Intel i486 Processor

 
  • A computer processor developed by Intel as an upgrade to the 386 processor series and commonly referred to as the 486 or i486. The 80486 has 8k of memory cache built into the processor with 32-bit databus architecture and was available in clock rates ranging from 20MHz to 33MHz. The 486 was available as either a DX or SX, the DX features a built-in coprocessor, the SX does not. A 486SX2 was also available and was capable of doubling the speed. 
  • The 486 was introduced in 1989 and was the first tightly pipelined x86 design as well as the first x86 chip to use more than a million transistors, due to a large on-chip cache and an integrated floating-point unit.

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