Intel - i486 SX 33 

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Intel - i486 SX 33

33

Computer parts, Parts & systems for computing

Micro engine, Microprocesseur / Microprocessor / Mikroprozessor, Socket PGA 168

The Intel 80486 ("eighty-four-eighty-six") (Marketed i486, spoken as Intel 486) was a higher performance follow-up to the Intel 80386 microprocessor. Introduced in 1989, it was the first tightly[1] 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. It represents a fourth generation of binary compatible CPUs since the original 8086 of 1978. A 50 MHz 80486 executed around 40 million instructions per second on average and was able to reach 50 MIPS peak performance. The i486 was without the usual 80-prefix because of a court ruling that prohibited trademarking numbers (such as 80486). Later, with the introduction of the Pentium brand, Intel began branding its chips with words rather than numbers. Contents