PCPartPicker part list:
http://pcpartpicker.com/p/3dm4yc
Price breakdown by merchant: http://pcpartpicker.com/p/3dm4yc/by_merchant/
CPU: Intel Core i3-6100 3.7GHz Dual-Core Processor ($123.90 @ Amazon)
Motherboard: ASRock B150M Pro4S Micro ATX LGA1151 Motherboard ($78.99 @ Newegg)
Memory: G.Skill NT Series 8GB (1 x 8GB) DDR4-2133 Memory ($33.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.89 @ OutletPC)
Video Card: PNY GeForce GTX 960 4GB Video Card ($182.99 @ Newegg)
Case: Xion XON-310_BK MicroATX Mid Tower Case ($24.98 @ Newegg)
Power Supply: Thermaltake 500W 80+ Bronze Certified ATX Power Supply ($29.99 @ Newegg)
Total: $524.73
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-02-08 08:46 EST-0500
You wont need a separate CPU cooler, unless you plan to overclock your CPU which wont be necessary.