Best gaming computer setup £600

[Guest]

Hi everybody I've just decided that I am to build a new gaming computer, but I have no Idea of the best parts with price in mind.

I am on a budget of £600, can anybody help me out?

 

[AMD Radeon]

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3470 3.2GHz Quad-Core Processor (£140.99 @ Aria PC)
Motherboard: ASRock H77M Micro ATX LGA1155 Motherboard (£60.00 @ Amazon UK)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory (£35.99 @ Aria PC)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive (£53.99 @ CCL Computers)
Video Card: MSI Radeon HD 7850 2GB Video Card (£149.74 @ Scan.co.uk)
Case: Fractal Design Core 1000 MicroATX Mini Tower Case (£31.12 @ Aria PC)
Power Supply: Corsair Builder 600W 80 PLUS Certified ATX12V Power Supply (£54.98 @ Novatech)
Total: £526.81
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-01-04 23:42 GMT+0000)

leaves price room for anything else