What card should I buy for this set up: Gaming Case: Raidmax Viper GX Mid-Tower Gaming Case w/ USB 3.0, External SSD 2.5 inch EZ swap & Side-Panel Window
CPU: Intel® Core™ i5-4690K 3.5 GHz 6MB Intel Smart Cache LGA1150 (All Venom OC Certified)
CPU / Processor Cooling Fan: Corsair Hydro Series H60 High Performance Liquid Cooling System 120MM Radiator & Fan (Dual Standard 120MM Fans (Push-Pull))
Motherboard: ASUS Z97-A ATX w/ Intel GbLAN, 3 PCIe x16, 2 PCIe x1, 2 PCI, 1 x M.2, 1x SATA Express, 4x SATA 6Gb/s (All Venom OC Certified)
RAM / System Memory: 8GB (4GBx2) DDR3/1866MHz Dual Channel Memory (ADATA XPG V2)
Power Supply: 550 Watts - Corsair CSM Series CS550M 80 Plus Gold Certified Modular Ultra Quiet Power Supply
Hard Drive: 2TB (2TBx1) SATA-III 6.0Gb/s 64MB Cache 7200RPM HDD (Single Drive)
The AMD Radeon R9 290 or the nVidia GeForce GTX 770?
CPU: Intel® Core™ i5-4690K 3.5 GHz 6MB Intel Smart Cache LGA1150 (All Venom OC Certified)
CPU / Processor Cooling Fan: Corsair Hydro Series H60 High Performance Liquid Cooling System 120MM Radiator & Fan (Dual Standard 120MM Fans (Push-Pull))
Motherboard: ASUS Z97-A ATX w/ Intel GbLAN, 3 PCIe x16, 2 PCIe x1, 2 PCI, 1 x M.2, 1x SATA Express, 4x SATA 6Gb/s (All Venom OC Certified)
RAM / System Memory: 8GB (4GBx2) DDR3/1866MHz Dual Channel Memory (ADATA XPG V2)
Power Supply: 550 Watts - Corsair CSM Series CS550M 80 Plus Gold Certified Modular Ultra Quiet Power Supply
Hard Drive: 2TB (2TBx1) SATA-III 6.0Gb/s 64MB Cache 7200RPM HDD (Single Drive)
The AMD Radeon R9 290 or the nVidia GeForce GTX 770?