So I currently have 2 r9 290's and an i5 3570k @ 4.6. Do I need to go to the i7 because at the moment as far as gaming goes I don't notice any real issues I'm hitting 60fps at 1440p although I'm sure if I ran benchmarks I'd see the bottleneck. If I don't need the upgrade then I will probably grab a new psu and case and tidy it all up a bit.