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1  Bitcoin / Mining support / Re: undervolt antminer s3 on: February 12, 2015, 04:43:53 PM
Quote from: neegeeboo on February 08, 2015, 06:29:09 AM
Quote from: valtic on January 19, 2015, 07:05:40 PM
success undervolt ant s3+ 0.63j/gh  .68v on my digital tester

305 gh
freq 150
config voltage 065
new firmware

hw .003 30ment. idle

https://bitcointalk.org/index.php?topic=671189.new#new

Has anyone else tried this and had the same success?

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

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

https://bitcointalk.org/index.php?topic=671189.msg10214088#msg10214088
https://bitcointalk.org/index.php?topic=671189.msg10222598#msg10222598
2  Bitcoin / Hardware / Re: ANTMINER S3+ Discussion and Support Thread 0.24$/G Free Ocean Shipping 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

https://i.imgur.com/mxxI2t6.png
https://i.imgur.com/Zw3El3U.png
https://i.imgur.com/VL9AGvu.png
https://i.imgur.com/5oGshqw.png
3  Bitcoin / Hardware / Re: ANTMINER S3+ Discussion and Support Thread 0.24$/G Free Ocean Shipping 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
4  Bitcoin / Mining support / Re: undervolt antminer s3 on: January 19, 2015, 07:05:40 PM
success undervolt ant s3+ 0.63j/gh  .68v on my digital tester

305 gh
freq 150
config voltage 065
new firmware

hw .003 30ment. idle

https://bitcointalk.org/index.php?topic=671189.new#new
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