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

[dogie]

How safe is or would it have any effect on the miner if I were to have the ATX PSU run off a modified wave inverter?
We have 2 -6 hour power outages in SA.
I don't want to destroy the PSU or the miner in anyway.
I am getting mixed responses online about using modified wave inverters.

So, the wave inverter would be powered by 12VDC batteries?  Why not power the S5 from the batteries?  The S5 needs a common 12vdc bus I think they said.  So, batteries to the 12V bus connector board and the power supplies charging the batteries.

Oh, you probably fire up a gas engine generator.  You'd need quite a few 12vdc batteries to drive miners for 2-6 hours.

Be an interesting experiment - take a miner to a fully charged car battery and flip a series switch then watch how long it keeps hashing while taking stats on remaining voltage and hashrate until it dies.

Don't even attempt to power S5s direct from batteries. A 12V battery is almost guaranteed not to be 12V and as with all batteries will have a varying output voltage as it discharges. This is a pretty typical voltage chart of a '12V' car battery but you could get a lot worse, especially in relation to high start voltage. Is 4 hours of mining time really worth a fried S5?

[philipma1957]

how much high grade ram do you think the controller will need? 8gb of ddr3 or 4gb of ddr5.  the controller will cost $$$$.  So the s-5 will not be 340-370 it will be   440-470.   A shit coin can have 10000x the shares of a bitcoin.

BTW I would like a better controller myself.  Maybe a new quad core rasp pi  x 2 has enough to  do it.

It appears you're throwing numbers around.  I don't know what memory the S5 is using now and I don't know what the actual problem is.  Perhaps it's a little early for your speculations?  Let's see what Bitmain has to say and try to avoid speculation!

The numbers are being tossed around  but they are the  reason for problem.

You can not do the work fast enough due to the shit coin flooding the controller with work

[Fatman3001]

Isn't there a proper antpool thread somewhere? Bitmain talk is useless. What am I missing here?

[opentoe]

The noise of this unit and the odds probably never being able to get your return back ( I've done some numbers ) and bitcoin pretty much has had its day and I doubt will ever recover to where it once was there's no sense in buying this hardware anymore. I remember you could run a farm of GPU's for over a year and still be good, but these days, maybe 2-3 months and your finished. Too bad.

I would buy one to tinker with with it, but putting something in my house that sounds like a jet isn't going to happen.

[transcyberian]

[/quote]

I wonder if an ATX PSU tolerates a modified sine wave inverter.  If it does, then I also wonder if the +12VDC output would be kosher for the miner?  I guess I'm sort of hoping that the ATX PSU would somehow modulate the modified sine wave and outputs a clean +12VDC.


[/quote]

I plugged a pair of Corsair AX860's feeding a pair of S5's into an APC SUA1500 UPS and they ran normally when AC was present.  (The UPS in normal mode provides 'power conditioning' - I'll assume that to be something simple like surge suppression.  When I pulled the AC  it didn't seem to make much of a difference to the Corsair PSU's - maybe a tad more noise - It ran both S5's at 120.3 vac for about 7 minutes before the battery light dropped to 20% and I plugged it back into commercial power.  On paper, it should have run a few minutes more but the batteries are two years old.  Is an UPS worth the cost ?  Probably not unless you've got access to a decent unit at a fair price (check the thrift stores for used ones - generally all they need is a battery refresh).  Having a high-efficiency power supply is my first priority for stable mining.

Has anyone operated their S5's in a refrigerator

[TrevorS]

The numbers are being tossed around  but they are the  reason for problem.

You can not do the work fast enough due to the shit coin flooding the controller with work

If the Diff setting assigned the miner by the server is too low, then yes, the miner wouldn't be able to keep up, but why should that cause a lockup?  That sounds like a firmware issue to me.  My experience mining various SHA-256 coins is that the servers generally set higher Diffs in order to hold down their interrupt levels.  West/NiceHash allows setting the initial Diff in the password (e.g."d=512") which indicates they also actively control it.  It seems unlikely they would deliberately excessively lower the Diff recognizing the increased impact on their server.  Are we sure this is what's happening?

[KeezAZA]

When I turn on my C1 (yes, the water cooled model) it kicks up the fan to high speed while it initializes and boots. Is that how loud a S5 is, or is it much louder than that?

I see several videos on youtube from users replacing their fans to silent type fans, is there a particular setup that works the best to quiet these S5's? I saw that one video where the guy was using a white silent fan from AAB Cooling, which I couldn't hear from it at all. What is everyone buying to keep their rigs more quiet? I assume they are adding another fan on the other end and switching both fans to other brands. There are hundreds out there, ranging from 1600-2000 rpm's mostly....what's the best setup for this S5 to make it quiet?

That's the last thing I would want to do. I saw a video on youtube where the dude has his S5 running with two silent fans and it's only 43 decibels. That I can live with. I doubt no one wants to spend another couple hundred dollars on a water kit. Just more work and watts.

No, an S5 is much louder. The C1's fan is an 'S3' fan which maxes out about 1600RPM lower and has a different sound profile to it on top.

I'd be very scepital about users 'silencing' an S5 without running it in a cold ambient or extremely hot. There are a lot of board components other than just the ASICs which require cooling and reducing airflow disproportionately affects these component. The closest you're going to get to 'silent' is 2x Corsair SP120s (high performance editions). They're not silent, but they're not horrendous either.

This is the same conclusion i came to this weekend. My S5 ran @ 4080RPM @ 56C running @ 325mhz.
if i can't get it under control then I am going to go deaf.

Ambient temp was 38C. in the house it was 40 with the windows open. No aircons in the house(cost to much to run).


My idea was not to run the S5 of batteries but rather through the following.

Batteries --> Modified wave inverter --> ATX PSU --> S5.

I would like to try the following when the parts one day arrive.
Room air --> Peltier --> S5 intake fan --> S5 Exhaust fan.

even if its 40W more. makes little diffs if you are pulling in the region of 650W anyway.

[dogie]

The numbers are being tossed around  but they are the  reason for problem.

You can not do the work fast enough due to the shit coin flooding the controller with work

If the Diff setting assigned the miner by the server is too low, then yes, the miner wouldn't be able to keep up, but why should that cause a lockup?  That sounds like a firmware issue to me.  My experience mining various SHA-256 coins is that the servers generally set higher Diffs in order to hold down their interrupt levels.  West/NiceHash allows setting the initial Diff in the password (e.g."d=512") which indicates they also actively control it.  It seems unlikely they would deliberately excessively lower the Diff recognizing the increased impact on their server.  Are we sure this is what's happening?

I don't know about westhash specifically but a lot of pools are running var diff, which starts with very low diff shares and increases as the miner reports higher hashrate. If the miner can't run with a 'shit tonne' of low diff shares, its hashrate never climbs. As you say it would be great if the controller doesn't eventually lock up, but that's the reality. If you use it inappropriately then its not going to work as we want it to.

[dogie]

Isn't there a proper antpool thread somewhere? Bitmain talk is useless. What am I missing here?

https://forum.bitmain.com/ is usually a bit quicker on software / site related things.

[KeezAZA]

When I turn on my C1 (yes, the water cooled model) it kicks up the fan to high speed while it initializes and boots. Is that how loud a S5 is, or is it much louder than that?

I see several videos on youtube from users replacing their fans to silent type fans, is there a particular setup that works the best to quiet these S5's? I saw that one video where the guy was using a white silent fan from AAB Cooling, which I couldn't hear from it at all. What is everyone buying to keep their rigs more quiet? I assume they are adding another fan on the other end and switching both fans to other brands. There are hundreds out there, ranging from 1600-2000 rpm's mostly....what's the best setup for this S5 to make it quiet?

That's the last thing I would want to do. I saw a video on youtube where the dude has his S5 running with two silent fans and it's only 43 decibels. That I can live with. I doubt no one wants to spend another couple hundred dollars on a water kit. Just more work and watts.

No, an S5 is much louder. The C1's fan is an 'S3' fan which maxes out about 1600RPM lower and has a different sound profile to it on top.

I'd be very scepital about users 'silencing' an S5 without running it in a cold ambient or extremely hot. There are a lot of board components other than just the ASICs which require cooling and reducing airflow disproportionately affects these component. The closest you're going to get to 'silent' is 2x Corsair SP120s (high performance editions). They're not silent, but they're not horrendous either.

Do these Corsair SP120s produce enough airflow? 63CFM? Is that enough?
http://www.corsair.com/en/air-series-sp120-high-performance-edition-high-static-pressure-120mm-fan
I am looking at 2x Coolmaster Jet Flow 120mm fans and not sure if they are enough. they do 90CFM.

[dogie]

When I turn on my C1 (yes, the water cooled model) it kicks up the fan to high speed while it initializes and boots. Is that how loud a S5 is, or is it much louder than that?

I see several videos on youtube from users replacing their fans to silent type fans, is there a particular setup that works the best to quiet these S5's? I saw that one video where the guy was using a white silent fan from AAB Cooling, which I couldn't hear from it at all. What is everyone buying to keep their rigs more quiet? I assume they are adding another fan on the other end and switching both fans to other brands. There are hundreds out there, ranging from 1600-2000 rpm's mostly....what's the best setup for this S5 to make it quiet?

That's the last thing I would want to do. I saw a video on youtube where the dude has his S5 running with two silent fans and it's only 43 decibels. That I can live with. I doubt no one wants to spend another couple hundred dollars on a water kit. Just more work and watts.

No, an S5 is much louder. The C1's fan is an 'S3' fan which maxes out about 1600RPM lower and has a different sound profile to it on top.

I'd be very scepital about users 'silencing' an S5 without running it in a cold ambient or extremely hot. There are a lot of board components other than just the ASICs which require cooling and reducing airflow disproportionately affects these component. The closest you're going to get to 'silent' is 2x Corsair SP120s (high performance editions). They're not silent, but they're not horrendous either.

Do these Corsair SP120s produce enough airflow? 63CFM? Is that enough?
http://www.corsair.com/en/air-series-sp120-high-performance-edition-high-static-pressure-120mm-fan
I am looking at 2x Coolmaster Jet Flow 120mm fans and not sure if they are enough. they do 90CFM.

Yes its enough because its not just about CFM, its the relationship between CFM and static pressure. Think of CFM as the absolute best case scenario. If a fan has a lower static pressure, its much much less likely to achieve that effective CFM when in situ. Argh its hard to explain, but the answer to your question is "yes, absolutely".

[MrTeal]

When I turn on my C1 (yes, the water cooled model) it kicks up the fan to high speed while it initializes and boots. Is that how loud a S5 is, or is it much louder than that?

I see several videos on youtube from users replacing their fans to silent type fans, is there a particular setup that works the best to quiet these S5's? I saw that one video where the guy was using a white silent fan from AAB Cooling, which I couldn't hear from it at all. What is everyone buying to keep their rigs more quiet? I assume they are adding another fan on the other end and switching both fans to other brands. There are hundreds out there, ranging from 1600-2000 rpm's mostly....what's the best setup for this S5 to make it quiet?

That's the last thing I would want to do. I saw a video on youtube where the dude has his S5 running with two silent fans and it's only 43 decibels. That I can live with. I doubt no one wants to spend another couple hundred dollars on a water kit. Just more work and watts.

No, an S5 is much louder. The C1's fan is an 'S3' fan which maxes out about 1600RPM lower and has a different sound profile to it on top.

I'd be very scepital about users 'silencing' an S5 without running it in a cold ambient or extremely hot. There are a lot of board components other than just the ASICs which require cooling and reducing airflow disproportionately affects these component. The closest you're going to get to 'silent' is 2x Corsair SP120s (high performance editions). They're not silent, but they're not horrendous either.

Do these Corsair SP120s produce enough airflow? 63CFM? Is that enough?
http://www.corsair.com/en/air-series-sp120-high-performance-edition-high-static-pressure-120mm-fan
I am looking at 2x Coolmaster Jet Flow 120mm fans and not sure if they are enough. they do 90CFM.

Yes its enough because its not just about CFM, its the relationship between CFM and static pressure. Think of CFM as the absolute best case scenario. If a fan has a lower static pressure, its much much less likely to achieve that effective CFM when in situ. Argh its hard to explain, but the answer to your question is "yes, absolutely".

A picture is worth 1000 words.

This is called a fan's PQ curve. On the y-axis is the static pressure. The fan's rated static pressure will be on the left when airflow is 0. On the x-axis is the airflow, usually in CFM. The rated CFM will be on the bottom right when there is no backpressure (y=0).

The static pressure is a function of your application. If you have a heatsink with lots of closely spaced fins it will take more static pressure to push the air through the fins. In the pictures above, at a given static pressure fan A is producing more flow than fan B, even though they have the same static pressure and CFM ratings. It's exagerated, but you can actually see it in different datasheets.
AFB 120x38
QFR 120x38
The curve for the QFR looks more like fan A, while the curve for the AFB looks more like fan B. Even though they're rated for the same CFM, against a heatsink the QFR would push more air.

[netcoingeek]

So in my ever epic request to make this thing quite.... I think I finally have found a way.....

http://eddiesilva.me/wp-content/uploads/2015/02/antminerweb.png

Here is the antminer page running for 8 hours overnight. Ambient temps are 68F or just below 20c. I have a Noctua SSO2 Bearing, Retail Cooling NF-F12 iPPC 2000 PWM fan attached as the push fan and an ARCTIC F12 PWM Rev. 2 Fluid Dynamic Bearing Case Fan, 120mm PWM Speed Control, 74CFM at 22.5dBA as the pull fan. And that is it, nothing else.

As far as quite goes, it is waaayyyyy more quiet than stock and more quiet than any other combination of fans that I have tried.  The miner is running a bit hot, 61 and 59c but I am perfectly stable at 325. I do not plan to overclock the miner, maybe Ill try to bring it up to default but as of right now, Im happy with the noise and hashrate.

[KeezAZA]

that is a serious drop in RPM. The stock fan would be doing 4000RPM at those temps.

[klondike_bar]

that is a serious drop in RPM. The stock fan would be doing 4000RPM at those temps.

possibly a rporting issue. the fan is capable of 2000rpm and the antminer software would certainly be feeding it full amperage at 60C temps. it might report 1200 but likely is 1600+

[bitsolutions]

I don't know about westhash specifically but a lot of pools are running var diff, which starts with very low diff shares and increases as the miner reports higher hashrate. If the miner can't run with a 'shit tonne' of low diff shares, its hashrate never climbs. As you say it would be great if the controller doesn't eventually lock up, but that's the reality. If you use it inappropriately then its not going to work as we want it to.

Var diff on some pools starts low and goes up, on others it may start high and go down. It should only be a problem on pools that start with an unusually low diff.

[netcoingeek]

that is a serious drop in RPM. The stock fan would be doing 4000RPM at those temps.

possibly a rporting issue. the fan is capable of 2000rpm and the antminer software would certainly be feeding it full amperage at 60C temps. it might report 1200 but likely is 1600+

I thought it was a misread too but the speeds of the fan DOES increase then decrease and the software does report the changes. I'm not sure why it's performing like this, the noctua fans are designed to push air more streamline. I thought that could be it. Whatever it is it's working and my house is quiet. With another fan speeds were in the 3000's and loud at this setting and temps were 5 degrees higher. It didn't make sense until I put my hand under the miner and with that setup there was a lot of air escaping from under the miner and not making it back to the heatsink. With the noctua fan there is no air escaping from the bottom side of the miner (my miner sits on its side) and if I put an accessory fan to pull or push from the bottom side temps go up and the noctua spins faster.

The 1200 rpm fan is capped at 1500 rpms, the noctua fan is at 1680 rpms.

[TrevorS]

Var diff on some pools starts low and goes up, on others it may start high and go down. It should only be a problem on pools that start with an unusually low diff.

From observation, Westhash start Diff for the S5 is 512.

I don't know about westhash specifically but a lot of pools are running var diff, which starts with very low diff shares and increases as the miner reports higher hashrate. If the miner can't run with a 'shit tonne' of low diff shares, its hashrate never climbs. As you say it would be great if the controller doesn't eventually lock up, but that's the reality. If you use it inappropriately then its not going to work as we want it to.

I've experience as a software engineer, and for the hardware to lock up due to excessive workload translates into faulty software to me.  There should be safeguards against such eventualities -- the work queue can either be successfully met or it can't.  Lockup indicates a defect (ie bug), I can't easily believe any real engineer would consider it otherwise.  There have to be cleaner solutions than GUI lockup for work overload handling!

I've decided to regularly sample the Diff reported by my two S5s.  So far the high has been 4.1K(4096?) and the low 512 with only a brief excursion to 256.  I'm hoping to see just how low it gets.  This recognizing I'm limited to periodic manual checks.

[muhrohmat]

ant miner seems to be good but i bellive it need to be more stated the price ante wats and the roi for every body to check bill of eletrecity acording to day profit and see if its like 1 dollara proit per day and payed in 6 months

[Truman]

When will AntMiner 5 be available again?