Motherboard * ASUS F2A55-M ￥ 406
Memory * ADATA 4GB DDR3 1600 ￥ 180X2
Hard disk *Seagate Barracuda 500GB 7200 ￥ 329
Graphics card Shadow Racing ( Galaxy GTX650 Tiger 1G ￥ 655
Chassis Sigma Miracle 3 ￥ 90
Power Supply Antec BP300P ￥ 179
Monitor HKC T2211L 22-inch Widescreen LED ￥ 699
Total ￥ 2,414
This configuration is basically what you need.
This setup basically meets your needs.