I have a ASUS p5n-d motherboard and a nvidia gtx 460 1g and Intel 2.6 GHz quad core CPU. With a 1Tb hard drive and 8 gigs of ram. Its an alienware set up I paid way to much for about 4 years ago. I already bought a gtx780 classified and a 850w corsair power supply just in case my old one couldn't hack it. They will be here tomorrow. Question is...should I even bother with upgrading the cpu? Which also requires a new mobo and memory because my old stuff is ddr2. If so can i get some recommendations for the motherboard. This is strictly a gaming rig and is hooked up to my dolby digital receiver. So the capability to produce surround sound in games is a must.