PCPartPicker part list:
http://pcpartpicker.com/p/bH3NZL
Price breakdown by merchant: http://pcpartpicker.com/p/bH3NZL/by_merchant/
CPU: Intel Pentium G3258 3.2GHz Dual-Core Processor ($63.99 @ SuperBiiz)
Thermal Compound: Arctic Silver Arctic Alumina Premium Ceramic Polysynthetic 1.75g Thermal Paste ($2.98 @ OutletPC)
Motherboard: MSI H81M-P33 Micro ATX LGA1150 Motherboard ($39.89 @ SuperBiiz)
Memory: Kingston Fury Series 8GB (2 x 4GB) DDR3-1600 Memory ($61.99 @ SuperBiiz)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($43.99 @ SuperBiiz)
Video Card: Sapphire Radeon R9 280 3GB Dual-X Video Card ($179.99 @ Newegg)
Case: Apevia X-HERMES-BL ATX Mid Tower Case ($53.99 @ SuperBiiz)
Power Supply: EVGA 500W 80+ Bronze Certified ATX Power Supply ($36.99 @ SuperBiiz)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($14.99 @ SuperBiiz)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($92.99 @ SuperBiiz)
Case Fan: Cooler Master SickleFlow 69.7 CFM 120mm Fan ($6.98 @ OutletPC)
Total: $598.77
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-02-09 14:35 EST-0500
I would say get the pentium I know that there might be the odd game coming out in the near future that might not run but you get much better upgradabilty in the future as well as it being cheaper as well.