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

[PsychoticBoy]

If someone has some spare S5 coupons I would like to have 1

My Bitmain account is the same as the one I use here.

Thanks in advance

[opentoe]

I'm wondering how high that temperature could of went to.

80c. What fans you running?

All stock. And I just read other's are having the same problem. Temps over 80c and keep climbing. Not good. If I wasn't home I'd have two toasters.

Remember, they weren't mining or even connected to the pool at this point. The temps just started rising past 80c without shutting down. The firmware seems not to shut the rig down when it is over 80c. That really needs to be fixed.

Well that goes against everything I've tested, pulled the ethernet and nothing exciting happens. And I've previously tested the 80C limit, it 'freezes' and stops mining.

It doesn't need to be mining. Once the pool drops or connection drops, the fan slows down and the temps keep rising. I can keep my iR temp sensor pointed at a certain spot on one of the fins and it will gradually get hotter and hotter.

[Biodom]

I'm wondering how high that temperature could of went to.

80c. What fans you running?

All stock. And I just read other's are having the same problem. Temps over 80c and keep climbing. Not good. If I wasn't home I'd have two toasters.

Remember, they weren't mining or even connected to the pool at this point. The temps just started rising past 80c without shutting down. The firmware seems not to shut the rig down when it is over 80c. That really needs to be fixed.

Well that goes against everything I've tested, pulled the ethernet and nothing exciting happens. And I've previously tested the 80C limit, it 'freezes' and stops mining.

It doesn't need to be mining. Once the pool drops or connection drops, the fan slows down and the temps keep rising. I can keep my iR temp sensor pointed at a certain spot on one of the fins and it will gradually get hotter and hotter.

interesting.. I haven't seen anything like this, usually pool just switches over, unless it is nice/westhash, which never worked properly for me on S5.
Use the power (watt) meter. If you see that power usage drops, then nothing to worry about. If, however, it is still drawing regular power after pool disconnect or connection disconnect, then you have a problem miner. Solution: situate an external fan behind the miner (I use Vornado). It helps with air citculation.

[scrawford84]

anyone else interested pm me with offers for my S5 coupon.

[opentoe]

I'm wondering how high that temperature could of went to.

80c. What fans you running?

All stock. And I just read other's are having the same problem. Temps over 80c and keep climbing. Not good. If I wasn't home I'd have two toasters.

Remember, they weren't mining or even connected to the pool at this point. The temps just started rising past 80c without shutting down. The firmware seems not to shut the rig down when it is over 80c. That really needs to be fixed.

Well that goes against everything I've tested, pulled the ethernet and nothing exciting happens. And I've previously tested the 80C limit, it 'freezes' and stops mining.

It doesn't need to be mining. Once the pool drops or connection drops, the fan slows down and the temps keep rising. I can keep my iR temp sensor pointed at a certain spot on one of the fins and it will gradually get hotter and hotter.

interesting.. I haven't seen anything like this, usually pool just switches over, unless it is nice/westhash, which never worked properly for me on S5.

I do not want to put my miner through any "testing", since I want to keep it running and not blow it up. But the temps definitely do go higher than 80c, which "should" kick in the fan to spin higher but it doesn't. If I had a test S5 to play with I can probably find a way to duplicate the results I was getting before. In my mind once it stops hashing the temps drop, fan slows down because of that. I wish I could explain it with some proof, but I can't since I have no data to prove the temps went that high.

So when it hits 80c what is it supposed to do? Shut down? Stop hashing? Lock up?

[MyRig]

Trying to replicate it now.  Will update you!

[sidehack]

If you pull the blue wire from the fan connector your fan should stay at full speed full-time. If you're going to operate remotely anyway and nobody's home to hear it be super loud forever, that's a good way to make sure it also stays maximally cool.

[philipma1957]

anyone else interested pm me with offers for my S5 coupon.

how many do you have and what  amount are they for?

[HolgerDansk]

Remember, they weren't mining or even connected to the pool at this point. The temps just started rising past 80c without shutting down. The firmware seems not to shut the rig down when it is over 80c. That really needs to be fixed.

Well that goes against everything I've tested, pulled the ethernet and nothing exciting happens. And I've previously tested the 80C limit, it 'freezes' and stops mining.

I agree - it doesn't make sense.  My S3's properly honored that 80C safety shutoff.  But on my pair of S5's, it does not shutoff over 80C.  BTW, the miners really do heat up and it's not just an errant report from the firmware.

A few weeks ago when Ghash went down, my Nicehash limit for return value wasn't met and so it stopped hashing (no rollover) and I did catch this screenshot.

[MyRig]

Thank you for the screenshot

Remember, they weren't mining or even connected to the pool at this point. The temps just started rising past 80c without shutting down. The firmware seems not to shut the rig down when it is over 80c. That really needs to be fixed.

Well that goes against everything I've tested, pulled the ethernet and nothing exciting happens. And I've previously tested the 80C limit, it 'freezes' and stops mining.

I agree - it doesn't make sense.  My S3's properly honored that 80C safety shutoff.  But on my pair of S5's, it does not shutoff over 80C.  BTW, the miners really do heat up and it's not just an errant report from the firmware.

A few weeks ago when Ghash went down, my Nicehash limit for return value wasn't met and so it stopped hashing (no rollover) and I did catch this screenshot.

[dogie]

Remember, they weren't mining or even connected to the pool at this point. The temps just started rising past 80c without shutting down. The firmware seems not to shut the rig down when it is over 80c. That really needs to be fixed.

Well that goes against everything I've tested, pulled the ethernet and nothing exciting happens. And I've previously tested the 80C limit, it 'freezes' and stops mining.

I agree - it doesn't make sense.  My S3's properly honored that 80C safety shutoff.  But on my pair of S5's, it does not shutoff over 80C.  BTW, the miners really do heat up and it's not just an errant report from the firmware.

A few weeks ago when Ghash went down, my Nicehash limit for return value wasn't met and so it stopped hashing (no rollover) and I did catch this screenshot.

There is a conflict in that screenshot, a fan speed of 3600 RPM yet a high temp. At this point I'm leaning towards it reporting silly temperatures rather than reaching silly temperatures. On a 200W load, even with a 1000 RPM fan it should still be okay. Heatsink temps of 75C over heatsink temps of 50C provides DOUBLE the heat removal in a 25C ambient.

[soy]

Working with a new C1, I wanted it on another subnet to start so I set up a router, it not having an uplink, so that the C1 wouldn't hash figuring that without hashing it wouldn't get hot.  No water in its heatsinks yet.  I did connect via a laptop and started making the setup changes and it pretty quickly froze.  When I touched one of the coolant ports and found it quite hot I realized even unconnected to the internet those ASICs put out heat enough to trigger shutdown.  The C1 runs fine, no damage.

[HolgerDansk]

Remember, they weren't mining or even connected to the pool at this point. The temps just started rising past 80c without shutting down. The firmware seems not to shut the rig down when it is over 80c. That really needs to be fixed.

Well that goes against everything I've tested, pulled the ethernet and nothing exciting happens. And I've previously tested the 80C limit, it 'freezes' and stops mining.

I agree - it doesn't make sense.  My S3's properly honored that 80C safety shutoff.  But on my pair of S5's, it does not shutoff over 80C.  BTW, the miners really do heat up and it's not just an errant report from the firmware.

A few weeks ago when Ghash went down, my Nicehash limit for return value wasn't met and so it stopped hashing (no rollover) and I did catch this screenshot.

There is a conflict in that screenshot, a fan speed of 3600 RPM yet a high temp. At this point I'm leaning towards it reporting silly temperatures rather than reaching silly temperatures. On a 200W load, even with a 1000 RPM fan it should still be okay. Heatsink temps of 75C over heatsink temps of 50C provides DOUBLE the heat removal in a 25C ambient.

Ah!  I think you have landed on an issue.  Thank you.

The physical truth is, at the time of the screenshot, the fan was not at a high rpm (judging from startup/reboot speeds it was in the 300 to 500 rpm range); and the heat sink fins were too hot to keep my fingers on.  I believe the heat reported, but not the fan speed.

But that still makes me wonder why the 80c safety didn't kick in.  This also happened about 3-4 weeks before this screenshot.  That time it reported 106C, but I didn't grab a screenshot, I was freaked out by the high temp and hurried to power down and move air over them with a box fan.

[thedreamer]

Anyone do overclocking / efficiency testing on the S5's?

[Rabinovitch]

May be this will be useful for you? https://bitcointalk.org/index.php?topic=919018.msg10095258#msg10095258

[thedreamer]

May be this will be useful for you? https://bitcointalk.org/index.php?topic=919018.msg10095258#msg10095258

Thank you

[dogie]

Remember, they weren't mining or even connected to the pool at this point. The temps just started rising past 80c without shutting down. The firmware seems not to shut the rig down when it is over 80c. That really needs to be fixed.

Well that goes against everything I've tested, pulled the ethernet and nothing exciting happens. And I've previously tested the 80C limit, it 'freezes' and stops mining.

I agree - it doesn't make sense.  My S3's properly honored that 80C safety shutoff.  But on my pair of S5's, it does not shutoff over 80C.  BTW, the miners really do heat up and it's not just an errant report from the firmware.

A few weeks ago when Ghash went down, my Nicehash limit for return value wasn't met and so it stopped hashing (no rollover) and I did catch this screenshot.

There is a conflict in that screenshot, a fan speed of 3600 RPM yet a high temp. At this point I'm leaning towards it reporting silly temperatures rather than reaching silly temperatures. On a 200W load, even with a 1000 RPM fan it should still be okay. Heatsink temps of 75C over heatsink temps of 50C provides DOUBLE the heat removal in a 25C ambient.

Ah!  I think you have landed on an issue.  Thank you.

The physical truth is, at the time of the screenshot, the fan was not at a high rpm (judging from startup/reboot speeds it was in the 300 to 500 rpm range); and the heat sink fins were too hot to keep my fingers on.  I believe the heat reported, but not the fan speed.

But that still makes me wonder why the 80c safety didn't kick in.  This also happened about 3-4 weeks before this screenshot.  That time it reported 106C, but I didn't grab a screenshot, I was freaked out by the high temp and hurried to power down and move air over them with a box fan.

So the bits of information we have:

a) Status reported high temps
b) Heatsinks were too hot to keep fingers on are ~55C for aluminium, which puts chip temps not much higher.

c) Status reported high fan
d) Fan was low in reality

e) Status did not respond to these 'high' temps
f) Status previously showed 110C, but S5 still works.

From the very last one alone we could conclude that its a display / calculation issue, and the chips aren't reaching the temperature its displaying and / or the measurement isn't even what its displaying. If that type of temp sensor was 110C, the chips would have been way past the "melt into goop" region.

[Darthswan]

Anyone have any spare coupons?  Thanks in advance. 

[HolgerDansk]

Remember, they weren't mining or even connected to the pool at this point. The temps just started rising past 80c without shutting down. The firmware seems not to shut the rig down when it is over 80c. That really needs to be fixed.

Well that goes against everything I've tested, pulled the ethernet and nothing exciting happens. And I've previously tested the 80C limit, it 'freezes' and stops mining.

I agree - it doesn't make sense.  My S3's properly honored that 80C safety shutoff.  But on my pair of S5's, it does not shutoff over 80C.  BTW, the miners really do heat up and it's not just an errant report from the firmware.

A few weeks ago when Ghash went down, my Nicehash limit for return value wasn't met and so it stopped hashing (no rollover) and I did catch this screenshot.

There is a conflict in that screenshot, a fan speed of 3600 RPM yet a high temp. At this point I'm leaning towards it reporting silly temperatures rather than reaching silly temperatures. On a 200W load, even with a 1000 RPM fan it should still be okay. Heatsink temps of 75C over heatsink temps of 50C provides DOUBLE the heat removal in a 25C ambient.

Ah!  I think you have landed on an issue.  Thank you.

The physical truth is, at the time of the screenshot, the fan was not at a high rpm (judging from startup/reboot speeds it was in the 300 to 500 rpm range); and the heat sink fins were too hot to keep my fingers on.  I believe the heat reported, but not the fan speed.

But that still makes me wonder why the 80c safety didn't kick in.  This also happened about 3-4 weeks before this screenshot.  That time it reported 106C, but I didn't grab a screenshot, I was freaked out by the high temp and hurried to power down and move air over them with a box fan.

So the bits of information we have:

a) Status reported high temps
b) Heatsinks were too hot to keep fingers on are ~55C for aluminium, which puts chip temps not much higher.

c) Status reported high fan
d) Fan was low in reality

e) Status did not respond to these 'high' temps
f) Status previously showed 110C, but S5 still works.

From the very last one alone we could conclude that its a display / calculation issue, and the chips aren't reaching the temperature its displaying and / or the measurement isn't even what its displaying. If that type of temp sensor was 110C, the chips would have been way past the "melt into goop" region.

So I just ran a test, by killing my internet.  Very interesting to watch.  The fans spin slow (at an inaudible level).  The GUI seems to be stuck with the last valid stats from while hashing. 

I'm getting the feeling that the GUI only reports when the machine is actually hashing.  I watched the temps of the heatsinks rise by ~8C during the lull of no hashing (with an infrared thermometer).

After connecting the internet, and the miners quit beeping, then the GUI would report an updated status.  After the beeping stopped (internet connected) the fans also did spin up again (full rpm).

After restarting the internet, 1 miner had blades at 96C & 83C reported.  It would not start hashing again, without a reboot.  The other miner had blades at 93C & 78C reported.  Based on my infrared temp readings, both heatsinks were within 1C of each other.  This miner did start hashing again on its own, after restarting my internet connection.

Here's some absolutes I know after my test of an internet failure:
1) fan speed drop to nothing and the temperature rises during the failure
2) the windows GUI does not get updated status from the miner during the failure

So why don't the fans stay up to speed to keep the chips cooling during an internet failure? 

Beyond that, I only have assumptions (though educated guesses, they are still guesses).  It's as though the system is not monitoring its own temps during the internet failure, to adjust fan speed and maintain an operating temperature.

If I was a manufacturer, or had a miner that I didn't have to pay for, I would have let the my internet failure run for more than the 3 or 4 minutes I dared to (watching the temps go up).  I would be interested to see how high the temps would really go after 30 minutes or more (but not on my out-of-pocket equipment).

[Biodom]

Remember, they weren't mining or even connected to the pool at this point. The temps just started rising past 80c without shutting down. The firmware seems not to shut the rig down when it is over 80c. That really needs to be fixed.

Well that goes against everything I've tested, pulled the ethernet and nothing exciting happens. And I've previously tested the 80C limit, it 'freezes' and stops mining.

I agree - it doesn't make sense.  My S3's properly honored that 80C safety shutoff.  But on my pair of S5's, it does not shutoff over 80C.  BTW, the miners really do heat up and it's not just an errant report from the firmware.

A few weeks ago when Ghash went down, my Nicehash limit for return value wasn't met and so it stopped hashing (no rollover) and I did catch this screenshot.

There is a conflict in that screenshot, a fan speed of 3600 RPM yet a high temp. At this point I'm leaning towards it reporting silly temperatures rather than reaching silly temperatures. On a 200W load, even with a 1000 RPM fan it should still be okay. Heatsink temps of 75C over heatsink temps of 50C provides DOUBLE the heat removal in a 25C ambient.

Ah!  I think you have landed on an issue.  Thank you.

The physical truth is, at the time of the screenshot, the fan was not at a high rpm (judging from startup/reboot speeds it was in the 300 to 500 rpm range); and the heat sink fins were too hot to keep my fingers on.  I believe the heat reported, but not the fan speed.

But that still makes me wonder why the 80c safety didn't kick in.  This also happened about 3-4 weeks before this screenshot.  That time it reported 106C, but I didn't grab a screenshot, I was freaked out by the high temp and hurried to power down and move air over them with a box fan.

So the bits of information we have:

a) Status reported high temps
b) Heatsinks were too hot to keep fingers on are ~55C for aluminium, which puts chip temps not much higher.

c) Status reported high fan
d) Fan was low in reality

e) Status did not respond to these 'high' temps
f) Status previously showed 110C, but S5 still works.

From the very last one alone we could conclude that its a display / calculation issue, and the chips aren't reaching the temperature its displaying and / or the measurement isn't even what its displaying. If that type of temp sensor was 110C, the chips would have been way past the "melt into goop" region.

So I just ran a test, by killing my internet.  Very interesting to watch.  The fans spin slow (at an inaudible level).  The GUI seems to be stuck with the last valid stats from while hashing.  

I'm getting the feeling that the GUI only reports when the machine is actually hashing.  I watched the temps of the heatsinks rise by ~8C during the lull of no hashing (with an infrared thermometer).

After connecting the internet, and the miners quit beeping, then the GUI would report an updated status.  After the beeping stopped (internet connected) the fans also did spin up again (full rpm).

After restarting the internet, 1 miner had blades at 96C & 83C reported.  It would not start hashing again, without a reboot.  The other miner had blades at 93C & 78C reported.  Based on my infrared temp readings, both heatsinks were within 1C of each other.  This miner did start hashing again on its own, after restarting my internet connection.

Here's some absolutes I know after my test of an internet failure:
1) fan speed drop to nothing and the temperature rises during the failure
2) the windows GUI does not get updated status from the miner during the failure

So why don't the fans stay up to speed to keep the chips cooling during an internet failure?  

Beyond that, I only have assumptions (though educated guesses, they are still guesses).  It's as though the system is not monitoring its own temps during the internet failure, to adjust fan speed and maintain an operating temperature.

If I was a manufacturer, or had a miner that I didn't have to pay for, I would have let the my internet failure run for more than the 3 or 4 minutes I dared to (watching the temps go up).  I would be interested to see how high the temps would really go after 30 minutes or more (but not on my out-of-pocket equipment).

as i posted before, most important is whether it still uses the same power as before the internet failure-could be easily checked with a kill-a-watt. If it does, then it would be very dangerous. If not, than it is just residual heat (as chips are NOT working anymore) and maybe metal sinks will dissipate the remaining heat safely, even if they heat up to 90C intermittently. Using my S5, as soon as internet drops, power usage also drops to very low (maybe 20w). Whether some other individual miners don't do the same (drop in power usage) is essential to know. i agree that they should have program it to rotate fans for a couple of minutes after the internet blackout.