4100 BTC, but 1628 came from one order of at least 200 machines.
the rest-2472 BTCor ~300 machines. Total maybe about 500 S7
so bump to 600 this makes 500 to 600 as a fair estimate.
and 600 x 5th = 3ph in sales give or take 500th
3ph if my maths is correct is less than 1% of the hash rate for bitcoins. So assuming that nobody is replacing their old gear with S7s and they just leave all their equipment on and that everybody is mining bitcoins with their new S7s then that would only be a 1% increase in the difficulty? That's way better than what I was expecting.
the problem is bitmaintech self mines. So 1 s-7 uses the same power as 2 s-5's
you can bet dollars to donuts that they are swapping the s-7 for the s-5 and have been doing it for a month in their mines.
so we are having hash jump a lot. so also realize that bitmaintech and bitfury can add 100ph if they want and don't since the have no need to get into an arms war.