Broken Link. This will suit your need, it will run Minecraft on 100+ FPS and any game on max-high settings.
PCPartPicker part list:
http://pcpartpicker.com/p/vLSQ
Price breakdown by merchant: http://pcpartpicker.com/p/vLSQ/by_merchant/
Benchmarks: http://pcpartpicker.com/p/vLSQ/benchmarks/
CPU: Intel Core i5-3470 3.2GHz Quad-Core Processor ($179.99 @ NCIX US)
Motherboard: ASRock H77M Micro ATX LGA1155 Motherboard ($64.99 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($49.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($69.99 @ NCIX US)
Video Card: XFX Radeon HD 7870 GHz Edition 2GB Video Card ($229.99 @ Newegg)
Case: Antec Three Hundred Two ATX Mid Tower Case ($69.99 @ Newegg)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($59.99 @ Newegg)
Optical Drive: Samsung SH-224BB DVD/CD Writer ($15.99 @ Newegg)
Total: $728.92
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-01-03 22:38 EST-0500)
Total: $748.91
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-01-03 22:37 EST-0500)