This would be better. What about the case?
PCPartPicker part list:
http://pcpartpicker.com/p/sNRkRB
Price breakdown by merchant: http://pcpartpicker.com/p/sNRkRB/by_merchant/
CPU: Intel Core i3-4150 3.5GHz Dual-Core Processor ($99.98 @ OutletPC)
Motherboard: ASRock H97M Anniversary Micro ATX LGA1150 Motherboard ($66.99 @ SuperBiiz)
Memory: A-Data XPG V1.0 8GB (2 x 4GB) DDR3-1600 Memory ($59.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($51.85 @ OutletPC)
Video Card: Sapphire Radeon R9 280 3GB Dual-X Video Card ($164.99 @ Newegg)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($25.99 @ Newegg)
Total: $469.79
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-12-19 21:39 EST-0500
or if you don't mind getting a cheapo motherboard, you can keep the i5
PCPartPicker part list:
http://pcpartpicker.com/p/wdp8yc
Price breakdown by merchant: http://pcpartpicker.com/p/wdp8yc/by_merchant/
CPU: Intel Core i5-4440 3.1GHz Quad-Core Processor ($169.99 @ Amazon)
Motherboard: Gigabyte GA-H81M-H Micro ATX LGA1150 Motherboard ($42.98 @ Newegg)
Memory: A-Data XPG V1.0 8GB (2 x 4GB) DDR3-1600 Memory ($59.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($51.85 @ OutletPC)
Video Card: Sapphire Radeon R9 280 3GB Dual-X Video Card ($164.99 @ Newegg)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($25.99 @ Newegg)
Total: $515.79
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-12-19 21:41 EST-0500
I'd rather have the i3 + H97 motherboard.