AMD Am486 & Am5x86

Am386 ◄ Am486/5x86 ► K5


AMD Am486 & Am5x86 © Advanced Micro Devices
AMD Am486 & Am5x86 © Advanced Micro Devices

The Am486 is a 80486-class family of computer processors that was produced by AMD in the 1990s. Intel beat AMD to market by nearly four years, but AMD priced its 40 MHz 486 at or below Intel's price for a 33 MHz chip, offering about 20% better performance for the same price. While competing 486 chips, such as those from Cyrix, benchmarked lower than the equivalent Intel chip, AMD's 486 matched Intel's performance on a clock-for-clock basis.

AMD's higher clocked 486 chips provided superior performance to many of the early Pentium chips, especially the 60 and 66 MHz launch products.

 

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AMD Am486 DX

AMD Am486 DX-40

AMD Am486 DX-40
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AMD Am486 DX2

AMD Am486 DX2-66

AMD Am486 DX2 Die Picture by Pauli Rautakorpi - Published under the Creative Commons Attribution 3.0 Unported license. Slightly edited by HARDWARECOP.

A80486DX2-66
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AMD Am486 DX2-80

AMD Am486 DX2-80 (the exact CPU!!) Die Picture by Pauli Rautakorpi - Published under the Creative Commons Attribution 3.0 Unported license. Slightly edited by HARDWARECOP.

A80486DX2-80
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A80486DX2-80 V8T
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AMD Am486 SX2

AMD Am486 SX2-66

A80486SX2-66
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AMD Am486 DX4

AMD Am486 DX4-100

AMD Am486 DX4-100 (the exact CPU!!) Die Picture by Pauli Rautakorpi - Published under the Creative Commons Attribution 3.0 Unported license. Slightly edited by HARDWARECOP.

A80486DX4-100NV8T
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A80486DX4-100SV8B
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AMD Am486 DX4-120

AMD Am486 DX4-120 (SV8B) Die Picture by Pauli Rautakorpi - Published under the Creative Commons Attribution 3.0 Unported license. Slightly edited by HARDWARECOP.

A80486DX4-120SV8B kindly donated by Pauli Rautakorpi.

A80486DX4-120NV8T
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A80486DX4-120SV8B
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AMD Am5x86

The AMD Am5x86 was one of the fastest, and most universally compatible upgrade paths for users of 486 systems. Introduced in November 1995, the Am5x86 is an Enhanced Am486 processor with an internally set multiplier of 4, allowing it to run at 133 MHz on systems without official support for clock-multiplied DX2 or DX4 486 processors.

AMD Am5x86-P75

CPU-Z:

CPU die:

AMD 5x86-P75 (the exact!! CPU) Die Picture by Pauli Rautakorpi - Published under the Creative Commons Attribution 3.0 Unported license. Slightly edited by HARDWARECOP.

AMD-X5-133ADW
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Unlisted models:

 

  • Am486 DX: 25 MHz, 33 MHz
  • Am486 DE2: 66 MHz
  • Am486 SX: 33 MHz, 40 MHz
  • Am486 DX2: 50 MHz
  • Am486 SX2: 50 MHz
  • Am486 DX4: 75 MHz, 90 MHz
  • Enhanced Am486 DX2: 66 MHz, 80 MHz
  • Enhanced Am486 DX4: 75 MHz
  • Am5x86: 150 MHz, 160 MHz

 

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