Quote from: valtic on January 20, 2015, 07:23:01 AM

Quote from: jjiimm_64 on January 19, 2015, 07:30:13 PM

Quote from: valtic on January 19, 2015, 07:21:29 PM

i manage to undervolt my ant s3+. here is the result

stable at 305gh
freq 150
config voltage 065
HW .003 30 ment. idle
new firmware
191watts on wall i use digital corsair hx850i

Thank you for this..

however, if you change the config voltage, I doubt any change in watts at the wall. that setting has been disabled as per BITMAIN_Janet upthread just a bit.

your getting .62 watt / gh

really looking for someone to take this thing apart and see how we can reduce the actuall voltage to the chips more then just changing the freq does.

antminer s3+ undervolt

here is the better result

update new firmware
310gh
freq. 150
adv. config voltage 065
HW .003 20 ment. idle

how to drop voltage

parallel 2.2k resistor on VFB to Vout resistor

.68 for 2.2k
.75 for 6.8k

http://i.imgur.com/mxxI2t6.png
http://i.imgur.com/Zw3El3U.png
http://i.imgur.com/VL9AGvu.png
http://i.imgur.com/5oGshqw.png

Did anybody actually try undervolting their S3 with this resistor hack? Just wondering how its been working out with stability.

0.6Watts/GHS seems like a good efficencty.