This is the specification for pc gaming under $800. I choose intel & nvidia configuration to efficiency the energy consumption. If you need a monitor, this is the best price pc gaming for under $800. For the gaming benchmarks you can search in youtube about GTX 650 Ti 2GB Boost Edition performance for ultra setting gaming, so far its nice for ultra setting game like BT4, Watch Dogs etc. Sorry for my bad english hehe
CPU Intel Core i5-4570 3.2GHz Quad-Core $196.97
Motherboard Asus B85-PLUS ATX LGA1150 $98.98
Memory Corsair 8GB (2 x 4GB) DDR3-1600 $86.99
Storage Western Digital Caviar Black 1TB 3.5" 7200RPM $73.98
Video Card GeForce GTX 650 Ti 2GB Boost Edition $150.66
Case Cooler Master Elite 430 ATX Mid Tower $27.99
Power Supply Corsair 500W ATX12V $49.99
Optical Drive Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer $19.98
Monitor Acer V196HQLAb 18.5" $85.78
Total: $791.32
http://pcpartpicker.com/user/derrymisavan/saved/ZJtQzy