I am running a P3V4X, 650 cB0@866, default 1.65v. THe system is very stable with the exception of my crappy IDE 4 gig hard disk. There is a memory fix for the VIA boards that will make the memory alot faster, not AS fast as a BX board but it makes up alot of ground. Before I used WPCREDIT to enable 4-way interleaving with my memory set to 2-2-2-5 I got scores of 300/350, after the fix I got scores of 380/440, a huge performance difference. The only problem is that you have to tweak the board to get the memory fast, the BX boards are fast as hell out of the box. Good luck, but I must let you know that if you get a p3v4x you will not regret it. Oh yeah and I am running win 98SE and I have to reboot b/c of freezing or blue screens less than my p2 233 gateway...go figure
Chris