i would just change the psu, this one has seasonic components
PCPartPicker part list:
http://pcpartpicker.com/p/1XFf4
Price breakdown by merchant: http://pcpartpicker.com/p/1XFf4/by_merchant/
Benchmarks: http://pcpartpicker.com/p/1XFf4/benchmarks/
CPU: Intel Core i5-4570 3.2GHz Quad-Core Processor ($189.99 @ Newegg)
Motherboard: MSI B85-G41 PC Mate ATX LGA1150 Motherboard ($78.23 @ OutletPC)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($79.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ OutletPC)
Video Card: Gigabyte Radeon R9 270X 2GB Video Card ($204.98 @ SuperBiiz)
Case: NZXT H2 Classic Silent (White) ATX Mid Tower Case ($84.50 @ Amazon)
Power Supply: Antec High Current Gamer 520W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($50.99 @ NCIX US)
Total: $748.66
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-11-05 01:37 EST-0500)