Best off to start off fresh

I suggest this...
PCPartPicker part list:
http://pcpartpicker.com/p/DyNn
Price breakdown by merchant: http://pcpartpicker.com/p/DyNn/by_merchant/
Benchmarks: http://pcpartpicker.com/p/DyNn/benchmarks/
CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.99 @ Newegg)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($129.99 @ Microcenter)
Memory: G.Skill Sniper 8GB (2 x 4GB) DDR3-1600 Memory ($39.98 @ Outlet PC)
Storage: Crucial M4 128GB 2.5" Solid State Disk ($107.95 @ Mac Connection)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($75.98 @ SuperBiiz)
Video Card: Sapphire Radeon HD 7970 GHz Edition 3GB Video Card ($445.91 @ Newegg)
Case: Cooler Master HAF XM (Black) ATX Mid Tower Case ($129.99 @ Best Buy)
Power Supply: SeaSonic X Series 850W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($155.98 @ Newegg)
Optical Drive: LG UH12NS29 Blu-Ray Reader, DVD/CD Writer ($49.99 @ Amazon)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Monitor: Asus VH236H 23.0" Monitor ($157.98 @ SuperBiiz)
Total: $1603.71
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-02-14 17:54 EST-0500)