I have a few questions now.
Are my settings ok ?
Would you overclock the S5 a little bit more ?
If I underclock, should I lower the voltage of the S4 manually, and if thats the case, which is there any voltage shart somewhere?
From now on I like a lot my Bitcoin Mining experience, any other canadian fellow out there?
I am from Canada~
The free heat/cooling is pretty nice, i use low fan speed on both miners to cut on the noise.
Anyways, if you setup custom firmware on the S4 you could change the voltage, but otherwise the volt thing won't actually be applied. Apparently old S4 that were not updated still have working Volt control, it was only removed later on.
Personally i don't trust the S4 stock PSU, many people had a problem with it, so i would not overclock it further than 212, personally i run 200 or 206 and i set the volt to 0670 or 0710. I'm just being extra careful here, but since my limitation now is more watt capacity at home, i preferred to run them undervolted at 200mhz and just run extra S1's (amazing little heaters that run 100% silent and can be placed anywhere
).
For the S5 however, you could certainly overclock some. I run all mine at 393(1.29~1.3TH/s), except one that run 400(1.32TH/s+).
For S5 noise, i now run the fan at their minimum speed (2400RPM~) and just feed outdoor air to them and having 2 fans on them really help the cooling, its insane.
Thank you very much for your answer.
How are you able to control fan speed ? I searched around a bit and didnt discover anything about that except by adding a heatsink on a chip. Can you tell me more ?
Allright I wont go more than 212.5 for my S4 and will check that out. volt will stay at 72 since i readed about the s4 power supply problem.
I'll test out a better frequency for my S5 since I have a 800 watt power supply and stocked S5 are 590.
Do you know somewhere I could buy better fan for bitcoin too ? In case I want more quiet stuff if running low speed on stock fans is not enough?
Well if u i need of o good config for thoose i could maybe Help u 
