Does anyone here run their S4's on 240 volts? What setting do you use on the chip? 0375?
You mean 0735? Probably a bit too high unless you're overclocking heavily. Keep in mind that the PSU is barely sufficient for stock speeds.
I used 0720 with 200 MHz (stock 2 TH/s) and 0725 with 225 MHz (~2.25 TH/s)
No I am talking about 240 volts input. Much more efficient than 120 volts. the chips surely must be undervolted using 240.