I also didn't noticed any improvements with 8.1. I've benchmarked my sytem with DirectX 8 and 8.1 and the scores of 3DMark2001 are the same (both around 4650). I've a 1,4 GHz AMD Athlon, 512 MB DDR PC2100 RAM and a Geforce 2 MX card OC'ed (GPU from 175 to 220 and Mem from 166 to 205). I use Win98.
I wished I had a GeForce 3
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