I'm looking to build a gaming computer so I can play Diablo 3. I've picked out the parts but I haven't bought them yet. I'd like to know if this is a powerful build, if the parts would work well together and if there are any room for improvements. I want to stay in the $700-800 budget.
6850 is fine for diablo3 since it doesn't require powerful hardware it can run
over 40 fps at 2560x1600 which and over 65 fps at 1080p, so it will be fine for that but if you'd like to play other games as well might want to check out a 6870 for a bit more power.
8/10- motherboard is a bit on the high end for your platform but i love it, i built a few for computers recently for friends all with asrock extreme 3 gen 3, its something about it that makes me warm inside :3