Bitmain has shipped finally the Z9 Big which does 42ksol and has 2 modes: Balance and Turbo .
Turbo allows you to get 49-50k sols while balance gives you closer to stock range of 42k-44ksol.
I have tried to go into the cgminer.conf files and edit the over clock over 550 but the firmware will not allow you to go past this mark. Im guessing this is written inside cgminer? Or perhaps the whole firmware itself, considering its all open source, maybe we can figure out a way to get around this and modify this so we can go over 550mhz because this machine has a lot more capability than what its mining .
Ideas?
https://github.com/bitmaintech/cgminerhttps://service.bitmain.com/support/download?product=Antminer%20Z9