Ok, first off, I have a 650w power supply with 4 12v rails so power is not a prob, I have a gtx 260 cuz the games i run are primarily built on nvidia. And I have the case and cooling taken care of as well as drives both dvd burner and sata 2 640gb drive. Right now, i am looking to upgrade my processor/mb/memory and I need something around 300-350$ I need something that won't bottleneck my video card and FYI, i do not plan to use sli. all suggestions are welcome. thanks!