# 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 (discontinued its x86 line)
* VIA (discontinued its x86 line)

## x86-processors for embedded designs only

* DM&P Electronics (continues SiS' Vortex86 line)
* ZF Micro ZFx86, Cx486DX SoC
* RDC Semiconductors 486SX compatible RISC core (R8610 and R8620)
* DP Kwazar SP (ДП КВАЗАР-ІС) - As of December 2021, КР1810ВМ86 (Soviet 8086 clone) still appears on Kwazar's price list.
In the past:
* ALi (x86 products went to Nvidia through the ULi sale)
* Nvidia (M6117C - 386SX embedded microcontroller)
* Auctor / ACC Micro - Maple SoC (Cx486DX4 core at 100 to 133 MHz)
* Advantech - EVA-X4150 and EVA-X4300 (SoCs with 486SX-compatible processors at 150 MHz and 300 MHz, respectively)
* Innovasic - pin-compatible 80186/80188 clones
* Vadem - VG230 and VG330 (SoCs with NEC V30 CPU cores, manufacturing continued by Amphus)
* SiS (sold its Vortex86 line to DM&P)
* Intersil (x86 line, that is up to 80286 compatible, discontinued)
* VAutomation - offered synthesizable x86 cores, in particular the Turbo 186, that has been implemented in ASICs from numerous vendors, e.g.
** Zoran Corporation: Vaddis 6
** Genesis Microchip Inc: GM1601
** Lantronix: DSTni-EX, DSTni-LX
** Synergetic: EC-1
* CAST — offered synthesizable x86 and x87 IP cores for use in ASICs and FPGAs, such as the C80186XL, C80187, and C387L.

## Open source x86 cores

* ao486 open source FPGA implementation of the 486SX (currently targets the Terasic Altera DE2-115)
* S80186 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)

## 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:
| 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. |
| 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 |

## 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. |
| Hygon | Dhyana | AMD/Hygon joint venture, making CPUs based on AMD Zen1 with some modifications for the Chinese market. |
| 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. |
| Kombinat Mikroelektronik Erfurt | U80601 | East Germany 80286 clone, made in 1989-1990. |
| Eagle Memories, MC | 486DLC | OEM rebranded variants of Cyrix 486DLC CPUs. |
| Mitsubishi | Straker | Intel SmartDie based products, packaging an Intel-provided CPU die in OEM-specific packages, mainly for use in ultracompact laptops. |
| Fujitsu | (Pentium) | Intel SmartDie based products, packaging an Intel-provided CPU die in OEM-specific packages, mainly for use in ultracompact laptops. |
| Shenzen State Microelectronics (SSMEC) | SM486DX, SM486DX2 | Pin-compatible i486 clones. Functionally indistinguishable from Intel 486 processors, but draw substantially less power. |