Ok, since I recently built my new system, I decided to post new thread
So, 100% stable clocks, tested with everest stability test for 12h.
Q6600 overclocked to 3.3Ghz @ 1.425v
OCZ Technology 2x2GB PC6400 overclocked to 900mhz @ 2.2v
GeForce 8800GTS 512 overclocked to 800/1900/1000 - stock voltages.
Ok, I'm now going to run the 3D benchmark! Will update soon...