ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH

[suchmoon]

My S5 lost half its hashrate today. Its been about 8 hrs of reduced cycle.  This is my first bitcoin miner.  How should I approach troubleshooting? 

Switch the power supply off. Count to 20. Switch it on.

If this doesn't help you might want to try another PSU, try powering one blade at a time, swap controller cables, swap controller ports.

It`s not a PSU issue, i have 2 s5 on 2 different PSU A 750w and a 1000W, and yes they drop to half speed alot ramdomly, ( NOT OC`ed ), sometime after 10-20 mins they will go back up to full speed, sometime not, and sometime totally freeze up and need a PSU reset.

i would have to assume it`s a firmware bug

It might be in your case, but I've had random issues on one unit with "x", "-", blades disappearing, mining sporadically stopping - all went away after replacing the PSU. Worth a try if nothing else helps.

[1714808949]

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[1714808949]

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[Rabinovitch]

I have replaced a PSU with Corsair RM1000 (80+ Gold). Now the power consumption at the wall is less (662-666 Wt), and HWE has been reduced twice (from 0.027% to 0.013%). It's all after 11 hours of running, will see what happen next. 

p.s. seems that after "halt" command the power consumption is about 150 Wt...

[fullintegrity]

Just received my 3 S5's. have to say, very quick, live in NW USA and ordered last friday, (saturday in CHN) and already have. Amazing travel time imho. I went with the fed ex, as it was the lowest option. I have 2 of the 3 up and running, (i need a new psu) and they are both hashing very nicely.
Im using a 650W PSU with 1 and two 750's with another. #1=1162 GHS, #2=1154 GHS averages.
can we overclock these? What is the setting for overclocking?
Thanks

[dogie]

My S5 lost half its hashrate today. Its been about 8 hrs of reduced cycle.  This is my first bitcoin miner.  How should I approach troubleshooting? 

Switch the power supply off. Count to 20. Switch it on.

If this doesn't help you might want to try another PSU, try powering one blade at a time, swap controller cables, swap controller ports.

It`s not a PSU issue, i have 2 s5 on 2 different PSU A 750w and a 1000W, and yes they drop to half speed alot ramdomly, ( NOT OC`ed ), sometime after 10-20 mins they will go back up to full speed, sometime not, and sometime totally freeze up and need a PSU reset.

i would have to assume it`s a firmware bug

on first gen firmware or Jan 7 firmware?
It happened to me on first gen, not much or very rarely on jan 7 firmware.

Yeah the latest firmware pulled out the majority of the bugs in relation to blade dropping but it seems not all of them. Recommended to upgrade to the latest if you're not already on it.

[dogie]

I have replaced a PSU with Corsair RM1000 (80+ Gold). Now the power consumption at the wall is less (662-666 Wt), and HWE has been reduced twice (from 0.027% to 0.013%). It's all after 11 hours of running, will see what happen next. 

p.s. seems that after "halt" command the power consumption is about 150 Wt...

That's actually rather high for a stock S5, they're usually in the 580-600W at the wall territory. Have you got anything else on the PSU?

[mrc_spot]

Antminer S5 for sale used less than 15 days
Location: Mumbai
Sale for Cash or BTC
Pickup from my Place

If Interested PM me with your Price

[Rabinovitch]

Not the right place for trading...

[stonebone]

Have my two S5 up and running with overclocking stable so far. Both are connected to a CX750M PSU each.
Optimal overclocking settings (Frequency) has to be determined for each unit seperatly with try and error.

I have now one running at Freq 400 resulting in 1.3TH, the other one runs at Freq 393.75 resulting in 1.26TH.

What I figured out is, that you should look out for the HW error rate. As long as it's in the 0.0xxx% range, it's ok. As soon as the HW error rate reaches 0.xxx or higher, the Hash rate drops.
So in my case, when I set the Freq to 400 on my second S5, the Hash rate drops from 1.26 to 1.23 while the HW error rate climbs from e.g. 0.0376 to 0.2135.
And it gets worse the higher I set the Freq.
Of course you have to watch temperatures, which is in my case not a problem, running cool at 45/48 with Fan at 3240 rpm in ambient temp of 16C (loud yes, but in the basement so I don't care).

So my advice for overclocking: I would start with a Freq of 375, let it run for about an hour and monitor temp, hash rate and HW errors. If all is fine, go one step higher etc. until you see a drop in the hash rate along with the above explained HW error rate (or your temp goes through the roof).

Hope this helps.

[SargeR33]

Have my two S5 up and running with overclocking stable so far. Both are connected to a CX750M PSU each.
Optimal overclocking settings (Frequency) has to be determined for each unit seperatly with try and error.

I have now one running at Freq 400 resulting in 1.3TH, the other one runs at Freq 393.75 resulting in 1.26TH.

What I figured out is, that you should look out for the HW error rate. As long as it's in the 0.0xxx% range, it's ok. As soon as the HW error rate reaches 0.xxx or higher, the Hash rate drops.
So in my case, when I set the Freq to 400 on my second S5, the Hash rate drops from 1.26 to 1.23 while the HW error rate climbs from e.g. 0.0376 to 0.2135.
And it gets worse the higher I set the Freq.
Of course you have to watch temperatures, which is in my case not a problem, running cool at 45/48 with Fan at 3240 rpm in ambient temp of 16C (loud yes, but in the basement so I don't care).

So my advice for overclocking: I would start with a Freq of 375, let it run for about an hour and monitor temp, hash rate and HW errors. If all is fine, go one step higher etc. until you see a drop in the hash rate along with the above explained HW error rate (or your temp goes through the roof).

Hope this helps.

Do you monitor power consumption? What differences have you noticed? Would just like to see if overclocking is consistent across the board between units or if each unit operates at a great difference.

[stonebone]

Have my two S5 up and running with overclocking stable so far. Both are connected to a CX750M PSU each.
Optimal overclocking settings (Frequency) has to be determined for each unit seperatly with try and error.

I have now one running at Freq 400 resulting in 1.3TH, the other one runs at Freq 393.75 resulting in 1.26TH.

What I figured out is, that you should look out for the HW error rate. As long as it's in the 0.0xxx% range, it's ok. As soon as the HW error rate reaches 0.xxx or higher, the Hash rate drops.
So in my case, when I set the Freq to 400 on my second S5, the Hash rate drops from 1.26 to 1.23 while the HW error rate climbs from e.g. 0.0376 to 0.2135.
And it gets worse the higher I set the Freq.
Of course you have to watch temperatures, which is in my case not a problem, running cool at 45/48 with Fan at 3240 rpm in ambient temp of 16C (loud yes, but in the basement so I don't care).

So my advice for overclocking: I would start with a Freq of 375, let it run for about an hour and monitor temp, hash rate and HW errors. If all is fine, go one step higher etc. until you see a drop in the hash rate along with the above explained HW error rate (or your temp goes through the roof).

Hope this helps.

Do you monitor power consumption? What differences have you noticed? Would just like to see if overclocking is consistent across the board between units or if each unit operates at a great difference.

Sorry, not at the moment, as I am currently only after maximizing overall Hash Rate. But will do shortly, as I have to move around some PSU's because I'm expecting a couple of SP20's to be added to the HW zoo. Will post when I have some figures, probably in 1 to 2 weeks.

[netcoingeek]

I think I found my limit. I have an s5 running 337.5 with only 4 hw for 24hr period. It's hashing at 1.1Th/s but sometimes it dips to just under 1Th/s. Why is that? Is it due to power irregularity? Also, at these settings to he temps are 66 and 68. I know that is high for the miner but I'm not getting hw errors. So I think this is stable. But the temps. I keep reading that the miner needs to be below 60. Is that due to instability and hardware errors. I once thought heat was related to hardware errors but with this discovery it is inconclusive. So, all you really knowledgeable people out there, is is safe to rum at or below 68c? I have a push pull fan system and have replaced the stock fan. It's not quiet, in fact, I have to make another fan changeout before the week is over. This fan setup is too loud for the fam.

When I make the can switch I'm not going to be at 1.1Th/s but I would like to be close. I'll be watching the temps and if I'm stable and I can run the miner in the 60's then I could get a few more hashed out of it.

[SargeR33]

I think I found my limit. I have an s5 running 337.5 with only 4 hw for 24hr period. It's hashing at 1.1Th/s but sometimes it dips to just under 1Th/s. Why is that? Is it due to power irregularity? Also, at these settings to he temps are 66 and 68. I know that is high for the miner but I'm not getting hw errors. So I think this is stable. But the temps. I keep reading that the miner needs to be below 60. Is that due to instability and hardware errors. I once thought heat was related to hardware errors but with this discovery it is inconclusive. So, all you really knowledgeable people out there, is is safe to rum at or below 68c? I have a push pull fan system and have replaced the stock fan. It's not quiet, in fact, I have to make another fan changeout before the week is over. This fan setup is too loud for the fam.

When I make the can switch I'm not going to be at 1.1Th/s but I would like to be close. I'll be watching the temps and if I'm stable and I can run the miner in the 60's then I could get a few more hashed out of it.

What is the ambient temp? Usually target temps/manufacturer ratings are provided at ambient temps if 18 to 20c. My S3 miner is designed to run at 30 odd degrees. Thanks to summer, it runs at around 47.

[PatMan]

Can someone tell me where the cgminer.conf file is on these things? I'm going blind.....

[fr4nkthetank]

My S5 lost half its hashrate today. Its been about 8 hrs of reduced cycle.  This is my first bitcoin miner.  How should I approach troubleshooting? 

Switch the power supply off. Count to 20. Switch it on.

If this doesn't help you might want to try another PSU, try powering one blade at a time, swap controller cables, swap controller ports.

It`s not a PSU issue, i have 2 s5 on 2 different PSU A 750w and a 1000W, and yes they drop to half speed alot ramdomly, ( NOT OC`ed ), sometime after 10-20 mins they will go back up to full speed, sometime not, and sometime totally freeze up and need a PSU reset.

i would have to assume it`s a firmware bug

It's odd. I went from Nicehash and rebooting every few hours to ghash and once a day reboots to f2pool and 9 days uptime straight. Could be pool related.

s5 has issues apparently when mining low difficulty coins, so on nicehash it can cause problems

[netcoingeek]

I think I found my limit. I have an s5 running 337.5 with only 4 hw for 24hr period. It's hashing at 1.1Th/s but sometimes it dips to just under 1Th/s. Why is that? Is it due to power irregularity? Also, at these settings to he temps are 66 and 68. I know that is high for the miner but I'm not getting hw errors. So I think this is stable. But the temps. I keep reading that the miner needs to be below 60. Is that due to instability and hardware errors. I once thought heat was related to hardware errors but with this discovery it is inconclusive. So, all you really knowledgeable people out there, is is safe to rum at or below 68c? I have a push pull fan system and have replaced the stock fan. It's not quiet, in fact, I have to make another fan changeout before the week is over. This fan setup is too loud for the fam.

When I make the can switch I'm not going to be at 1.1Th/s but I would like to be close. I'll be watching the temps and if I'm stable and I can run the miner in the 60's then I could get a few more hashed out of it.

What is the ambient temp? Usually target temps/manufacturer ratings are provided at ambient temps if 18 to 20c. My S3 miner is designed to run at 30 odd degrees. Thanks to summer, it runs at around 47.

Ambient temps are about 71F. Not sure the c conversion. It's not summer where I am but it's not super cold and the floor where the miner is never dips below 71F and sometimes it goes to 76F but not lately. Another complaint from the fam, upstairs is too warm. But now that is 71F I think it will be just fine. We like to live around 72F anyways.

[KeezAZA]

What is the idea around the static blades on the S5 fan?
I read that it should direct the air flow to some extent. These blades have a twisting effect.
I am trying to drop the dbs of the fan with an extra pull fan, but to no avail. S5 fan does not drop below 3680 RPM.
Deta fans and Silverstone fans will take 6-8 weeks to reach me.

[dogie]

What is the idea around the static blades on the S5 fan?
I read that it should direct the air flow to some extent. These blades have a twisting effect.
I am trying to drop the dbs of the fan with an extra pull fan, but to no avail. S5 fan does not drop below 3680 RPM.
Deta fans and Silverstone fans will take 6-8 weeks to reach me.

You'll get different answers on this but one of the simpler ones is it increases static pressure per W.

[stonebone]

Can someone tell me where the cgminer.conf file is on these things? I'm going blind.....

It's in /config/cgminer.conf

Cheers

[dogie]

I think I found my limit. I have an s5 running 337.5 with only 4 hw for 24hr period. It's hashing at 1.1Th/s but sometimes it dips to just under 1Th/s. Why is that? Is it due to power irregularity? Also, at these settings to he temps are 66 and 68. I know that is high for the miner but I'm not getting hw errors. So I think this is stable. But the temps. I keep reading that the miner needs to be below 60. Is that due to instability and hardware errors. I once thought heat was related to hardware errors but with this discovery it is inconclusive. So, all you really knowledgeable people out there, is is safe to rum at or below 68c? I have a push pull fan system and have replaced the stock fan. It's not quiet, in fact, I have to make another fan changeout before the week is over. This fan setup is too loud for the fam.

When I make the can switch I'm not going to be at 1.1Th/s but I would like to be close. I'll be watching the temps and if I'm stable and I can run the miner in the 60's then I could get a few more hashed out of it.

1) What power supply make and model are you running?
2) Are you seeing the varying hashrate on the S5's status page or your pool's status page?
3) What pool is it at?
4) Please can you provide a screenshot of the S5's status page?

Temps are best kept under 60C but its not a "its going to blow up" situation if below 70C. You may shorten the lifetime of your S5 by running it that hot however. Hardware errors shouldn't change appreciably between 60 or 70C either.

[KeezAZA]

At what speeds are your fans running at 350mhz?
I am currently doing 4080rpm @ 56C with the stock S5 fan. Trying to find a decent exhaust fan to low temps for find an alternative cooling method.
Vertically standing i drop temp by 1C average.

I must say I have a new found respect for the S1 fan with its noise levels.