AMD Am486 DX4/100

An Am486DX4/100 NV8T with an early 1995 date-code. I believe it's a fairly early Am486 100MHz part. Most of these CPU's are made after summer 1995. AMD did manufacture the Am486 for a long time: I also have a 16KB cache CPU from 2001.

This particular model is the, I believe most common, NV8T. The NV8T and SV8B feature 2x and 3x multipliers and the SV16B has 3x and 4x multipliers. The number (8 and 16) stands for the amount of L1-cache. The S-models have write-back cache which is faster compared to write-through.

Earlier models can have the V8T-marking (without N). These versions are the so called 'No ICE' CPU's. Intel allowed AMD to copy 286 and 386 CPU's to sell them as Am286 and Am386. The 486, however, was not allowed to copy so AMD had to remove Intel's in-circuit emulation (ICE) microcode.

A similar processor has been benchmarked! Click here to see this processor and the benchmarks.