That CPU will bottleneck the GTX 960 and you'll want to take dual channel ram. I made a build for you which is balanced and doesn't get bottlenecked.
PCPartPicker part list / Price breakdown by merchant
| Type | Item | Price |
|---|---|---|
| CPU | AMD FX-6300 3.5GHz 6-Core OEM/Tray Processor | £134.00 @ Amazon UK |
| CPU Cooler | Cooler Master Hyper TX3 Evo 43.1 CFM CPU Cooler | £16.98 @ Aria PC |
| Motherboard | ASRock 970 Pro3 R2.0 ATX AM3+ Motherboard | £52.34 @ Amazon UK |
| Memory | Patriot Signature 8GB (2 x 4GB) DDR3-1600 Memory | £29.99 @ Amazon UK |
| Storage | Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive | £32.94 @ Aria PC |
| Video Card | MSI Radeon R7 370 4GB Video Card | £133.96 @ More Computers |
| Case | Corsair 200R ATX Mid Tower Case | £49.98 @ Aria PC |
| Power Supply | EVGA 500W 80+ Bronze Certified ATX Power Supply | £41.76 @ CCL Computers |
| Optical Drive | Samsung SH-224DB/BEBE DVD/CD Writer | £9.00 @ CCL Computers |
| Prices include shipping, taxes, rebates, and discounts | ||
| Total | £500.95 | |
| Generated by PCPartPicker 2016-01-11 16:00 GMT+0000 |