I see you guys are talking about GPU, and I've been trying to get the PCIe-frequency over 100 with a GTX 295.

I could never boot with PCIe>100 with my good old CO, but now (with w3520) i can get into W7 with PCIe=105. This requires almost no tweaks and my desktop-applications seams to be running fine with no problems, but my display freezes (and sound loops) a few minutes into Crysis (even with GPU down clocked to stock). I have tried to give a bit more juice to SB by raising the following Voltage:

IOH/ICH 1.1V Voltage: 1.21v
IOH Analog Voltage: 1.20v
ICH 1.5 Voltage: 1.7v

but the problem remains. I hear that this can be a GTX 295/SLI-issue. Any advise what else could help to stabilize high PCIe-frequencies on a multi-GPU/SLI-setup?