I'm running Celeron 466 in an Asus P3V4X, (did have dual till damn BP6 died.). With 256 PC100 (Which I will switch to PC133 cas 2 ram), Geforce DDR (Changing to 64Mb Radeon), Adaptec 2940U2W, 2 18 Gb Seagate Cheetahs and SB Live.
I am willing to change motherboard, but at moment P3 looks a better option.