Here's something that may work for you:
PCPartPicker part list /
Price breakdown by merchant /
BenchmarksCPU: Intel Core i5-2500K 3.3GHz Quad-Core Processor ($179.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 Plus 76.8 CFM Sleeve Bearing CPU Cooler ($19.99 @ Newegg)
Motherboard: Biostar TZ77B ATX LGA1155 Motherboard ($79.99 @ Newegg)
Memory: Patriot Signature 8GB (2 x 4GB) DDR3-1600 Memory ($41.99 @ Newegg)
Hard Drive: Samsung Spinpoint F3 1TB 3.5" 7200RPM Internal Hard Drive ($89.99 @ Newegg)
Video Card: EVGA GeForce GTX 560 1GB Video Card ($167.49 @ CompUSA)
Case: Cooler Master Elite 370 ATX Mid Tower Case ($35.18 @ NCIX US)
Power Supply: Corsair 500W ATX12V Power Supply ($37.99 @ Newegg)
Optical Drive: LG GH22NS90B DVD/CD Writer ($16.99 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (64-bit) ($99.99 @ Newegg)
Total (before mail-in rebates): $813.84
Mail-in Rebates: $-10.00
Total: $803.84(Using your selected merchants and only including nearby in-store pickup prices)
Lowest Possible Total: $769.59(Using all available merchants and including all in-store pickup prices)
(Generated by PCPartPicker 2012-04-29 11:13 EDT-0400)Just a hair over budget unless you have a local MicroCenter near you... if anything spluge and get the 560ti-448 will be a very balanced system.
cheers