Which is better? Advice on build

[Lord Cameron]

MOBO: ASUS M5A78L-M LX3 VGA+SND+GLN HT5200 SATA2 DDR3 Motherboard

CPU: AMD Bulldozer FX-4100 Socket AM3+ 4 Core Processor - 3.60GHz, 3.80GHz Turbo

GPU: Gigabyte NVIDIA GTX660 2GB DDR5 PCI-E Graphics Card

RAM: Corsair CMZ4GX3M1A1600C9 4GB 1600MHz CL9 DDR3Vengeance Memory Module

PSU: Corsair Builder Series CX 500 Watt ATX/EPS 80 PLUS Bronze Power Supply Unit

HDD: Western Digital 1TB internal Hard Drive - Caviar Blue (3.5 inch)

Heat sync: Cooler Master Hyper 212 EVO - Intel/AMD

Case: Fractal Design Core 1000 Series Micro ATX Case - Black Pearl

£456.85 from amazon

or

MOBO: MSI H61M-P31-G3 Motherboard (Intel H61 Processor, 16GB RAM, M-ATX, Gigabit LAN, Socket LGA1155)

CPU: Intel Pentium G850 2.8GHz Processor, Socket 1155, L3 3MB, Sandy Bridge, 32nm

GPU: Gigabyte NVIDIA GTX660 2GB DDR5 PCI-E Graphics Card

RAM: Corsair CMZ4GX3M1A1600C9 4GB 1600MHz CL9 DDR3Vengeance Memory Module

PSU: Corsair Builder Series CX 500 Watt ATX/EPS 80 PLUS Bronze Power Supply Unit

HDD: Western Digital 1TB internal Hard Drive - Caviar Blue (3.5 inch)

Heat sync: Cooler Master Hyper 212 EVO - Intel/AMD

Case: Fractal Design Core 1000 Series Micro ATX Case - Black Pearl

£431.17 from amazon

Which one is the better in terms of performance?

Would you change any parts of you were to buy either build?

 

[Seladon-1370374]

Neither of those two, both will bottleneck your GPU. Here's my recommendation :

PCPartPicker part list: http://uk.pcpartpicker.com/p/1BQJR
Price breakdown by merchant: http://uk.pcpartpicker.com/p/1BQJR/by_merchant/
Benchmarks: http://uk.pcpartpicker.com/p/1BQJR/benchmarks/

CPU: AMD FX-6300 3.5GHz 6-Core Processor (£86.39 @ Aria PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£22.85 @ CCL Computers)
Motherboard: Asus M5A97 R2.0 ATX AM3+ Motherboard (£59.00 @ Amazon UK)
Memory: Corsair XMS3 4GB (2 x 2GB) DDR3-1600 Memory (£24.13 @ Amazon UK)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive (£46.85 @ Aria PC)
Video Card: Gigabyte GeForce GTX 660 2GB Video Card (£144.99 @ Amazon UK)
Case: Cooler Master Force 500 ATX Mid Tower Case (£32.87 @ Scan.co.uk)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply (£49.85 @ Aria PC)
Total: £466.93
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-09-09 20:23 BST+0100)