I'd like to drop a random recommendation: The SeaSonic X-Series might be an overall cheaper choice than it seems, despite costing about twice as much as the competition.
Until 1-2 years ago, me and people I know have been using various products of "Be Quiet!" and seen them all break down within or slightly above the warranty. The exchanged ones broke down again. I've lost count, but it should've been at the very least 9 of them at a striking 100% failure rate.
SeaSonic has a seven year warranty and wastes less power. In tests I've seen extremely stable voltages even if run 100W above target output. Their cable management has served me perfectly, no comparison with what I've used before. Since I started recommending them there are five running without one failure so far.
If I had an exchange that sells SeaSonic stocks, I might be buying that. Now, I'm just buying their PSUs and recommending people to do the same until I hear of a problem.
- Tip 1: Remember that a dead PSU after warranty costs the full price of a second PSU and the time to swap it on both system downtime and admin time.
- Tip 2: Never ever buy Be Quiet. They build stuff that self-destructs.
- Tip 3: Try SeaSonic X-Series or above. Even if the rest proves a fluke, seven years of warranty speak for themselves.
I'm not a miner, so I'll leave the exact power requirement to someone else.