Opinions on this cheap gaming build?

What do you guys think about this build for gaming? I plan on playing World of Warcraft
and League of Legends. I will most likely be using skype while playing these. I might also try a few modern games such as Call of Duty but I don't care much for high-detail graphics.

If you see anything that might make this incompatible please tell me.

PCPartPicker part list: http://pcpartpicker.com/p/js9V
Price breakdown by merchant: http://pcpartpicker.com/p/js9V/by_merchant/
Benchmarks: http://pcpartpicker.com/p/js9V/benchmarks/

CPU: Intel Core i3-3220 3.3GHz Dual-Core Processor ($119.99 @ NCIX US)
Motherboard: ASRock B75M-GL Micro ATX LGA1155 Motherboard ($67.55 @ Newegg)
Memory: Corsair XMS3 4GB (1 x 4GB) DDR3-1333 Memory ($19.99 @ Newegg)
Storage: Hitachi 500GB 3.5" 7200RPM Internal Hard Drive ($59.86 @ NCIX US)
Video Card: Sapphire Radeon HD 7850 1GB Video Card ($169.99 @ Newegg)
Case: Antec Three Hundred ATX Mid Tower Case ($39.98 @ NCIX US)
Power Supply: Corsair Builder 430W 80 PLUS Certified ATX12V Power Supply ($24.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($15.99 @ SuperBiiz)
Operating System: Microsoft Windows 7 Home Premium SP1 (64-bit) ($92.28 @ Amazon)
Total: $610.62
(Prices include shipping, taxes, and discounts when available.)

Thanks.