I feel your pain! I finally got my Q6600 @3.6 400x9 800ddr 1.575v Prime95 to remain stable for 24 hours using Blend. I previously thought I had it stable with 1.45v using small FFTs but then I noticed your conversation concerning the best way to determine stability and found that using Blend it failed around 7 hours.

CPU Core: 1.575 Idle: 1.52 Load: ~1.46-1.48
CPU FSB: 1.3
nForce SPP: 1.5
nFourc MCP: 1.5
HT nForce SPP <-> MCP: 1.3

I tried a CPU Core of 1.55v but that failed. I'm not sure I can go any higher.

I haven't yet had a game cause a frozen screen.

GAR, would you recommend th 4GB G.Skill PC8000 memory that's in your signature and is it the G.Skill F2-8000CL5D-4GBPQ (2GB x 2) EPP Ready.

I'm looking for a good 4GB memory set and another 8800GT to match the one that I have.