600$ ish Gaming PC Advice

Here is the best I could do. I tried to trim it down to cost for you. It is $587 after mail-in rebates. It comes to $613 before mail-in rebates.

PCPartPicker part list / Price breakdown by merchant

CPU: AMD FX-6300 3.5GHz 6-Core Processor ($99.99 @ Amazon)
Motherboard: MSI 970A-G43 ATX AM3+ Motherboard ($71.48 @ SuperBiiz)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($72.00 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($54.99 @ Amazon)
Video Card: HIS Radeon R9 270X 2GB IceQ X² Video Card ($173.98 @ Newegg)
Case: NZXT Source 210 Elite (White) ATX Mid Tower Case ($41.51 @ Amazon)
Power Supply: XFX 650W 80+ Bronze Certified ATX Power Supply ($49.99 @ NCIX US)
Optical Drive: Asus DRW-24F1ST DVD/CD Writer ($14.99 @ Amazon)
Wireless Network Adapter: Rosewill RNX-N150UBE 802.11b/g/n USB 2.0 Wi-Fi Adapter ($8.99 @ Amazon)
Total: $587.92
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-09-28 11:48 EDT-0400