Hi, thank you very much for that firmware. I did some testing with 880mV version and measured the energy consuption at the wall using energy meter. Not sure if it is super accurate, but its just for comparsion. I'm running all miners in oil, but PSU (original bitmain 1600W) are outsite and ambient temp is quite high (35C/95F during day now), therefore I'm not going to run those PSUs at 120%.
S9i (running its original autotune FW)
stock 14TH@1450W
- 675MHz 14.5TH@1530W
- 725MHz 15.6TH@1650W
- 750HHz 16.1TH@1710W - I will be running this setting, HW errors in single digits per hour
- 775MHz 16.7TH@1770W
S9 (original autotune FW, 03/2018 batch I think)
stock 13,8TH@1480W (900mV,900mV,910mV)
- 700MHz 15TH@1580W
- 725MHz 15.6TH@1650W
- 750MHz 16.1TH@1700W
Interesting thing for me is, that temperature on those S9i increased only about 1-degrees, but on S9 it is now +20C (61->81). Do you have any idea why? Does it have something to do with "TempTypeID=1a middle offset=-51"? Maybe those older boards should have different offset?
Also, will you be so kind and compile 870mV FW and put it on github? I would love to try lower voltage and higher clock speed, as I'm oil-cooling it I have no problems with overheating.
Yes I will do it later tonight or in the morning.
I noticed your s9i and s9 run the same wattage at 72MHz What is funny though I run my S9i 14th unit at 800mhz on a 1600w psu and it runs just fine without tripping the psu.