This would be a good pc for gaming, but can't overclock. If you want an overclocking build I can make changes.
PCPartPicker part list /
Price breakdown by merchant /
Benchmarks
CPU: Intel Core i5-4670 3.4GHz Quad-Core Processor ($204.99 @ Amazon)
Motherboard: ASRock H87 Pro4 ATX LGA1150 Motherboard ($78.36 @ Newegg)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory ($69.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($56.98 @ OutletPC)
Video Card: Asus GeForce GTX 770 2GB DirectCU II Video Card ($328.99 @ SuperBiiz)
Case: Corsair 300R ATX Mid Tower Case ($59.99 @ Micro Center)
Power Supply: Antec High Current Gamer 620W 80+ Bronze Certified Semi-Modular ATX Power Supply ($87.24 @ Amazon)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($14.99 @ Newegg)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.98 @ OutletPC)
Total: $991.51
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-05-08 17:21 EDT-0400)
-CPU- i5-4670, no OC cpu
-GPU- Gtx 770, runs almost all games at ultra settings 60+ FPS
-PSU- Antec, semi-modular 620w psu. If you can't find this model look for seasonic or XFX brand power supplies, 600w or more.
-RAM- 8gb is enough, 1600mhz, 1.5v ram is what you need if you can't find this exact brand. make sure to get a set of 2 sticks with 4gb each since the motherboard will run them in dual channel mode for better performance.
Includes Windows OS in the price.
Also you could look at getting an SSD for your OS to make boot up faster.