Well, they are different generations, so it`s hard to compare the two.
This is a bit over budget, but let me know what you think about it:
PCPartPicker part list:
http://pcpartpicker.com/p/m7H9wP
Price breakdown by merchant: http://pcpartpicker.com/p/m7H9wP/by_merchant/
CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($184.99 @ NCIX US)
Motherboard: MSI H87M-E35 Micro ATX LGA1150 Motherboard ($76.98 @ SuperBiiz)
Memory: Team Vulcan 8GB (2 x 4GB) DDR3-1600 Memory ($71.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($57.24 @ Amazon)
Video Card: Sapphire Radeon R9 270X 2GB Vapor-X Video Card ($169.99 @ Amazon)
Power Supply: Cooler Master i600 600W 80+ Bronze Certified ATX Power Supply ($64.99 @ Newegg)
Total: $626.18
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-06 06:50 EDT-0400