There was a huge drop on price for S7 in the last 24 hours or so , do we know the reason for it?
Next diff change will be about 20% which will practically mean the S7 will not survive halving at current BTC/USD price, in other words it will never ROI.
this is assuming the diff will stay the same, which is very unlikely.
halving will bring diff down, or everybody will mine at a loss.
Yes very probably the difficulty will drop after halving when old tech gear will get shut down. However it seems some new low consumption technology is being plugged in which won't have to be shut down after halving and it's share on total hashrate will be so high the diff drop will be within single digit percent number. Anyway will be fun to watch.