Topic: Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order - page 274. (Read 531168 times)

Hi All,
Can you use 14 Gauge extension cords (max amp 15) with these S9's. I know the instructions say that these machines are 20 amps so i wanted to see what the rest of you guys were doing extension cord-wise. Thanks a bunch,
MM333

I got a response back from their support department, looks like they should be uploading the S9 firmware SDK next week.

won't work.  360 watts s-1 vs 1400 watts s-7  do not fuck with the fans via replacement.

 downclock to freq 475 and lower fan speed to 40-50%.  I did extensive testing it is the easiest solution.

downclock results
https://bitcointalksearch.org/topic/m.15456266

the thread below is what I did in the winter with s-7s and avalon 6's
https://bitcointalksearch.org/topic/m.15528182

It would appear that by renaming it to "bmminer" they intend to pretend that it's not cgminer at all...

I posted this earlier in the thread, but I think it got lost in the excitement of new S9s. With the original S1s, there was a mod that worked quite nicely.  You could take them apart and put a 200mm fan on each blade to cool them effectively but silently:

https://imgur.com/a/RUAX5

I did this with my old S1, and it worked amazingly. The miner ran at full speed, with a better temp than the factory fans, and it was totally silent unless you were standing right next to the fans. I'm going to wait another month or so until my warranty expires, then I'm going to try the same thing with my S9. Particularly with the thermal throttling built into the S9s that protects them from overheating, I'm confident this will make for a better mining experience. My only concern is finding another "base" for the third module in the S9s.

Too late.
They've exceeded the license requirements.

I have this tid bit of information about what they have done.
http://kano.is/BMMMP63278.pdf

I guess the fact that they have ignored a patent isn't unexpected ... though personally I'm certainly not a fan of patents

Hey thank you! This looks really exciting. I'm going to try this with mine. The sound is really issue for me. Will report how it works when finished.

I posted this earlier in the thread, but I think it got lost in the excitement of new S9s. With the original S1s, there was a mod that worked quite nicely.  You could take them apart and put a 200mm fan on each blade to cool them effectively but silently:

https://imgur.com/a/RUAX5

I did this with my old S1, and it worked amazingly. The miner ran at full speed, with a better temp than the factory fans, and it was totally silent unless you were standing right next to the fans. I'm going to wait another month or so until my warranty expires, then I'm going to try the same thing with my S9. Particularly with the thermal throttling built into the S9s that protects them from overheating, I'm confident this will make for a better mining experience. My only concern is finding another "base" for the third module in the S9s.

I got a response back from their support department, looks like they should be uploading the S9 firmware SDK next week.

S9's firmware package with bmminer's binary application file is in preparing, Need get some files from ALTERA FPGA's project. We will upload the sdk of S9 which can be used to create S9's firmware package. The estimation time is about next week.

Please feel free to contact us if there is any question.

Best regards,
Andy
Bitmain

The case serves a cooling function too - directs airflow and probably dissipates heat as well. I would be very careful with a mod like that. Among other issues you'd likely have hot air getting mixed back into intake.

down clock it some more. and lower fans to 50%

Try freq 475  with a 45% fan   it will give about 9.5 to 9.9th

There HAS GOT to be a good way to shut up that SIREN sound on the S9 11.85!!!

I have read on here about loosening screws, tightening screws, and putting some paper on the intake to partially block air flow. There may be other suggestions that I missed as I haven't read every page.

Well, I have tried loosening and tightening without any effect.

Putting a piece of cardboard to partially block the intake works, but, of course, raises the temperatures.

I have also set the fan speed manually to 87%. But if I take that cardboard away, the siren starts back up.

I'm concerned the neighbors are going to complain if I don't shut up that noise because their front porch faces the windows that I'm drawing air in from. And I really don't WANT to obstruct air flow as I've had to down-clock a lot to keep it cool enough.

Any other thoughts on that noise? Would switching out one or both fans have any effect?
Good Lord that is an abrasive sound!!!!

Thanks for any more thoughts on this annoying and irritating problem!!

EDIT: Does the foam AC filter trick work well? Are you covering the whole intake or just the part that will stop the squeal?
Hell, I'll cut a piece off of an AC I'm not using right now. Thanks!!

EDIT2: Well putting an AC filter over the intake didn't stop the squeal. BUT, I found that taping a small piece of cardboard on the top right corner of the out-take fan did stop the noise. The noise has stopped but I'm not too keen on having flammable cardboard in that hot zone. I have to find a replacement material. It's also keeping the temps higher than I would like even with it under-clocked.

Still seeking a good solution.  

Anyone seen a link for the source code?

It's now been about a month and the code should be available by now, otherwise they're ignoring the cgminer license ...

Anyone seen a link for the source code?

It's now been about a month and the code should be available by now, otherwise they're ignoring the cgminer license ...

Thanks for the ideas, but I'm not to the point of removing the case.

On the S9 controller there is two fan connectors but the board have place for 6 others fans connectors.

Do you know if these connectors placeholder receive power? If yes would it be possible to add fan connectors.

Here is an idea for a quieter miner. Remove the case and have 2 fans pointing directly at each blade sideways. So the fans would be pointing directly over the heatsink. With this setup I'm sure it would be possible to use lower cfm fans (quieter). 6 quiet fans is a lot better than 2 jet engines. Anyone tried this?

If the controller cannot power more than 2 fans it is possible to use a 1-to-3 splitter to power 3 fans per connector.