Here's what I recommend you :
PCPartPicker part list:
http://pcpartpicker.com/p/3pA2G
Price breakdown by merchant: http://pcpartpicker.com/p/3pA2G/by_merchant/
Benchmarks: http://pcpartpicker.com/p/3pA2G/benchmarks/
CPU: AMD FX-6300 3.5GHz 6-Core Processor ($109.99 @ Newegg)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($30.98 @ Newegg)
Motherboard: Asus M5A97 LE R2.0 ATX AM3+ Motherboard ($73.99 @ Newegg)
Memory: GeIL EVO POTENZA 8GB (2 x 4GB) DDR3-1600 Memory ($62.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($54.98 @ OutletPC)
Video Card: MSI GeForce GTX 770 2GB Video Card ($319.99 @ NCIX US)
Case: Cooler Master Elite 430 ATX Mid Tower Case ($29.99 @ Newegg)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($49.99 @ NCIX US)
Optical Drive: Asus DRW-24F1ST DVD/CD Writer ($14.99 @ Newegg)
Total: $742.89
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-10 18:07 EDT-0400)
It gets just a bit higher if you want everything to come from Newegg :
PCPartPicker part list:
http://pcpartpicker.com/p/3pA7w
Price breakdown by merchant: http://pcpartpicker.com/p/3pA7w/by_merchant/
Benchmarks: http://pcpartpicker.com/p/3pA7w/benchmarks/
CPU: AMD FX-6300 3.5GHz 6-Core Processor ($109.99 @ Newegg)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($30.98 @ Newegg)
Motherboard: Asus M5A97 LE R2.0 ATX AM3+ Motherboard ($73.99 @ Newegg)
Memory: GeIL EVO POTENZA 8GB (2 x 4GB) DDR3-1600 Memory ($62.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($64.99 @ Newegg)
Video Card: Gigabyte GeForce GTX 770 2GB Video Card ($329.99 @ Newegg)
Case: Cooler Master Elite 430 ATX Mid Tower Case ($29.99 @ Newegg)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($59.99 @ Newegg)
Optical Drive: Asus DRW-24F1ST DVD/CD Writer ($14.99 @ Newegg)
Total: $772.90
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-10 18:09 EDT-0400)