Here's a draft I made, not sure whether it's good or not.
It's also a bit over the price I'd like to hit.
PCPartPicker part list / Price breakdown by merchant / Benchmarks
CPU: AMD FX-4130 3.8GHz Quad-Core Processor ($94.98 @ OutletPC)
Motherboard: ASRock 960GM/U3S3 FX Micro ATX AM3+ Motherboard ($53.99 @ Newegg)
Memory: A-Data XPG Gaming Series 8GB (1 x 8GB) DDR3-1600 Memory ($62.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($59.99 @ NCIX US)
Video Card: XFX Radeon HD 5450 1GB Video Card (Purchased For $0.00)
Case: BitFenix Merc Alpha (Black) ATX Mid Tower Case ($29.99 @ NCIX US)
Power Supply: Antec 450W ATX Power Supply ($34.99 @ Newegg)
Total: $336.93