Wasting 400 pounds on a GPU for FX 6300? I'd rather not.
The most I would go for a FX 6300 would be rather a GTX 1060 6GB or a RX 580 8GB.
PCPartPicker part list:
https://uk.pcpartpicker.com/list/2ghntJ
Price breakdown by merchant: https://uk.pcpartpicker.com/list/2ghntJ/by_merchant/
Video Card: Gigabyte - GeForce GTX 1060 6GB 6GB Xtreme Gaming Video Card (£290.20 @ BT Shop)
Total: £290.20
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-06-25 05:56 BST+0100
PCPartPicker part list:
https://uk.pcpartpicker.com/list/Qr9bD8
Price breakdown by merchant: https://uk.pcpartpicker.com/list/Qr9bD8/by_merchant/
Video Card: Asus - Radeon RX 580 8GB ROG STRIX Video Card (£299.99 @ Amazon UK)
Total: £299.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-06-25 05:57 BST+0100