PCPartPicker part list:
http://pcpartpicker.com/p/qiyy
Price breakdown by merchant: http://pcpartpicker.com/p/qiyy/by_merchant/
Benchmarks: http://pcpartpicker.com/p/qiyy/benchmarks/
CPU: Intel Core i3-2100 3.1GHz Dual-Core Processor ($99.99 @ Amazon)
Motherboard: ASRock H61M-DGS Micro ATX LGA1155 Motherboard ($44.99 @ Amazon)
Memory: Patriot Intel Extreme Master, Limited Ed 8GB (2 x 4GB) DDR3-1600 Memory ($30.99 @ Newegg)
Storage: Western Digital RE2 500GB 3.5" 7200RPM Internal Hard Drive ($53.55 @ Compuvest)
Video Card: EVGA GeForce GTX 650 Ti 1GB Video Card ($139.99 @ Amazon)
Case: Fractal Design Core 1000 MicroATX Mini Tower Case ($39.99 @ Amazon)
Power Supply: Corsair Builder 430W 80 PLUS Bronze Certified ATX12V Power Supply ($35.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($17.89 @ Outlet PC)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($91.99 @ Amazon)
Total: $555.37
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2012-11-30 15:10 EST-0500)
The 650ti is a fine choice too. In the benchmark its 1 gb. The linked card has a hdmi port.
The motherboard has a decent onboard sound chip.