This is a solid build, you dont need 16gb ram for gaming.
PCPartPicker part list:
http://pcpartpicker.com/p/2LaaR
Price breakdown by merchant: http://pcpartpicker.com/p/2LaaR/by_merchant/
Benchmarks: http://pcpartpicker.com/p/2LaaR/benchmarks/
CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($229.97 @ SuperBiiz)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($34.98 @ SuperBiiz)
Motherboard: ASRock Z87 Extreme4 ATX LGA1150 Motherboard ($129.99 @ Microcenter)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($74.99 @ Microcenter)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Disk ($89.99 @ Adorama)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($59.66 @ OutletPC)
Video Card: EVGA GeForce GTX 770 2GB Video Card ($329.99 @ NCIX US)
Case: Corsair 400R ATX Mid Tower Case ($59.99 @ NCIX US)
Power Supply: EVGA SuperNOVA 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($74.99 @ Microcenter)
Optical Drive: LG GH24NSB0 DVD/CD Writer ($14.99 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ OutletPC)
Total: $1182.53
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-02-01 00:11 EST-0500)