Ugh. 10 hours in and Ant1 fell to 411Gh at 218 and Ant2 fell below 400Gh as expected. I wish Bitmaintech would include an option to auto-restart in the firmware. Thinking about creating a small cronjob to do just that...
try setting them to 212.5 freq
your dc to dc convertor gets too warm and your hash rate drops.
Frankly anyone going above and beyond 212.5 on batches 1 to 3 is going to be sorry in about 6 weeks.
If you want higher freq the 212.5 you will need a custom cooling solution for the dc to dc part.
my guess would be a heat sink on it and a fan directly on it blowing air out of a hole drilled into the case. or set the freq to 212.5
still hoping to do a pencil mod with my next 2 coming in.
These s-3's will be a world beater at freq 200 or 206.25 with a pencil mod under volt. maybe under .6 watts a hash say .58 watts