7850 and 7870 need at least a 500W 80+ bronze certified psu :) the rest of the build looks good.
maybe its an idea to chance the motherboard to a motherboard with a 970 chipset, with eye to the future, cause 970 chipset boards have some usb 3.0 and sata 6 if thats matters to you. and you.the price diffrent isnt that big.
7850 is a good gpu. i dont know if the card can play crysis 3 maxed out at 1080p.
ive got crysis on my pc but not install it yet, maybe i can do it tonight, ive got a 7870 card.
and a FX8350 with that in Metro2033 also a nice game i get wit the settings maxed out at 1680 x 1050 resolution, on DX9 setting i get about 87 to 90 fps,somethimes 100.
if i chance the setting to DX11 i dont know whats diffrent in this, but then i get about 40/50 fps
Yeah if you can afford it, I'd go with the FX8350 if you're going to be primarily playing Crysis 3. You can pick them up right now for around $180. It's a little more money, but it'll be worth it in the long run since games are starting to be optimized for multiple cores (the 8350 has 8 cores).