Here's a slightly better build, for a bit cheaper:PCPartPicker part list
/ CPU: Intel Core i5-3470 3.2GHz Quad-Core Processor
($149.99 @ Microcenter) Motherboard: ASRock B75 PRO3-M Micro ATX LGA1155 Motherboard
($76.98 @ SuperBiiz) Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory
($47.99 @ Amazon) CL9 instead of the CL11 stuff you had before.Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive
($67.99 @ Microcenter) Video Card: MSI Radeon HD 7870 GHz Edition 2GB Video Card
($209.99 @ Microcenter) (an 7870 XT is another, better option if you don't mind a slight increase of maybe $30 in price).Case: Rosewill RANGER-M MicroATX Mini Tower Case
($34.99 @ Newegg) Power Supply: Corsair Builder 500W 80 PLUS Certified ATX12V Power Supply
($49.99 @ Newegg) Optical Drive: Samsung SH-224BB DVD/CD Writer
($15.99 @ Newegg) Total:
RAM is both faster and cheaper due to a discount. Also not ugly and green.
7870 is a Ghz edition, not just a standard one, and it's again cheaper due to a discount.
Power supply is the same as the one before, except it's a V2 since it can be had for the same price.
In regards to performance, at 1080p pretty much everything will be on high/ultra with no issues. For lower resolutions you won't even be breaking a sweat.