Your graphics card I would get something like a 7870 or if you have the money get a gtx 670 as hey are great for the price. Max out crysis 2 with 1920x1200 res.
For you CPU if you want to overclocked go with 2nd gen. Although if you of is for gaming I'd get i5 3570k but if you're doing other things get a i7 2600k but don't get ivy there is isn't much better about them.
For psu I'd get a decent 750w corsair power supply or cooler master as they are cheaper but don't go for an un branded one.
For the case I'd go with cooler master although antec cases are also good. I always recommend the cooler master haf 912 plus.
Get a z77 motherboard. Asus or gigabyte they are both ok Brands.