Some ASIC stats after playing around with it for a while, can most likely push it a bit further, enjoy.
Once again, this is in no way optimal conditions for the boards, with the heat dissipation surface down.
Is that in an immersion cooled environment?
Did you switch the PSU?
I am getting around the same speed at 1240W... and with 8 inactive chips....
Temps are looking good though. Is yours a May batch unit?
Also:
As you can see the chips are clocking at different speeds although they all show the same temperature.
This is most likely due to the firmware anticipating higher temperatures at the back of the unit, as you would typically see with air cooling.
The unit should be running a little more efficient (and possibly faster) if all clock speeds rise equally.