yeah the climate is good here now no overheating issues

One my best efficiency tests was this for an S9i;

15.25 TH/s 8.7 volt 3 chains, 725mhz 98 watts per TH

anything over 725mhz i started to get diminishing returns;

16.22 TH/s 8.8 volts, 775 mhz 102 watts per TH

chains on each miner are different (thanks for the junk Jihan), on another miner i noticed some chains arent pushing as much GH/s as others, but we can tweak the voltage separately. so 2 chains could have 8.8 and then the one lagging behind can be set to 8.9volt and there isn't much difference in watts but the GH/s on the chain starts to keep up with the others

i'll jack them up this weekend with some extra psu's and make 1 bleed lol