Well I've had this thing for about 6 years now, still running strong; but I know this laptop uses the lga775 socket for the processor, yet from what the company tells me is that I can only use 3 types of processor for the socket: Intel Core 2 Duo E6400, E6700, and the Extreme X6800. Now I know these aren't the only processors that will fit in there, but as far as I can tell it has something to do with the voltage and it being a P965 Chipset. Now my current voltage for my E6700 is 1.163 V. At least thats what its saying for CPU-Z. The Intel Core 2 Duo Wolfdale E8600 shows 0.85–1.3625 V. I am wondering if I would have to lower the voltage somehow if that is possible?