OK. So I have had the Intel 975XBX2 motherboard since early this year and although it is not the best overclocker, it has served me well and therefore I would like to continue using it. I used to own a Core 2 Duo E6600 which I was able to get a stable overclock of 3150GHz on core voltage. I recently picked up a Core 2 Quad Q6600 G0 and the bottleneck for me is about the same....3150MHz. I have good memory, good power supply, the best heatsink/fan (ultra 120 or something). My CPU when running at 3150MHz never tops 47 degrees C when running Prime95. So far, I have run everything at stock voltage but now I am wondering if I should start changing the voltages. Can anyone who has gotten a great overclock out of their Intel 975BX2 please provide me with your motherboard overclocking settings including voltages you have changed? CPU? FSB? etc.. Thank you. If I am missing any information, please let me know. I have set the reference frequency to 266MHz, memory frequency 533MHz, Enhanced Power Slope is enabled and of course, the Watchdog is disabled. Oh, and finally I am running the latest motherboard BIOS from Intel.