Have the following:
Computer Case : BitFenix Prodigy Arctic White Steel
Power Supply Upgrade : 500W CORSAIR Power Supply
Motherboard : ECS ITX Motherboard
DDR3 Memory : 8GB DDR3-1333/1600 PC3-10666/12800
Processor : Intel Core G1610
CPU Cooling Fan : Original Factory Cooling Fan and Heatsink
SSD : OCZ Agility 2 SSD 120 GB Solid State Drive
Hard Drive : 500GB Hard Drive ( Storage )
Video Card : AMD Radeon 7870 2GB
DVD Recorder : LG BLUE RAY
Network Card : 10/100/1000 Gigabit Network Card (onboard)
* the only thing you'll need to make it a higher end gaming rig is the CPU ( id recommend getting an i5 or something )