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DPoS2
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 Offline
Activity: 189
Merit: 11
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March 30, 2018, 07:41:43 PM |
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What was Canaan's official statement on how cool these should be running?
Right now I can easily keep mine cool Temp:16 / 67 Fan: 3960RPM / 62%
but in the summer......
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Learn the *Truth* about Big Company Mining Pools!!! Stop Giving Your Money Away!!! |
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Thetaj
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March 31, 2018, 03:05:45 PM |
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What was Canaan's official statement on how cool these should be running?
Right now I can easily keep mine cool Temp:16 / 67 Fan: 3960RPM / 62%
but in the summer......
Shouldn't be a problem. I have ran the avalon 741s for almost a year now and not a single one has failed. |
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akadamson
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Activity: 140
Merit: 18
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April 01, 2018, 08:55:46 PM |
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What was Canaan's official statement on how cool these should be running?
Right now I can easily keep mine cool Temp:16 / 67 Fan: 3960RPM / 62%
but in the summer......
Shouldn't be a problem. I have ran the avalon 741s for almost a year now and not a single one has failed. when I got my 821's I sent Canaan an email as I found a couple of issues which they since fixed in the controller firmware. One of the questions was about heat. The new ASIC's are NOT like the old ones, they will not tolerate high temps. Yesterday I decided to look at the Avalon8 code in cgminer and same with the 821's. The fan will moderate (or more likely max out) to maintain 70C. Anything hotter will run that fan at 100% and runs the risk of damaging the ASIC's. This is what was returned in my email from them as well. While the fan moderation temp on the 741's was 90C (in the source code), it's 70C in the 800 series miners. My recommendation is to *NOT* allow them to run for any length of time over the low 70's. But that's just me But 90 for any length of time, I'm very sure will be utterly destructive to them. |
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space_cat
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Activity: 11
Merit: 1
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April 02, 2018, 02:22:03 AM
Last edit: April 02, 2018, 08:25:43 PM by space_cat |
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Great review. What is the average and max CFM of the 841 if you don't mind me asking.
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HagssFIN (OP)
Legendary
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Activity: 2422
Merit: 1706
Electrical engineer. Mining since 2014.
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April 02, 2018, 10:45:44 PM |
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Great review. What is the average and max CFM of the 841 if you don't mind me asking.
AvalonMiner 841 has one piece Delta Electronics QFR1212GHE or other brand equivalent technical specs fan, and it is installed in rear side of the miner for a pull configuration. https://www.digikey.com/product-detail/en/delta-electronics/QFR1212GHE-SP01/603-1165-ND/1850534Air Flow 210.4 CFM (5.89m³/min) |
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Megaquake
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April 16, 2018, 10:31:49 PM
Last edit: April 17, 2018, 01:12:15 AM by frodocooper |
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Hey guys, so here is the 2 comparisons
[...]
No bad 1237 watts @ -1 offset my 841's run ~13.6 TH/s with -1 offset. 1 is 13602.03 GHS the other is 13674.88 GHS currently.
Moderator's note: This post was edited by frodocooper to trim the quote from Thetaj. |
Mines at Kano.is best profit in the world!
在Kano.is的BTC
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Thetaj
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April 17, 2018, 03:06:48 AM
Last edit: April 17, 2018, 03:14:25 AM by frodocooper |
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No bad 1237 watts @ -1 offset my 841's run ~13.6 TH/s with -1 offset.
1 is 13602.03 GHS the other is 13674.88 GHS currently.
yea, So far without seeming to brag too much. It appears that after a month, every machine is working well. It seems that the 841s ARE more sensitive to temperature and will shutdown if temperature exceeds acceptable threshold. -1 seems to be the best setting as of the moment. There maybe more efficiency to be had in firmware upgrade though.
Moderator's note: This post was edited by frodocooper to trim the quote from Megaquake. |
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mgoz
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April 18, 2018, 01:53:15 PM |
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Can any of you guys post room temp vs machine temps? Curious to see. Intake temp on my 841's is constantly at 28-31C in a 20C room. One of them keeps going into idle status randomly and won't start hashing again until restarting PSU. Canaan support thinks it's the temperature. Intake in cgminer is roughly 10C higher than room temp and my room thermometer is directly behind the intakes.
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richdmz
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Activity: 61
Merit: 0
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April 18, 2018, 07:43:05 PM |
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on a related note, is there an add-on or something that can be used to have cgminer email temps?
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HagssFIN (OP)
Legendary
Offline
Activity: 2422
Merit: 1706
Electrical engineer. Mining since 2014.
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April 18, 2018, 07:53:28 PM |
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on a related note, is there an add-on or something that can be used to have cgminer email temps?
As far as I know, nope. You would have to code system like that yourself. |
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NotFuzzyWarm
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Activity: 3612
Merit: 2506
Evil beware: We have waffles!
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April 18, 2018, 08:36:54 PM |
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on a related note, is there an add-on or something that can be used to have cgminer email temps?
As far as I know, nope. You would have to code system like that yourself. Only thing I can think of is to use monitoring software like Awesome MinerWhich can be set to monitor various miner conditions by looking at the cgminer API and yes can send a text/email when alarms thresholds are exceeded. On a side note, rather surprised that Frodo has moved the AM thread to the altcoin area.... |
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HagssFIN (OP)
Legendary
Offline
Activity: 2422
Merit: 1706
Electrical engineer. Mining since 2014.
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April 18, 2018, 09:36:05 PM |
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Yep, Awesome Miner would be the best readymade software for that job.
You just need a PC which has the software installed and is powered on 24/7.
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philipma1957
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Activity: 4102
Merit: 7764
'The right to privacy matters'
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July 08, 2021, 10:22:29 PM |
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Anyone have a source for the PMU part?
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HagssFIN (OP)
Legendary
Offline
Activity: 2422
Merit: 1706
Electrical engineer. Mining since 2014.
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July 09, 2021, 04:22:00 AM |
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Maybe Zeusbtc has a one?
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robertpaulsen
Newbie
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Activity: 20
Merit: 25
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August 30, 2021, 05:22:21 PM |
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These links are not working anymore. Does anyone know a safe source where I can find the firmware? |
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HagssFIN (OP)
Legendary
Offline
Activity: 2422
Merit: 1706
Electrical engineer. Mining since 2014.
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August 30, 2021, 05:32:59 PM |
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Yes, the address has changed. All the AvalonMiner downloads can today be found here: https://download.canaan-creative.com/ |
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