PCPartPicker part list:
http://pcpartpicker.com/p/wG2nyc
Price breakdown by merchant: http://pcpartpicker.com/p/wG2nyc/by_merchant/
CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($234.99 @ NCIX US)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ OutletPC)
Motherboard: Asus Z97-A ATX LGA1150 Motherboard ($143.49 @ Amazon)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1866 Memory ($79.99 @ NCIX US)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($49.99 @ Amazon)
Video Card: Gigabyte Radeon R9 280 3GB WINDFORCE Video Card ($216.99 @ Newegg)
Case: Corsair 400R ATX Mid Tower Case ($89.99 @ NCIX US)
Power Supply: XFX 650W 80+ Bronze Certified ATX Power Supply ($69.99 @ NCIX US)
Optical Drive: LG GH24NSB0 DVD/CD Writer ($15.98 @ OutletPC)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($84.98 @ OutletPC)
Wireless Network Adapter: Rosewill RNX-N150PCe 802.11b/g/n PCI-Express x1 Wi-Fi Adapter ($10.98 @ Amazon)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($29.99 @ Amazon)
Total: $1057.34
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-07-21 22:27 EDT-0400
This is more than enough for your purposes, so tell me if it's too expensive. This will have no tryouble maxing out most games. You could even record/stream at the same time.