ASUS seems to routinely overvolt their boards, usually by .03-.05 volts. And some of their boards, like mine, allow for significant variability of the CPU voltage.
P4-2.0@2.66
ASUS P4S533
512MB Mushkin PC3000
Modded Promise RAID 0 with IBM 75GXP x2 (yeah, I know)
Matrox G400 DH (no gaming)
Pioneer DVD 116
ASUS 32x12x40x
On board NIC
On board sound (not quite as good as SB Live 5.1, good enough)
Visioneer 7700 (couldn't resist the memory card reader)
Antec True Power 480