But how long would ROI take? And what price level would BTC have to stay at?
As joker_josue the person you can look at things a certain way, as joker_josue the mining company with investors and possibly banks behind you doing the financing you have to take a different view. BTC being $90000+ gives a certain answer if ti drops to the $75000 level does that answer change? It if goes to $125000 but power costs go up 30% what else changes?
And so on.
If I had the space and spare power at the moment I would be getting a 21xp. Because it's just me. Writing a business plan to a bank to get a bunch of them would be difficult.
-Dave
There is no doubt that doing things in a personal context is very different from doing things in a business context.
Of course, the ROI would take at least a year and a half, that is if the price of BTC remains above $90k.
Even so, I wouldn't buy that kind of equipment right now. My energy costs don't make up for the work involved. It's a shame because I would like it, but it's not worth it.