Any Suggestions for a <£400 gaming rig?

[seetrusiak]

I want to build a gaming rig but dont know what parts are compatible or which psu is better for each graphics card so i decided to come on here and ask you guys!

I just want a pc that can run minecraft with shaders, Battlefield 3 and crysis 2.

I will also need a new OS so if you could add that to the budget that would be great!

Thanks in advance!

 

[AMD Radeon]

400 build with/without OS

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD FX-6300 3.5GHz 6-Core Processor (£83.99 @ Aria PC)
Motherboard: Asus M5A97 R2.0 ATX AM3+ Motherboard (£59.00 @ Amazon UK)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1866 Memory (£52.99 @ Amazon UK)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive (£46.85 @ Aria PC)
Video Card: MSI GeForce GTX 650 Ti Boost 2GB Video Card
Case: Xigmatek ASGARD PRO (Black) ATX Mid Tower Case (£34.68 @ CCL Computers)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply (£49.86 @ Scan.co.uk)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) (£68.39 @ Aria PC)
Total: £395.76
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-09-11 22:43 BST+0100)

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PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-4430 3.0GHz Quad-Core Processor (£137.99 @ Aria PC)
Motherboard: MSI H87M-G43 Micro ATX LGA1150 Motherboard (£68.50 @ Amazon UK)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1866 Memory (£52.99 @ Amazon UK)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive (£46.85 @ Aria PC)
Video Card: MSI GeForce GTX 650 Ti Boost 2GB Video Card
Case: Fractal Design Core 1000 USB 3.0 MicroATX Mid Tower Case (£34.98 @ Novatech)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply (£49.86 @ Scan.co.uk)
Total: £391.17
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-09-11 22:40 BST+0100)