On the CPU, there's practically no difference between the i5 and i7 for gaming. For the motherboard, the Gigabyte OC is a really nice board (one of the best), but there are cheaper options if you want to cut the spend by about £30-40. Graphics - 2x7950 will give out oustanding performance, and a single one overclocked isn't very far off a GTX 770 anyway.

