I really like the firmware, no complaints works very well. Job well done to dev team. Only problem is, and I'm no mathematician but dev fee seems much higher than 1.5%. Before taking steps to mass deploy, I'll need to figure that out.
It is really easy to calculate use a pool like viabtc.com
do it right after a diff jump is set and use pps+
you get a guaranteed payment of 0.00004156 a day
"Daily Yield: ≈0.00004156 BTC Per TH/s (≈PPS 97.26%)"
so 2x s9's without s9 firmware mods for a day
then 2x s9's with s9 firmware mod for a day
also check power used each way.
come back with the numbers.
I would use mid setting bitmain firmware that gives about 13500 th and 1275 watts 94 watts a th
this guy should do 17000gh and 1400 watts = 82 watts a th if you get this and then lose 2% your eff would be 84 watts
you coin earned should be 34 x 0.00004156 x .98 = 0.0013847 in a day using 24 x 2899 = 67.2 kwatts
vs 27 x 0.00004156 = 0.00112212 BTC in a day using 34 x 2700 = 61.2kwatts
at a 5 cent number for power the new firmware should mean you spend 3.36 a day and earn 4.91 a profit of 1.55 for 2 s9's
for bitmain middle speed 3.06 for power earning 3.98 a profit of 92 cents for 2 s9's