Gaxe :
Ok so here's my base build, i5-4670k (originally i5-3570k, but I found a good deal on Newegg for the 4670k), Radeon HD 7950 Vapor-X, 600w PSU 80+ Bronze, Z86-G45 Motherboard (Was Z77 Extreme4 but again found a bundle with it with the Haswell). This thread is more about Bang for the Buck though, wouldn't the Phenom II x4 965 be better money wise than a Ivy Bridge/Haswell?
Not really. With the graphics card you are buying, you will be better off with an Intel CPU.
You will be able to use your 4670K without seeing bottlenecks, lag and micro-stutters longer than you could with AMD.
Another point would be, if you find a cheap 7950 next year or when you feel like you need it, you can put them in Crossfire. Well, AMD CPUs can't keep up with that. There will be a noticeable frame inconsistency (frames are not timed evenly between each other).
That's why you won't see people recommending an AMD CPU for a high end build. They are still good for the low/mid range though, since you won't really expect people to do SLI/Crossfire there.
Again, overall, you can't go wrong with the 4670K. You are guaranteed to be able to use the platform for the next 5+ years with a mild overclock and be able to use high end card without bottlenecks for a few more years.