Re: ANTMINER S5: The New Standard, 0.51J/G, 1155GH, Jan 8th shipping [Sales Open]
The S5 has some serious overclocking potential! 1.3TH seems to not be a problem and 1.4TH may be possible. (and its likely that efficiency will not change significantly)
With cold enough air intake (-7C) I could achieve 412.5MHz for around 1.36TH, but going beyond i lost hashrate even with lots of cold air, showing a limit at 12V.
I've actually switched the fan to 5V w/o PWM and with 10C at the intake temps stay around 62C at 375MHz/1.22TH and noise is actually very managable, just a bit louder than a maxed-out S1. but the PWM controller drives it at twice that, and is too loud for home use.