Cx486DX
The Cyrix Cx486 was an x86 microprocessor designed by Cyrix. It primarily competed with the Intel 486 with which it was software compatible, would operate in the same motherboards provided proper support by the BIOS was available and generally showed comparable performance. The chip also competed with parts from AMD and UMC. Production Due to Cyrix being a fabless company, Cyrix used Texas Instruments, SGS Thomson and IBM which had their own foundries to manufacture their processors, though this was done under a contract that allowed each company to build and sell Cyrix-designed processors under their own branding. As a result, there were many versions of the Cx486 and the manufacture of them differed slightly depending on which company had built them, though equivalent chips generally perform near-identically enough that the end user would not notice any difference between them. The contract with SGS-Thomson outlived the Cyrix Cx486 processor's lifespan in the mainstream mark ...
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