Antminer S9 or L3+ noctua NF-F12 compatability

[PavelSou]

I've got a few Antminer L3+ and one S9 on the way, and wanted to upgrade the fans to something way more quiet, the NF-F12 iPPC-3000 PWM for example since they've got a similar CFM airflow rating, and wanted to inquire if anyone knows if it'll be compatible or if there's something proprietary about it? From my research online I've only been able to find people successfully doing this with the S5 for some reason.

 

Any input on the topic is appreciated.

 

Thanks!

[KarathKasun]

45 minutes ago, PavelSou said:

I've got a few Antminer L3+ and one S9 on the way, and wanted to upgrade the fans to something way more quiet, the NF-F12 iPPC-3000 PWM for example since they've got a similar CFM airflow rating, and wanted to inquire if anyone knows if it'll be compatible or if there's something proprietary about it? From my research online I've only been able to find people successfully doing this with the S5 for some reason.

 

Any input on the topic is appreciated.

 

Thanks!

Only if you want them to overheat.

 

They are loud for a reason.

[PavelSou]

9 minutes ago, KarathKasun said:

Only if you want them to overheat.

 

They are loud for a reason.

Don't worry about that, I've got a register box for my AC vent. My question is about compatability.

[KarathKasun]

6 minutes ago, PavelSou said:

Don't worry about that, I've got a register box for my AC vent. My question is about compatability.

You are going to corrode the boards with condensation/humidity in that case.  If you have really good humidity management or in an extremely dry climate it may not be a problem, but Ive seen miners literally fall apart when using poorly thought out HVAC cooling.

 

In theory, the fans are electrically compatible if the miner uses 12v and standard RPM sense signals.  Not sure if they use PWM speed control or just run at max all the time though.

[PavelSou]

5 minutes ago, KarathKasun said:

You are going to corrode the boards with condensation/humidity in that case.  If you have really good humidity management or in an extremely dry climate it may not be a problem, but Ive seen miners literally fall apart when using poorly thought out HVAC cooling.

 

In theory, the fans are electrically compatible if the miner uses 12v and standard RPM sense signals.  Not sure if they use PWM speed control or just run at max all the time though.

Yes, but condensation would only build up if the fans stopped running and the ac stopped blowing at the same time, and the hot miner stood in a cold humid room for a while, with the constant blasting airflow moisture won't have time to build up (like with a constant dryer fan). Thanks for the input. I'll try to remember to report back with the results!

[bcredeur97]

7 hours ago, PavelSou said:

Yes, but condensation would only build up if the fans stopped running and the ac stopped blowing at the same time, and the hot miner stood in a cold humid room for a while, with the constant blasting airflow moisture won't have time to build up (like with a constant dryer fan). Thanks for the input. I'll try to remember to report back with the results!

if this works out, please let us know.

I'd be interested in maybe getting antminers in the future if the fans were a bit... less noisey? lol

[PavelSou]

Update:

 

The miner came. So, you have to sand off (or in my case slice off with a sharp knife) the little protective stubs that make sure that the fan goes in the right way, since the one on the antminer is twice as wide, and the fans HAVE to be 4-pin PWM or it won't recognize them at all. Once you have them plugged in and screwed on (and be careful when screwing on, the stock screws are super long, and when you put on the slimmer fan, they actually go deep enough do damage the mainboard, so get some shorter screws or use washers), the fans do eventually spin up, the RPM is recognized, but.. the shitty part is that the machine is hard coded to only work with 6000RPM fans, so it does work for 5-10 seconds, then stops, and logs the error 'Fan Err! Disable PIC! Fan1 speed is too low, 1510rpm at 50PWM', since I guess it's looking for 3000 at 50%

 

And so I put the stock fans back on and manually set the fan speed to its minimum, and guess what, the temperature sits at around 55 degrees at 1710rpm, with the same (or even worse) airflow as Noctua at similar RPMs, but way louder. So this sucks. Even though the fans are fully capable, due to this stupid exception you can't use properly sound engineered fans  

 

The next step would be for me I guess to try a pwm emulator on an Arduino. Stay tuned.

[astone]

Hi, I know this thread is quite old. I wanted to share that I have the Noctua NF-F12 fans successfully running on my Antminer L3+. I initially encountered all the same issues that @PavelSou did, however I installed the NiceHash firmware on my miner, which has a setting to "Disable Fan Check". With this enabled, the miner is happily hashing and running at about 74PWM ~2300rpm in a 24c room with PCB temps around 55c.  The miner is now very quiet! Even when trialling running the fans at 100PWM its not bad at all. I would be cautious using these fans in a space where ambient temps exceed 30c.

 

 

Quote

 

Update:

 

The miner came. So, you have to sand off (or in my case slice off with a sharp knife) the little protective stubs that make sure that the fan goes in the right way, since the one on the antminer is twice as wide, and the fans HAVE to be 4-pin PWM or it won't recognize them at all. Once you have them plugged in and screwed on (and be careful when screwing on, the stock screws are super long, and when you put on the slimmer fan, they actually go deep enough do damage the mainboard, so get some shorter screws or use washers), the fans do eventually spin up, the RPM is recognized, but.. the shitty part is that the machine is hard coded to only work with 6000RPM fans, so it does work for 5-10 seconds, then stops, and logs the error 'Fan Err! Disable PIC! Fan1 speed is too low, 1510rpm at 50PWM', since I guess it's looking for 3000 at 50%

 

And so I put the stock fans back on and manually set the fan speed to its minimum, and guess what, the temperature sits at around 55 degrees at 1710rpm, with the same (or even worse) airflow as Noctua at similar RPMs, but way louder. So this sucks. Even though the fans are fully capable, due to this stupid exception you can't use properly sound engineered fans  

 

The next step would be for me I guess to try a pwm emulator on an Arduino. Stay tuned.

 

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