Ram? BIOS. Change the secondary timings one at a time, then use Memtest (
MemTest: RAM reliability tester for Windows) to validate the change. I don't remember the max. volts on those sticks, but I'm sure Sagath with chime in.
GPU? Use eVga's Precision (
EVGA | EVGA Precision | EVGA Precision) and change as follows:
core 650
shaders 1500
mem 1100
Those are my Folding-stable clocks on the BFG and evga 260 192 SPs that are installed in my Main rig.