Useful thread and helped with my build.
Spec as follows:
HARDWARE:
mobo A8N32SLI
cpu Opteron 146 CABNE @ 290 x 10 - 1.57v - 47degrees under load - Arctic Cooler Freezer 64 Pro
memory 2 X 1gb Gskill F1-4000USU2-2GBHZ
hard drive(s) 1 X 120gb Seagate Barracuda
graphics card 1 X 6800GS @ Core...