What is the point of having a i5 4670k or 3570k or any of the 200-300-400$ model cpu which will just only provide 2-5 fps more than lets say a phenom II 6 cores oc'ed a bit like to 3.7ghz or 3.8ghz paired with a gtx 780,you'll save around 300$ on the cpu and the motherboard itself and you can even get a better gpu with that money if u feel like,isn't gpu the heart of a gaming rig and since a phenom II 6 cores oc'ed to that clock won't bottleneck anything whats the point of spending so much money on cpu.I see people advising to get such high end cpu while I wonder is the 300$ that I invest in cpu+motherboard really worth the 5-7 fps I'm getting? or should I just invest it in a better gpu like from a gtx 760 to 780ti ^^