PCPartPicker part list:
http://pcpartpicker.com/p/1OZ1r
Price breakdown by merchant: http://pcpartpicker.com/p/1OZ1r/by_merchant/
Benchmarks: http://pcpartpicker.com/p/1OZ1r/benchmarks/
CPU: Intel Core i5-4570 3.2GHz Quad-Core Processor ($199.99 @ Newegg)
Motherboard: Asus Z87-PRO ATX LGA1150 Motherboard ($169.99 @ Newegg)
Memory: Corsair Vengeance LP 8GB (2 x 4GB) DDR3-1866 Memory ($64.99 @ Newegg)
Total: $419.97
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-10-15 00:30 EDT-0400)