Alright, my friend has asked me for suggestions on what to build. His budget is around $700 and will go up to $800 if need be to get a noticeable boost. I had a quick look and the main thing I keep arriving at is the Radeon HD 7870 graphics card, by no means does this absolutely have to be included in the build but from what I've read it is very good for this type of price range. He hasn't been very specific but I can assume he will be playing high end games such as bf3 and Bioshock Infinite, looking for maybe 60ish fps at 1080p medium to high settings. Greatly appreciate any answers, thanks!