Ok my 2 have been running side by side on 1 x Bitmain PSU and the new one is not wanting to be turned up to 750 like my old one... the hash just dropped off to zero within minuets... had to back it off to 600 the creaped it up to 675.. where its pulling 14.8 sols... could it be power that is not allowing it to be at 750?? il put it on its own PSU and see if it will run 750 ?.....
I think, each unit has slightly different OC ability, so one may run fine at 750, another may do only 700. That's my experience.
I agree there buddy.. i just found the sweet spot on the new one and its 681 @ 15.1 sols