OK - try:
CPU: Intel Pentium G3258 3.2GHz Dual-Core Processor ($69.99 @ Amazon)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($28.99 @ Micro Center)
Motherboard: ASRock Z97 Anniversary ATX LGA1150 Motherboard ($84.99 @ Micro Center)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1866 Memory ($81.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($53.98 @ OutletPC)
Video Card: Gigabyte Radeon R7 260X 1GB Video Card ($99.99 @ Newegg)
Case: Cooler Master Elite 311 (Silver) ATX Mid Tower Case ($54.99 @ Amazon)
Power Supply: SeaSonic S12II 520W 80+ Bronze Certified ATX Power Supply ($65.98 @ SuperBiiz)
Total: $540.90