$600 Gaming Tower for a friend

Solution
The PSU you had was crap so I upgraded it. This PSU will be able to handle a better GPU too if the computer was upgraded.
PCPartPicker part list / Price breakdown by merchant

CPU: AMD FX-6300 3.5GHz 6-Core Processor ($94.88 @ OutletPC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($26.98 @ OutletPC)
Motherboard: MSI 970A-G43 ATX AM3+ Motherboard ($64.98 @ OutletPC)
Memory: Pareema 8GB (2 x 4GB) DDR3-1600 Memory ($46.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.89 @ OutletPC)
Video Card: XFX Radeon R9 280 3GB Black Edition Double Dissipation Video...
The PSU you had was crap so I upgraded it. This PSU will be able to handle a better GPU too if the computer was upgraded.
PCPartPicker part list / Price breakdown by merchant

CPU: AMD FX-6300 3.5GHz 6-Core Processor ($94.88 @ OutletPC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($26.98 @ OutletPC)
Motherboard: MSI 970A-G43 ATX AM3+ Motherboard ($64.98 @ OutletPC)
Memory: Pareema 8GB (2 x 4GB) DDR3-1600 Memory ($46.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.89 @ OutletPC)
Video Card: XFX Radeon R9 280 3GB Black Edition Double Dissipation Video Card ($149.99 @ Newegg)
Case: Thermaltake VL80001W2Z ATX Mid Tower Case ($22.99 @ Micro Center)
Power Supply: SeaSonic S12II 520W 80+ Bronze Certified ATX Power Supply ($58.99 @ SuperBiiz)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($18.89 @ OutletPC)
Operating System: Microsoft Windows 8.1 OEM (64-bit) ($87.98 @ OutletPC)
Total: $622.56
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-06-12 23:10 EDT-0400
 
Solution


I agree but look at all the websites and shipping the OP is going to pay, plus you have him going to Microcenter for a case. Choose 1 website and order all your parts from it, you may spend a few dollars more but it will save you in the end.