Could be something like this :
PCPartPicker part list:
http://uk.pcpartpicker.com/p/pX8DhM
Price breakdown by merchant: http://uk.pcpartpicker.com/p/pX8DhM/by_merchant/
CPU: Intel Core i3-4130 3.4GHz Dual-Core Processor (£78.79 @ Aria PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£23.54 @ CCL Computers)
Motherboard: Gigabyte GA-H87N-WIFI Mini ITX LGA1150 Motherboard (£98.69 @ Overclockers.co.uk)
Memory: Kingston Fury Series 8GB (2 x 4GB) DDR3-1866 Memory (£62.68 @ Amazon UK)
Storage: Western Digital WD Blue 500GB 2.5" 5400RPM Internal Hard Drive (£32.99 @ Amazon UK)
Video Card: Sapphire Radeon R9 270X 2GB Vapor-X Video Card (£134.99 @ Ebuyer)
Case: NZXT Source 210 (Black) ATX Mid Tower Case (£30.25 @ Scan.co.uk)
Power Supply: SeaSonic S12G 550W 80+ Gold Certified ATX Power Supply (£72.79 @ Amazon UK)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer (£10.46 @ Aria PC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) (£72.35 @ Aria PC)
Total: £617.53
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-11-21 14:28 GMT+0000