Hello.

I'm OC'ing a setup with a friend of mine:

3200+ Venice
2*512 Corsair PC3200XL Rev. 1.2
DFI Ultra-D (newest official BIOS)
Antec 480W TB
HIS X800XL

Now, I clocked the system to 265MHz HTT*10, 2.5-3-4-5 and it's running fine in games for hours, but I get an error after three minutes in Prime95 (newest version). I'm running MemTest86+ right now, and it runned fine for 6 min in test 5.
The only thing I could think of is that the PSU is running with 20-24 pin adapter, so it isn't fed enough power. I've connected the 4 pin and floppy molex to the mobo.