From the research that I have done, the P6T X58 or P6T Deluxe are quite good for OC. As long as you have ample cooling you should be fine. Like the theAnimal said, you will need to tinker a bit to find the "sweet spot" for you CPU. Intel reccommends a maximum of 1.65V for that processor, but from what i have heard from other tech-type sites they say don't exceed 1.25V. I have seen several i7 920s at 4Ghz to 4.2GHz. Its a matter of finding where your mobo posts then boots your OS without crashing and having your computer not sweating.