Computer for $1,300?

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($225.99 @ NCIX US)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ OutletPC)
Motherboard: Asus Maximus VI Hero ATX LGA1150 Motherboard ($189.99 @ NCIX US)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($59.99 @ Newegg)
Storage: Samsung 840 Pro Series 128GB 2.5" Solid State Disk ($134.98 @ Amazon)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($82.99 @ NCIX US)
Video Card: Asus Radeon R9 280X 3GB Video Card ($309.99 @ Amazon)
Case: Corsair 400R ATX Mid Tower Case ($89.99 @ Microcenter)
Power Supply: PC Power & Cooling Silencer MK III 600W 80+ Bronze Certified Semi-Modular ATX Power Supply ($57.99 @ Microcenter)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($16.99 @ Newegg)
Operating System: Microsoft Windows 8 (OEM) (64-bit) ($95.98 @ OutletPC)
Total: $1294.86
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-11-21 20:20 EST-0500)

Great motherboard for overclocking, and has excellent onboard sound. CPU can be overclocked if needed in the future. Gave you an SSD and HDD, though you could probably downgrade the SSD to the evo version to save some money. The power supply is made by Seasonic, very high quality. The case, personal preference, I like working with Corsair cases, easy to build in, high quality.

You could also optionally cut out the SSD, and invest in an even stronger GPU like a R9 290X or a 780 for example.
 
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