I would recommend this, If you’re looking for something a little bit cheaper than a platinum rated 1600w Corsair power supply unit, then you should check out these server PSUs. With a breakout board and some GPU power cables, you can have 1200 watts (at 240 volts) or 800 W (at 120 volts) of Platinum rated power for under £100!
Firstly, in order to build a mining rig there are a number of things to think about and parts to purchase. I have split some of these out below from my latest build. A lot of these can be swapped out for an alternative option which I will build on later.