Which of these builds would be faster for 1080p gaming? Explain why.

Which of these builds would be faster for 1080p gaming? Explain why.
Build 1
PCPartPicker part list: http://pcpartpicker.com/p/KPFc8d
Price breakdown by merchant: http://pcpartpicker.com/p/KPFc8d/by_merchant/

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($319.99 @ SuperBiiz)
CPU Cooler: CRYORIG H7 49.0 CFM CPU Cooler ($34.50 @ Newegg)
Motherboard: MSI Z97S SLI Krait Edition ATX LGA1150 Motherboard ($97.98 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($42.89 @ OutletPC)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.98 @ OutletPC)
Video Card: MSI Radeon R9 390 8GB Video Card ($304.99 @ Micro Center)
Power Supply: EVGA SuperNOVA GS 550W 80+ Gold Certified Fully-Modular ATX Power Supply ($65.98 @ Newegg)
Operating System: Microsoft Windows 10 Home OEM (64-bit) ($89.88 @ OutletPC)
Wireless Network Adapter: TP-Link TL-WDN4800 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter ($38.89 @ OutletPC)
Case Fan: Noctua NF-F12 PWM 55.0 CFM 120mm Fan ($19.89 @ OutletPC)
Case Fan: Noctua NF-F12 PWM 55.0 CFM 120mm Fan ($19.89 @ OutletPC)
Monitor: Acer R240HY bidx 60Hz 23.8" Monitor ($129.99 @ Amazon)
Other: Case ($59.99)
Total: $1274.84
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-12-05 22:04 EST-0500

Build 2
PCPartPicker part list: http://pcpartpicker.com/p/XmqjdC
Price breakdown by merchant: http://pcpartpicker.com/p/XmqjdC/by_merchant/

CPU: Intel Core i5-6500 3.2GHz Quad-Core Processor ($199.99 @ SuperBiiz)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($19.99 @ Newegg)
Motherboard: Asus H170-PRO ATX LGA1151 Motherboard ($110.00 @ B&H)
Memory: G.Skill Ripjaws V Series 8GB (2 x 4GB) DDR4-2133 Memory ($45.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.98 @ OutletPC)
Video Card: MSI GeForce GTX 980 4GB Twin Frozr Video Card ($429.99 @ Micro Center)
Power Supply: EVGA SuperNOVA GS 550W 80+ Gold Certified Fully-Modular ATX Power Supply ($65.98 @ Newegg)
Operating System: Microsoft Windows 10 Home OEM (64-bit) ($89.88 @ OutletPC)
Wireless Network Adapter: TP-Link TL-WDN4800 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter ($38.89 @ OutletPC)
Monitor: Acer R240HY bidx 60Hz 23.8" Monitor ($129.99 @ Amazon)
Other: Case ($59.99)
Total: $1240.67
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-12-05 22:03 EST-0500