Gabe wants to build a PC
Budget Gamer PC
Case: Ark Technology ATX Computer Case $27.99 -460mm 183mm 410mm
Power Supply: LOGISYS Computer 575W $29.99
Processor: Intel i3 3.2 Ghz ~$82.00
MotherBoard: ATX High Performance CF Intel Motherboard $75.00
Ram: CORSAIR Vengeance (2 x 4GB) $52.99
Graphics Card: NVidia Zotac GeForce GT 720 2GB 64-Bit $59.99
Total: $327.96
Workstation
For ~$1,200, you can build Peteris Krumins' workstation http://www.catonmat.net/blog/my-new-workstation-2015/
He put his parts list up on PC part picker