Opinion on computer parts?

PCPartPicker part list: http://uk.pcpartpicker.com/p/2fZA5
Price breakdown by merchant: http://uk.pcpartpicker.com/p/2fZA5/by_merchant/
Benchmarks: http://uk.pcpartpicker.com/p/2fZA5/benchmarks/

CPU: AMD A10-6800K 4.1GHz Quad-Core Processor (£104.99 @ Ebuyer)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£23.98 @ Scan.co.uk)
Motherboard: ASRock FM2A88M EXTREME4+ Micro ATX FM2+ Motherboard (£49.14 @ Dabs)
Memory: Corsair Vengeance LP 8GB (1 x 8GB) DDR3-1600 Memory (£60.61 @ Ebuyer)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£45.42 @ CCL Computers)
Wireless Network Adapter: TP-Link TL-WN781ND 802.11b/g/n PCI Wi-Fi Adapter (£8.70 @ CCL Computers)
Case: Zalman Z5 ATX Mid Tower Case (£33.06 @ Scan.co.uk)
Power Supply: EVGA 600B 600W 80+ Bronze Certified ATX Power Supply (£47.52 @ Scan.co.uk)
Optical Drive: Lite-On iHDS118-04 DVD/CD Drive (£10.78 @ Scan.co.uk)
Total: £384.20
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-12-06 17:43 GMT+0000)
 

I would still swap to the XFX power supply, but more importantly: You need to get 2 sticks of RAM. 1 will NOT do when you're running an APU. It will pretty much cut graphics performance in half, because it's memory bottlenecked.

So like this - or with the 450W version of the same power supply:

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD A10-6800K 4.1GHz Quad-Core Processor (£104.99 @ Ebuyer)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£23.98 @ Scan.co.uk)
Motherboard: ASRock FM2A88M EXTREME4+ Micro ATX FM2+ Motherboard (£49.14 @ Dabs)
Memory: Corsair Vengeance LP 8GB (2 x 4GB) DDR3-2133 Memory (£53.49 @ Amazon UK)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£45.42 @ CCL Computers)
Wireless Network Adapter: TP-Link TL-WN781ND 802.11b/g/n PCI Wi-Fi Adapter (£8.70 @ CCL Computers)
Case: Zalman Z5 ATX Mid Tower Case (£33.06 @ Scan.co.uk)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply (£47.20 @ CCL Computers)
Optical Drive: Lite-On iHDS118-04 DVD/CD Drive (£10.78 @ Scan.co.uk)
Total: £376.76
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-12-06 21:09 GMT+0000)