- Are PIII/Athlons "slowdown" friendly (cache, downclock)? It depends on what "Athlon" you're talking about. On first Athlons for socket A (Thunderbird core, up to 1,4 GHz) you can re-connect L1 bridges (pencil mod - http://fab51.com/cpu/barton/athlon-e23.html#L1) and use BIOS/Dip switches/jumpers …

I remember playing Half Life back then in 1998 on my Celly 266, PCChips with Ali chipset and Voodoo Rush 6 MB. Performance was okay (15-25 fps) when there was not much action on screen. But later in game when more enemies attacked you at once or during explosions framerate often dropped under 10 fps …

Try Screamer Rally - that was my favorite game from "early 3dfx era". It should work really good on your machine (friend of mine played it on P100 or P120 with Voodoo Rush).