I tried different rails. It is a 450 watt Enermax psu. I have a friend running two 6800 ultras in sli with the same psu. I thought 7800 gtx's consumed half the power 6800's did. All the 3dmarks run flawlessly as well. Except for 2000, which will not run. I don't get it. I tried Medal of Honor...
I just installed an Albatron K8SLI motherboard, and 2 Leadtek 7800 GTX's. I formatted and installed Win XP Pro, installed all the latest drivers. Here are some system specs:
Albatron K8SLI
Athlon 4400+
1GB Kingston HyperX pc3200
2 Leadtek 7800GTX Forceware 78.01 driver
AC 97 integrated...