	No
Mitsubishi	Yes	No	No
NEC	Yes	No	No	Later developed independent x86 CPU designs.
OKI	Yes	No	No
Renesas	Yes	No	No	Continued Intersil's 8086/8088 product line after acquiring Intersil in 2017. [33]
Rochester Electronics (REI)	Yes	Yes	Yes	Manufactures other vendors' end-of-lifed chips under licence, on a built-to-order basis.
Siemens	Yes	Yes	Yes

Manufacturers that have served as second sources for other x86 CPUs include:

Manufacturer	Second source of
Sharp	NEC V20/V30
Sony	NEC V20/V30
Zilog	NEC V20/V30
IBM	Cyrix 486, 5x86, 6x86, 6x86MX
SGS-Thomson	Cyrix 486, 5x86, 6x86
Texas Instruments	Cyrix 486
Rochester Electronics	AMD Élan SC300 [34]

Other/uncategorized

Vendor	Product Line	Description
Montage	Jintide	Pairs Intel Skylake Xeon CPU cores with specially designed I/O tracing and analysis chips to help provide improved security. Made as a multi-chip module, mainly for use in Chinese servers. [35] [36] [37]
Hygon	Dhyana	AMD/Hygon joint venture, making CPUs based on AMD Zen1 with some modifications for the Chinese market. [38]
MCST	Elbrus 2000	Russian VLIW processor family, designed to run x86 code using dynamic binary translation.
Space Electronics Inc. / Maxwell	80386DXRP	Intel 386 CPUs repackaged in special radiation-hardened packages for use in space. [39] [40]
Kombinat Mikroelektronik Erfurt	U80601	East Germany 80286 clone, made in 1989-1990.
Eagle Memories, [41] MC [42]	486DLC	OEM rebranded variants of Cyrix 486DLC CPUs.
Mitsubishi	Straker [43]	Intel SmartDie [44] based products, packaging an Intel-provided CPU die in OEM-specific packages, mainly for use in ultracompact laptops.
MicroModule Systems (MMS)	Gemini [45] [46]
Fujitsu	(Pentium) [47]
Shenzen State Microelectronics (SSMEC)	SM486DX, SM486DX2	Pin-compatible i486 clones. Functionally indistinguishable from Intel 486 processors, but draw substantially less power. [48]

See also

• List of former IA-32 compatible processor manufacturers

References

1. CBR, KAY NISHI’s VM TECHNOLOGY HAS 80386-COMPATIBLE CHIP… (May 4, 1988)
2. N. Komatsu, VM8600SP (in Japanese)
3. OASYS LX-4500 (in Japanese) - laptop using the VM867S CPU
4. http://www.zfmicro.com/zfx86.html ZFx86 486 PC-in-a-Chip
5. http://www.rdc.com.tw/ RDC Semiconductors
6. DP Kwazar SP
7. Price list of DP KWAZAR-IS from 01.10.2024
8. ALi, M6117C -- 386SX Embedded Microprocessor. Archived from the original on 4 May 1998.
9. ULi, M6117C 386SX Embedded Microcontroller. Archived from the original on 17 Apr 2004.
10. Nvidia, M6117C. Archived on 18 Apr 2025.
11. Auctor Corp, Single-Chip Maple engine for Windows CE
12. ACC Micro, Maple Processor for Embedded Control and Embedded Computing Applications
13. CPU Galaxy, "486 SBC, Benchmark & Dos Gaming on a Vintage Single Board Computer" on YouTube
14. Advantech, x86-based SoC, archived on Feb 27, 2010
15. Innovasic, Product Literature, archived on Aug 11, 2018
16. Infinior Microsystems, IMS16C Tornado 16bit Embedded Processor User’s Manual, V1.11, 11 Feb 2003. Archived from the original on 11 mar 2006.
17. Amphus Inc, System-on-a-chip products
18. WSMan rev. 7 - Bandai WonderSwan series - Technical Information, 17 Aug 2016. Archived on 8 Aug 2017.
19. VAutomation Inc, Products, archived on Oct 2, 2000
20. The CPUShack Museum, The Intel 80186 Gets Turbocharged – VAutomation Turbo186
21. GridConnect, LX-001. Archived on 18 Sep 2020.
22. Control Engineering, Synergetic launches EC-1 system-on-chip
23. PixelWorks, New PW164 Imageprocessor from Pixelworks extends family of single-chip display controllers, 16 Aug 1999. Archived from the original on 24 Feb 2001.
24. CAST, 80186XL-Compliant Chip Replacement 16-bit Microcontroller Core. Archived from the original on 10 Oct 2013.
25. CAST, C80187 Math Coprocessor Core. Archived from the original on 17 Nov 2007.
26. CAST, C387L Math Coprocessor Core. Archived from the original on 10 Oct 2013.
27. "STPC ATLAS X86 CORE PC COMPATIBLE SYSTEM-ON-CHIP FOR TERMINALS" (PDF). 2005.
28. https://opencores.org/project,ao486 ao486 at OpenCores
29. "Jamie Iles - Software + Hardware | S80186 CPU".
30. Microprocessor Report (vol.9, no.1, Jan 23, 1995), "Shift To Pentium Begins In Earnest", pg. 4
31. X86 CPU's Guide
32. CPU Galerie - Prozessoren
33. Renesas, 80C88 CMOS 8-/16-Bit Microprocessor. Accessed on Sep 3, 2023. Archived on Jan 18, 2021.
34. Rochester Electronics, Elan SC300-33KC-G
35. Ao Luo, Jintide® : A Hardware Security Enhanced Server CPU, HotChips 31, Aug 20, 2019
36. Montage, Jintide CPU. Archived on Nov 13, 2020.
37. TechRadar, Intel and AMD shouldn’t panic yet, but this Chinese vendor has repacked a Xeon CPU, May 25, 2020
38. AnandTech, Testing a Chinese x86 CPU: A Deep Dive into Zen-based Hygon Dhyana Processors, Feb 27, 2020
39. Space Electronics Inc, Radiation Hardened 80386DXRP
40. Maxwell Technologies, 80386DX Microprocessor, 32-bit, archived on Dec 5, 2008
41. The CPUShack Museum, Eagle Memories gallery
42. CPU-World, MC 80386 microprocessor family
43. x86 CPU's Guide, Mitsubishi Straker. Accessed on Sep 3, 2023. Archived on Sep 3, 2023.
44. Intel, SmartDie® products. Archived from the original on Feb 24, 1998.
45. The CPUShack Museum, CPU of the Day: MicroModule Systems Pentium Gemini, 21 Sep 2012. Archived on 2 Oct 2012.
46. Microprocessor Report, Embedded Pentium Comes on Board, 23 June 1997.
47. x86 CPU's Guide, Fujitsu Pentium 133. Accessed on Sep 3, 2023. Archived on Feb 8, 2023.
48. x86.fr, Investigating SSMEC’s (State Micro) 486s with the UCA, 25 Jun 2024. Archived on 14 Dec 2024.