Hello, as the title states, I'd like to upgrade the CPU in my Early 2008 Mac Pro. Currently I'm running 2 Quad-Core Intel Xeon 2.6 GHz Processors, and I'd like to upgrade to something more suitable for gaming. I'm not very experienced in building/upgrading computers beyond RAM and Internal Hard drives so I'll be having a friend who's experienced with building computers running Windows helping me. Just looking for some suggestions on which Processors you'd recommend. I'm looking in the $40-80 range but willing to budge a little if it would make a big difference. Thanks for your help.