Topic: [GUIDE] Undervolt antminer s1 [1.19W/GH at the wall] - page 5. (Read 69499 times)
this is very good, can we do the same to S3
i currently have 6 s1's running at 200gh/s at 400w each powered by 2 corsair AX1200i's and its getting to the point where I'm not making much, i probably won't make anything after this next jump in diff unless BTC goes back up to 600.
Im looking to get these guys down to 200w each, and get all 6 on 1 psu.
What appears to be the best config for them running around 200w? the Corsairs are a beast and although rated at 1200 I've run some of them at 1300 and 1400 for an extended period of time with no issues. I had to put the AX1500i that i have my 4 overlocked S3s connected to on its own circuit breaker. but then again at the price they are they should be crazy good pus's
i want to drop the voltage down to .85. it looks like some people had some good luck getting around 150-160 ghs here. what freq are people using in this area.
and i haven't seen much talk of dropping the voltage down to .75 what kind of results are people getting there.
Im looking to get these guys down to 200w each, and get all 6 on 1 psu.
What appears to be the best config for them running around 200w? the Corsairs are a beast and although rated at 1200 I've run some of them at 1300 and 1400 for an extended period of time with no issues. I had to put the AX1500i that i have my 4 overlocked S3s connected to on its own circuit breaker. but then again at the price they are they should be crazy good pus's
i want to drop the voltage down to .85. it looks like some people had some good luck getting around 150-160 ghs here. what freq are people using in this area.
and i haven't seen much talk of dropping the voltage down to .75 what kind of results are people getting there.
Just an update, i undervolted 5 of my S1'a and left 1 at the overlocked speed and was able to get all 6 on the single psu. the undervalued one all average around 145 gh at about 170 watts at the wall.
I did a couple today just as a test as it's now at about the crossover point where profitability is the same underclocked as overclocked. I soldered a 8.75k in parallel with R3 to bring it down to 0.85V, and changed the fan for a Helix 120mm since I have a pile of them from my H220s.
Between two units I dropped from 843W at the wall (on an off brand 850W supply) and ~405GH/s to 341W and 281GH/s. They're super quiet as well, though I'm not yet convinced that with low enough ambient you couldn't just run them without a fan.
Between two units I dropped from 843W at the wall (on an off brand 850W supply) and ~405GH/s to 341W and 281GH/s. They're super quiet as well, though I'm not yet convinced that with low enough ambient you couldn't just run them without a fan.
that is pretty bad ass right ? the first thing i noticed was the noise level reduction on the s1. before my living room sounded like it had a mini-jet taking off, now it's very silent and does not produce as much heat. i am tempted to buy those goofy little heatsinks for the chips, but i know it probably is not required. so i don't think i will be dumping anymore $ into the s1.
mr. teal, you may know better, but is it possible to daisy chain the s1's ? say if someone has a antminer with a bad controller card, can you splice it into an antminer that has a good controller card and have both units run from it ? thanks
Once the S1 upgrade kits get out we should see people figuring out how to run a lot of boards with one controller.
I did a couple today just as a test as it's now at about the crossover point where profitability is the same underclocked as overclocked. I soldered a 8.75k in parallel with R3 to bring it down to 0.85V, and changed the fan for a Helix 120mm since I have a pile of them from my H220s.
Between two units I dropped from 843W at the wall (on an off brand 850W supply) and ~405GH/s to 341W and 281GH/s. They're super quiet as well, though I'm not yet convinced that with low enough ambient you couldn't just run them without a fan.
Between two units I dropped from 843W at the wall (on an off brand 850W supply) and ~405GH/s to 341W and 281GH/s. They're super quiet as well, though I'm not yet convinced that with low enough ambient you couldn't just run them without a fan.
that is pretty bad ass right ? the first thing i noticed was the noise level reduction on the s1. before my living room sounded like it had a mini-jet taking off, now it's very silent and does not produce as much heat. i am tempted to buy those goofy little heatsinks for the chips, but i know it probably is not required. so i don't think i will be dumping anymore $ into the s1.
mr. teal, you may know better, but is it possible to daisy chain the s1's ? say if someone has a antminer with a bad controller card, can you splice it into an antminer that has a good controller card and have both units run from it ? thanks
Hi i want to give a big thank you to the OP of this thread for his step by step tutorial and for his hard work in providing an extended lifespan to the beast of it's time the s1. with that said, i was wondering if OP is currently mapping out the s3 and looking into the possibility of this being done also (when difficulty catches up to earning potential) ?
i currently have 6 s1's running at 200gh/s at 400w each powered by 2 corsair AX1200i's and its getting to the point where I'm not making much, i probably won't make anything after this next jump in diff unless BTC goes back up to 600.
Im looking to get these guys down to 200w each, and get all 6 on 1 psu.
What appears to be the best config for them running around 200w? the Corsairs are a beast and although rated at 1200 I've run some of them at 1300 and 1400 for an extended period of time with no issues. I had to put the AX1500i that i have my 4 overlocked S3s connected to on its own circuit breaker. but then again at the price they are they should be crazy good pus's
i want to drop the voltage down to .85. it looks like some people had some good luck getting around 150-160 ghs here. what freq are people using in this area.
and i haven't seen much talk of dropping the voltage down to .75 what kind of results are people getting there.
Im looking to get these guys down to 200w each, and get all 6 on 1 psu.
What appears to be the best config for them running around 200w? the Corsairs are a beast and although rated at 1200 I've run some of them at 1300 and 1400 for an extended period of time with no issues. I had to put the AX1500i that i have my 4 overlocked S3s connected to on its own circuit breaker. but then again at the price they are they should be crazy good pus's
i want to drop the voltage down to .85. it looks like some people had some good luck getting around 150-160 ghs here. what freq are people using in this area.
and i haven't seen much talk of dropping the voltage down to .75 what kind of results are people getting there.
I am thinking in about 30 days or so I will try and drop mine down lower unless the value of BTC goes back up that is.
I found the best way is to have the cat5 un plugged, then pencil the resistors until the voltage reads 0.85 volts. Blow off the pencil dust.
Lay the unit on it's side so it's easy to work on. Get some 2.5 or 3.5 reading glasses or greater.
After both sides done then plug the cat5 back in and SSH the unit and set it to 250 and record to GH/s for 1/2 hour then set to 275 and record for 1/2 hour then set to 300 and record.
Some units work better at 250 and some at 275, recheck the voltage and adjust. I got around 160-170 watts and 120-140 GH/s on 12 units. GHash is good place to test if you already mine there.
Lay the unit on it's side so it's easy to work on. Get some 2.5 or 3.5 reading glasses or greater.
After both sides done then plug the cat5 back in and SSH the unit and set it to 250 and record to GH/s for 1/2 hour then set to 275 and record for 1/2 hour then set to 300 and record.
Some units work better at 250 and some at 275, recheck the voltage and adjust. I got around 160-170 watts and 120-140 GH/s on 12 units. GHash is good place to test if you already mine there.
i currently have 6 s1's running at 200gh/s at 400w each powered by 2 corsair AX1200i's and its getting to the point where I'm not making much, i probably won't make anything after this next jump in diff unless BTC goes back up to 600.
Im looking to get these guys down to 200w each, and get all 6 on 1 psu.
What appears to be the best config for them running around 200w? the Corsairs are a beast and although rated at 1200 I've run some of them at 1300 and 1400 for an extended period of time with no issues. I had to put the AX1500i that i have my 4 overlocked S3s connected to on its own circuit breaker. but then again at the price they are they should be crazy good pus's
i want to drop the voltage down to .85. it looks like some people had some good luck getting around 150-160 ghs here. what freq are people using in this area.
and i haven't seen much talk of dropping the voltage down to .75 what kind of results are people getting there.
Im looking to get these guys down to 200w each, and get all 6 on 1 psu.
What appears to be the best config for them running around 200w? the Corsairs are a beast and although rated at 1200 I've run some of them at 1300 and 1400 for an extended period of time with no issues. I had to put the AX1500i that i have my 4 overlocked S3s connected to on its own circuit breaker. but then again at the price they are they should be crazy good pus's
i want to drop the voltage down to .85. it looks like some people had some good luck getting around 150-160 ghs here. what freq are people using in this area.
and i haven't seen much talk of dropping the voltage down to .75 what kind of results are people getting there.
This was super helpful, i can't believe how quickly diff is going up, crazy. i feel like my s3's are going to be obsolete next week.
I did a couple today just as a test as it's now at about the crossover point where profitability is the same underclocked as overclocked. I soldered a 8.75k in parallel with R3 to bring it down to 0.85V, and changed the fan for a Helix 120mm since I have a pile of them from my H220s.
Between two units I dropped from 843W at the wall (on an off brand 850W supply) and ~405GH/s to 341W and 281GH/s. They're super quiet as well, though I'm not yet convinced that with low enough ambient you couldn't just run them without a fan.
Between two units I dropped from 843W at the wall (on an off brand 850W supply) and ~405GH/s to 341W and 281GH/s. They're super quiet as well, though I'm not yet convinced that with low enough ambient you couldn't just run them without a fan.
246W @275 averaging around 141GH/s. Isn't that wattage high? THat's messed up. I need to redo it.
I have 9 S1's running all at 275 MHz. My watts at the wall went from @375 watts to 170 watts and they hash at 135-140GHs. I pay .125 per KW, so I spend @.51 per day on electric with the miner making @$1.50 a day at today's difficulty and BTC value. 
179W @275 averaging around 140GH/s.
0.85VElapsed
18d 18h 25m 40s
148.15GH/S(5s)
140.10GH/S(avg)
402,578Accepted
74,727,110HW
1,957WU
52,743,027DiffA
98,046DiffR DiffS
182,950,239BestShare
179W @275 averaging around 140GH/s.
246W @275 averaging around 141GH/s. Isn't that wattage high? THat's messed up. I need to redo it.
can S1 undervoltage make profit?
caused now 140GH/s make $1.5/day
caused now 140GH/s make $1.5/day
all depends on you power cost. at 15 cents a kwatt and burning 185 watts for 140 gh it pays above the power cost.
the power cost is around 67 cents a day
for 15 cents a kwatt.
so 1.50 - .67 = 83 cents a day profit.
do not forget that in 50 days or so it will be a helpful little heater
can S1 undervoltage make profit?
caused now 140GH/s make $1.5/day
caused now 140GH/s make $1.5/day
Now my antminer S1 ran again.
trouble caused in previous I use VR multitune 100K, several VRs shift value below 2.8K.
After I replace with 10K Multitune and set to 2.85K. My S1 work..
trouble caused in previous I use VR multitune 100K, several VRs shift value below 2.8K.
After I replace with 10K Multitune and set to 2.85K. My S1 work..
After 4 days run in undervoltage, my antminer S1 stop hashing.. this is screenchoot antminer :
anyone here suggest me to repair it?
anyone here suggest me to repair it?
many thanks for this guide https://bitcointalksearch.org/topic/guide-undervolt-antminer-s1-119wgh-at-the-wall-526060
I use Multiturn potensio for undervolt. https://bitcointalksearch.org/topic/m.7586392
SSH I follow : https://bitcointalksearch.org/topic/m.7828393
I choose Freq (275 MHz):
option 'freq_value' '0A81' #275M
option 'chip_freq' '275'
option 'timeout' '45'
before undervolt : 454W from wall
after undervolt : 222W from wall
this is result Ghs my S1 antminer.
I use Multiturn potensio for undervolt. https://bitcointalksearch.org/topic/m.7586392
SSH I follow : https://bitcointalksearch.org/topic/m.7828393
I choose Freq (275 MHz):
option 'freq_value' '0A81' #275M
option 'chip_freq' '275'
option 'timeout' '45'
before undervolt : 454W from wall
after undervolt : 222W from wall
this is result Ghs my S1 antminer.
After 4 days run in undervoltage, my antminer S1 stop hashing.. this is screenchoot antminer :
anyone here suggest me to repair it?
anyone here suggest me to repair it?
many thanks for this guide https://bitcointalksearch.org/topic/guide-undervolt-antminer-s1-119wgh-at-the-wall-526060
I use Multiturn potensio for undervolt. https://bitcointalksearch.org/topic/m.7586392
SSH I follow : https://bitcointalksearch.org/topic/m.7828393
I choose Freq (275 MHz):
option 'freq_value' '0A81' #275M
option 'chip_freq' '275'
option 'timeout' '45'
before undervolt : 454W from wall
after undervolt : 222W from wall
this is result Ghs my S1 antminer.
I use Multiturn potensio for undervolt. https://bitcointalksearch.org/topic/m.7586392
SSH I follow : https://bitcointalksearch.org/topic/m.7828393
I choose Freq (275 MHz):
option 'freq_value' '0A81' #275M
option 'chip_freq' '275'
option 'timeout' '45'
before undervolt : 454W from wall
after undervolt : 222W from wall
this is result Ghs my S1 antminer.
I'd like to minimize W/GH.
So far I've only tried OP's recommendation. My miners ended up at 185W @ 140 GH = 1.3 W/GH.
Has anyone underclocked even more, and what W/GH do you reach?
EDIT : See OP. He uses 0.85V but shows that 0,75V should be even more efficient. For 0.85V the resistance shall be between ~2.8kOhms and ~3kOhms. We should find out what Ohm that suits the 0.75V setting
I have 9 penciled mod down and was thinking of trying to go lower in a couple of weeks. Let me know how it works for you.So far I've only tried OP's recommendation. My miners ended up at 185W @ 140 GH = 1.3 W/GH.
Has anyone underclocked even more, and what W/GH do you reach?
EDIT : See OP. He uses 0.85V but shows that 0,75V should be even more efficient. For 0.85V the resistance shall be between ~2.8kOhms and ~3kOhms. We should find out what Ohm that suits the 0.75V setting
I tried resistance between ~2.3kOhms and ~2.6kOhms. Both my Ants run stable at around 128 GH with HW error well below 1%.
New score is 150W @ 128 GH = 1.17 W/GH
I use
#option 'freq_value' '0981' #250M
#option 'chip_freq' '250'
#option 'timeout' '56'
I suggest you try this first. If HW error is very low you can try at a higher frequency. If the HW error is high (>1%) you can try a lower frequency. List of frequency settings is in this thread.
EDIT: A bonus is silence. Fans run at only 1320 RPM, hardly noticeable, and to eliminate any vibrations I put foam under the miners.
Any guide for S3 ? 
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