I guess it depends how cheap you can get the S15s and whether you have a suitable place to do it. You will obviously need many 240VAC PDUs, 3 or 4 rack mounted network switches, multiple intake and exhaust fans and a space where noise and heat aren’t a problem. Imagine the sound of 120 shop vacs running in the same room.
I have a 4000 square foot building with 16 foot high ceilings and a single S17 and a couple GPU rigs heated the entire building through a Minnesota winter last year. You will have some major heat to deal with. There is also the problem of getting over 800 amps of 240VAC power so hopefully you have that covered.
Also, don’t use cryptocompare.com since their calculators aren’t accurate. I have to ask, who is paying for this much power? Even with a really good industrial rate, it would cost $250-300 per day.
