And also, do you think the 620W PSU I picked is enough? I'm going to start off with only 1 GPU and later upgrade to SLI.
CPU: AMD FX-8320 3.5GHz 8-Core Processor ($173.97 @ Outlet PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ Outlet PC)
Motherboard: Asus SABERTOOTH 990FX/GEN3 R2.0 ATX AM3+ Motherboard ($199.99 @ Newegg)
Memory: G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-1600 Memory ($124.99 @ Newegg)
Storage: Samsung 840 Pro Series 128GB 2.5" Solid State Disk ($139.19 @ Amazon)
Storage: Toshiba 3TB 3.5" 7200RPM Internal Hard Drive ($124.99 @ Newegg)
Video Card: MSI GeForce GTX 660 Ti 2GB Video Card (2-Way SLI) ($279.99 @ Newegg)
Video Card: MSI GeForce GTX 660 Ti 2GB Video Card (2-Way SLI) ($279.99 @ Newegg)
Case: Cooler Master HAF 922 ATX Mid Tower Case ($82.00 @ Newegg)
Case Fan: Cooler Master Megaflow 110.0 CFM 200mm Fan ($11.93 @ NCIX US)
Power Supply: SeaSonic 620W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($88.98 @ SuperBiiz)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.96 @ Outlet PC)
Total: $1530.96
(Prices include shipping, taxes, and discounts when available.)