page_title: Cyrix
section_title: Cyrix FasMath coprocessors
hierarchical_section_title: Cyrix / Products / Cyrix FasMath coprocessors
caption_attribution_description: English: FPU Cyrix FasMath CX-83D87
context_page_description: Cyrix Corporation was a microprocessor developer that was founded in 1988 in Richardson, Texas, as a specialist supplier of math coprocessors for 286 and 386 microprocessors. The company was founded by Tom Brightman and Jerry Rogers. Cyrix founder, president, and CEO Jerry Rogers aggressively recruited engineers and pushed them, eventually assembling a design team of 30 people.
  Cyrix merged with National Semiconductor on November 11, 1997.
context_section_description: The first Cyrix product for the personal computer market was a x87 compatible FPU coprocessor. The Cyrix FasMath 83D87 and 83S87 were introduced in 1989. The FasMath provided up to 50% more performance than the Intel 80387. Cyrix FasMath 82S87, a 80287-compatible chip, was developed from the Cyrix 83D87 and has been available since 1991.
caption: Cyrix FasMath
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