Actually both E11+ from Ebang and T3 from Innosilicon at 10nm both outperform the Bitmain S15 in efficiency, 48W/TH and 45W/TH. Bitmain is around 50-58W/TH I believe?
And reading some reviews it is a very unstable and unreliable machine.
So far only Bitmain and GMO have attempted 7nm tech. GMO was a total failure, as efficiency was close to 16nm. Only Bitmain came close but with a very unreliable chip.
For now I'm still running my S9's. It's not worth the investment risk yet to upgrade with what is available in the market.
Hopefully they will improve but in these market conditions I seriously doubt it.
And at 16nm the MicroBT M10 is far more efficient than the S9 also at 16nm, so what gives? This was the same guy that used to work with Bitmain so why such difference? If MicroBT can switch to a smaller node, it should take over the lead in my opinion. Unless Braiins OS can break thru the efficiency of the S15 as well as it did to the S9...
Also if the 7nm asic Bitmain uses is unreliable, what is being used in the S15 that some people here have bought and are using at this very moment?