PCPartPicker part list:
http://pcpartpicker.com/p/2lk7T
Price breakdown by merchant: http://pcpartpicker.com/p/2lk7T/by_merchant/
Benchmarks: http://pcpartpicker.com/p/2lk7T/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 ($29.98 @ OutletPC)
Motherboard: Asus M5A97 R2.0 ATX AM3+ Motherboard ($92.99 @ NCIX US)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Disk ($89.99 @ B&H)
Video Card: Asus Radeon R9 280X 3GB Video Card ($319.99 @ B&H)
Case: Fractal Design Define XL R2 (Titanium Grey) ATX Full Tower Case ($122.06 @ Amazon)
Power Supply: XFX 650W 80+ Bronze Certified ATX Power Supply ($59.99 @ NCIX US)
Total: $824.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-12-16 14:43 EST-0500)
I just put that together quick, you're well below 1200 with a 280x and ssd