From what I have read, there is no need for an i7 for gaming performance. Beyond an i5, there is very little gain, and the graphics card become the deciding factor, so I actually think that is the right CPU to choose
I am building one myself, but haven't fully decided on the build
Motherboard - a z77 one
CPU - i5-3570k
GPU - 670
RAM - 8 GB (Corsair maybe?)
Storage - HDD + SSD combo
PSU - about 650W, but enough headroom for a 2nd card
Case - Sharkoon Tauron
Any advice would be welcome







