Just found a 600W OCZ PSU for £50 to power my rig:
CPU: FX 8320
GPU: GTX 770
Won't be doing overclocking except tweaking the GPU.
http://www.amazon.co.uk/OCZ-OCZ600MXSP-UK-ModXStream-Power-Supply/dp/B001GLFD54/ref=sr_1_1?ie=UTF8&qid=1394000636&sr=8-1&keywords=ocz+600w
CPU: FX 8320
GPU: GTX 770
Won't be doing overclocking except tweaking the GPU.
http://www.amazon.co.uk/OCZ-OCZ600MXSP-UK-ModXStream-Power-Supply/dp/B001GLFD54/ref=sr_1_1?ie=UTF8&qid=1394000636&sr=8-1&keywords=ocz+600w