Just cut $150 off your build and this one will perform much better...
PCPartPicker part list:
http://pcpartpicker.com/p/vLWH
Price breakdown by merchant: http://pcpartpicker.com/p/vLWH/by_merchant/
Benchmarks: http://pcpartpicker.com/p/vLWH/benchmarks/
CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($169.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ Amazon)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($127.99 @ Amazon)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($49.99 @ Newegg)
Storage: Seagate Barracuda 1.5TB 3.5" 7200RPM Internal Hard Drive ($74.99 @ NCIX US)
Storage: Intel 330 Series 180GB 2.5" Solid State Disk ($129.68 @ NCIX US)
Video Card: XFX Radeon HD 7870 GHz Edition 2GB Video Card ($229.99 @ Newegg)
Case: Antec Three Hundred Two ATX Mid Tower Case ($69.99 @ Newegg)
Power Supply: XFX 650W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($79.99 @ NCIX US)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($16.99 @ Newegg)
Monitor: Asus VH236H 23.0" Monitor ($149.99 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Keyboard: Microsoft SIDEWINDER X4 Wired Gaming Keyboard ($40.99 @ Newegg)
Mouse: Microsoft SideWinder X5 Wired Laser Mouse ($79.99 @ Amazon)
Total: $1328.53
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-01-03 22:45 EST-0500)