another happy E6600 B2 owner here. mine is running at 3.2Ghz at 1.325v for the past year. can run super pi at 3.8ghz @ 1.53v. i am still on stock heatsink, so don't want to push my luck any further. gigabyte p965 dq6 is the motherboard with F11 bios and an El Cheapo brand 1gb stick of 800mhz ddr2 ram running at 5-5-5-17.