Wow, that GTX 260 must be seriously bottle-necked.

So my dad's office PC has a GigaByte GA-8I945G Pro Motherboard in it with a Pentium 4 630 HT 3.00GHz as the CPU. Since the socket is LGA775, is it possible to pair a Core 2 Duo processor with it? On the motherboard box it says "Optimized for Intel Pentium D/Pentium 4 Processor." I know I can use a Celeron on it but I'm not sure if anything newer than a Pentium D will be compatible with the chipset. I've tried looking this up but haven't found any solid answers. Anyone has some answers for me?