Dtignor :
Will the non-k series bottleneck any gpu?
The 4570 is very nearly identical to the 4670K apart from clock speeds.
Also, the reason why I said 700W will be overkill was that even if you toss a 290X or 690 in there, a 550-600W PSU will still be enough. Only a 7990 (which isn't great) would push close to 700W. CPU/Mobo upgrades are negligible power increases (a dozen watts or so).
It's not a bad card, it's just that your money would be better spent on a GPU. Overclocking CPUs is generally just for fun and benching. Unless you're doing heavily CPU-bound tasks, a couple hundred MHz won't make much of a difference.
Maths:
4670K ($200) + H60 ($60) = $260
4570 ($160) + 212+ ($30) = $190
Savings: $70
760 ($250) + $70 = 770 ($320)
PS: Try not to double post.