$1200 build for gaming

Solution
A little. I could give you 16 gigs of ram. Or a better CPU cooler and a 2TB HDD. Depends on what is important to you. Here is the build with 16 gigs of ram.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($338.99 @ NCIX US)
CPU Cooler: Cooler Master V6 GT 93.7 CFM CPU Cooler ($49.99 @ SuperBiiz)
Motherboard: Gigabyte GA-Z97-HD3 ATX LGA1150 Motherboard ($98.99 @ Newegg)
Memory: G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-2400 Memory ($141.30 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Drive ($85.73 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5"...
Ok what do ya think?

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($338.99 @ NCIX US)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ OutletPC)
Motherboard: Gigabyte GA-Z97-HD3 ATX LGA1150 Motherboard ($98.99 @ Newegg)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($72.00 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Drive ($85.73 @ Amazon)
Storage: Western Digital RE4-GP 2TB 3.5" 7200RPM Internal Hard Drive ($82.49 @ Amazon)
Video Card: Gigabyte Radeon R9 290 4GB WINDFORCE Video Card ($349.99 @ NCIX US)
Case: Azza Solano 1000R ATX Full Tower Case ($79.99 @ Newegg)
Power Supply: XFX 650W 80+ Bronze Certified ATX Power Supply ($49.99 @ NCIX US)
Optical Drive: LG GH24NSB0 DVD/CD Writer ($13.99 @ Newegg)
Total: $1187.14
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-25 22:01 EDT-0400
 
This is my suggestion:

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($224.99 @ NCIX US)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ OutletPC)
Motherboard: Gigabyte GA-Z87X-UD4H ATX LGA1150 Motherboard ($163.98 @ SuperBiiz)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($89.98 @ OutletPC)
Storage: Sandisk Ultra Plus 128GB 2.5" Solid State Drive ($59.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($57.23 @ OutletPC)
Video Card: Gigabyte Radeon R9 290 4GB WINDFORCE Video Card ($349.99 @ NCIX US)
Case: Rosewill THOR V2 ATX Full Tower Case ($103.99 @ Amazon)
Power Supply: EVGA 750W 80+ Gold Certified Fully-Modular ATX Power Supply ($99.99 @ Micro Center)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($15.98 @ OutletPC)
Total: $1196.10
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-25 22:02 EDT-0400
 
A little. I could give you 16 gigs of ram. Or a better CPU cooler and a 2TB HDD. Depends on what is important to you. Here is the build with 16 gigs of ram.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($338.99 @ NCIX US)
CPU Cooler: Cooler Master V6 GT 93.7 CFM CPU Cooler ($49.99 @ SuperBiiz)
Motherboard: Gigabyte GA-Z97-HD3 ATX LGA1150 Motherboard ($98.99 @ Newegg)
Memory: G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-2400 Memory ($141.30 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Drive ($85.73 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($57.23 @ OutletPC)
Video Card: Gigabyte Radeon R9 290 4GB WINDFORCE Video Card ($349.99 @ NCIX US)
Case: Azza Solano 1000R ATX Full Tower Case ($79.99 @ Newegg)
Power Supply: XFX 650W 80+ Bronze Certified ATX Power Supply ($49.99 @ NCIX US)
Optical Drive: LG GH24NSB0 DVD/CD Writer ($13.99 @ Newegg)
Total: $1251.19
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-25 22:14 EDT-0400
 
Solution
Or you could also go with the stock CPU cooler and up the GPU to a 290x.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($338.99 @ NCIX US)
Motherboard: Gigabyte GA-Z97-HD3 ATX LGA1150 Motherboard ($98.99 @ Newegg)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($79.99 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Drive ($85.73 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($57.23 @ OutletPC)
Video Card: Gigabyte Radeon R9 290X 4GB WINDFORCE Video Card ($489.99 @ Newegg)
Case: Azza Solano 1000R ATX Full Tower Case ($79.99 @ Newegg)
Power Supply: XFX 650W 80+ Bronze Certified ATX Power Supply ($49.99 @ NCIX US)
Optical Drive: LG GH24NSB0 DVD/CD Writer ($13.99 @ Newegg)
Total: $1263.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-25 22:17 EDT-0400