P965. But i can tell you that he is running very high vMCH. He is running 530FSB. If you want to run that, you will need some good RAM too, that'll run DDR2-1100. ASUS P5B Deluxe with some nice Micron D9GMH will be a good deal. Now, why don't you just buy the motherboard and cpu from him? Since the memory controller is on the motherboard, it would be ideal for you to get them both.