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Corporate information |
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Cyrix began in 1988 as a specialist manufacturer of high-performance maths co-processors for 286 and 386 systems. The company was founded by
ex-Texas Instruments staff.
Cyrix had always been a fabless manufacturer. In the early days they used Texas Instruments and SGS Thomson production
facilities. In 1994, Cyrix turned to IBM Microelectronics.
Cyrix produced their own design CPUs such as 486 class processors (with partly Pentium technology and 486 pinout called 5x86) and Pentium Pro class CPUs with Pentium
pinout (6x86) using a RISC core with x86 translation. 6x86s were known to have slow FPUs though.
Unlike AMD, Cyrix had never manufactured or sold Intel designs under license, but
designed everything in-house, from the ground up.
In August 1997 Cyrix merged with
National Semiconductor.
In June 1999, VIA bought what was left from Cyrix. By this time the original development team was no more, the products were hopelessly out of date, and the only
thing left of value was the Cyrix name.
http://www.viatech.com
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| add/correct Cyrix info |
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96 Cyrix chips in collection: |
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| Cx486 DLC |
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Cx486DLC-33GP black |
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Cx486DLC-33GP |
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Cx486DLC-33GP OEM |
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Cx486DLC-33GP OEM |
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Cx486DLC-40GP |
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| Cx486 SLC |
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Cx486SLC/e-V25MP |
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Cx486SLC/e-33MP |
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| Cx486 DRx |
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Cx486DRx²25/50GP |
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Cx486DRx²33/66GP |
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| Cx486 DX |
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Cx486DX-33GP |
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Cx486DX-V33QP |
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Cx486DX-40GP |
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Cx486DX-40 w/ Cooler, old Logo |
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Cx486DX-40 w/ Cooler, newer Logo |
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Cx486DX-40 w/ Cooler, new Logo |
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Cx486DX2-50GP |
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Cx486DX2-50 w/ Cooler |
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Cx486DX2-50 w/ Cooler, 'Write-Back' |
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Cx486DX2-66GP |
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Cx486DX2-66GP ("Cooling Fan Required") |
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Cx486DX2-V66GP |
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Cx486DX2-V66GP 3.45V |
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Cx486DX2-66 w/ Cooler |
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Cx486DX2-V80GP 4.0V |
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Cx486DX2-V80GP 3.45V |
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Cx486DX2-80 w/ Cooler |
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Cx486DX4-100GP |
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Cx486DX4-100GP4 |
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| Cx486 S |
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Cx486S-33GP |
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Cx486S-40 w/ Cooler |
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Cx486S-40GP |
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| 5x86 |
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5x86-100GP w/ Cooler |
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5x86-100GP (026-3.6V) |
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5x86-100GP (030-3.45V) |
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5x86-100QP |
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5x86-120GP |
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| 6x86 |
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6x86-P150+GP |
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6x86-P150+GP, no Voltage Markings |
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6x86-P150+GP w/ Capacitors |
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6x86-P166+GP 3.53V |
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6x86-P166+GP |
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6x86-PR166+GP |
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6x86L-P150+GP |
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6x86L-PR166+GP |
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6x86L-PR200+GP |
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6x86L-PR200+GP, Variant |
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| 6x86MX |
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6x86MX-PR166 |
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6x86MX-PR200, 75 MHz Bus |
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6x86MX-PR200, 66 MHz Bus |
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6x86MX-PR233 |
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| M II |
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M II-233GP, 66 MHz Bus, Dark |
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M II-266GP, 66 MHz Bus |
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M II-300GP, 66 MHz Bus |
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M II-300GP, 66 MHz Bus, Dark |
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M II-300GP, 75 MHz Bus |
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M II-333GP, 66 MHz Bus, Silver |
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M II-333GP, 75 MHz Bus |
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M II-333GP, 83 MHz Bus, Engineering Sample |
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M II-366GP, 100 MHz Bus |
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M II-400GP, 95 MHz Bus |
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| MediaGX |
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Gx86 GX-133BP |
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MediaGX GX-120BP |
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MediaGX GX-133BP |
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MediaGX GX-150BP |
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MediaGX GXI-166BP |
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MediaGX GXI-180BP |
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MediaGX GXI-180BP (silver) |
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MediaGX GXm-233BP |
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MediaGX GXm-266BP |
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MediaGX GXm-180GP |
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MediaGX GXm-200GP |
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MediaGX GXm-200GP 85C |
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MediaGX GXm-233GP |
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MediaGX GXm-266GP |
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| FPU |
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FasMath CX-82S87-NP-SV |
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387DX-33 |
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FasMath CX-83D87-20-GP-XA |
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FasMath CX-83D87-25 GP |
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FasMath CX-83D87-25-GP-KN |
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FasMath CX-83D87-25-GP-XA |
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FasMath CX-83D87-33 GP |
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FasMath CX-83D87-33-GP, black |
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FasMath CX-83D87-33-GP-KN |
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FasMath CX-83D87-40-GP |
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387DX+ |
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FasMath CX-83S87-16-JP |
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FasMath CX-83S87-16-KP |
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FasMath CX-83S87-20-JP |
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FasMath CX-83S87-20-KP |
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FasMath CX-83S87-25-JP |
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FasMath CX-83S87-33-JP |
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Cx487DLC-33GP |
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Cx87DLC-33QP |
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Cx87DLC-40QP |
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Cx487S-33QP |
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Cx487S-40QP |
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