Here is a build
PCPartPicker part list:
http://pcpartpicker.com/p/k66hYJ
Price breakdown by merchant: http://pcpartpicker.com/p/k66hYJ/by_merchant/
CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($225.98 @ SuperBiiz)
Motherboard: MSI Z97 PC MATE ATX LGA1150 Motherboard ($89.99 @ Micro Center)
Memory: G.Skill Sniper 8GB (2 x 4GB) DDR3-1600 Memory ($79.98 @ OutletPC)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($54.98 @ OutletPC)
Video Card: MSI GeForce GTX 760 2GB TWIN FROZR Video Card ($184.99 @ Newegg)
Case: Rosewill CHALLENGER ATX Mid Tower Case ($39.99 @ Newegg)
Power Supply: EVGA SuperNOVA NEX 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($49.99 @ Newegg)
Total: $725.90
Prices include shipping, taxes, and discounts when available
AMD:
PCPartPicker part list:
http://pcpartpicker.com/p/GLvVLk
Price breakdown by merchant: http://pcpartpicker.com/p/GLvVLk/by_merchant/
CPU: AMD FX-8320 3.5GHz 8-Core Processor ($139.98 @ NCIX US)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($28.98 @ OutletPC)
Motherboard: Gigabyte GA-970A-D3P ATX AM3+/AM3 Motherboard ($69.99 @ Newegg)
Memory: G.Skill Sniper 8GB (2 x 4GB) DDR3-1600 Memory ($79.98 @ OutletPC)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($54.98 @ OutletPC)
Video Card: Gigabyte GeForce GTX 760 2GB WINDFORCE Video Card ($214.99 @ NCIX US)
Case: Corsair 200R ATX Mid Tower Case ($39.99 @ Micro Center)
Power Supply: EVGA SuperNOVA NEX 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($49.99 @ NCIX US)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($14.99 @ Newegg)
Total: $693.87
Prices include shipping, taxes, and discounts when available