If may take water cooling and server powersupplies to accomplish.
That is the fun of it... coinmining by itself is very boring once it runs right.
We are at the wtf stage
I spend most all of my money on hardware, electricity is always second/third issue as a Hobby I do not expect ROI, I did in the beggining expect to get rich like everyone else.
I spent 20 30 grand on game dev machines during the 2008-2013 era No money expected, did it all for fun.
Oh I sit in campfires and laugh, blows peoples minds.
Yes, I am actually making some money mining (Ant pharm) but - I too am in it for tech aspect. Heck, for example in Nov. I spent over 5k building a RenderBeast for playing with 3D graphics (DAZ 3D & Bryce). Is fun but the Beast has maybe 150hrs on it so far and don't plan to ever make money from it. These rigs *will* eventually make money. (when we get them) As for getting rich mining - highly doubt it but at least on-track to have the pharm paid for in July.
Since the mid-1970's I've been designing industrial laser systems and know power applications, thermal and mechanical design, etc. inside & out. Hell even chip design is (limited) part of my bag so... This is a sort of a toy for me. Do I want my system asap? Sure. But for now, with a glimmer of light spotted for A1-based rigs I'm content doing what I can, where I can with useful info here to help folks that actually have their rigs. (Wish I was one...)
In that light: AMT - for the future 2.5/3TH rigs would really really be a good idea to plan on using single-voltage server supplies. eg http://www.trcelectronics.com/Meanwell/hot-swappable-rcp1000.shtml They also have 2 & 3kw modules.
Reasonably inexpensive and up to 6/8kw in a 1U high rack. If +5vdc is needed then derive it in the system with SMT or tab POL regulators fed from that single supply buss. Would make the PSU issues pretty much go away.
We now resume our normal programming.