Topic: An Antminer S5 review by klondike_bar; the loud, affordable miner (Read 12673 times)

I have received mine yesterday and .......

It's more than LOUD. I could not believe.
I'm in a small room with two miners at work.
One is a asicminer Tube 800 which I was thinking very noisy after an S3+,
but S5 killed all the records.
My android cell phone shows 75 db when I go next to them. I'm standing up and measuring 1 meter away from.
I do not know how accurate my measurement is.

I'll try your solution when I find an appropriate spare fan frame...

Dog1965, I have a mechanical engineering diplom, bs. (Though I did not work as a Mechanical Engineer but started IT business with ZX Spectrum 48K computers, and I'm 48 years old now)
I congratulate your idea and appliance.
My S5 is on the way coming with UPS. I hope to get it in 10 more days.
I will first apply your solution and then run the machine.
I will tell the results here later.

I agree to your air direction modification thinking...I'm now looking for a spare appropriate fan. I think the ones who applied your solution hopefully successfull...
Good job.

1 silverstone 141 as a pull

and the stock fan at 9 volts as a push works well

Thank you for sharing the info! 

These are the specs on the S5 stock fan.


Dimension: 120*120*38mm
Voltage: 12V
Start voltage: ≧8V (Power ON/OFF)
Power consumption: 1600RPM 1.68W / 4000RPM 25.8W
Rated current: DutyCycle 100% @ 2.15A
Air Flow: 4000RPM @ 178.3CFM (Max be 239CFM)
Noise: 4000RPM @ 56.7 dB-A (Measured in a Non-EchoChamber)
Life Expectancy: 40,000 hrs @ 25℃  (May degrade faster at higher temperature)
Connector: 2510-4P

To replace this kind of fan to make the rig more quiet, you need to find a two fans that are either 25mm or 38mm thick, at least 3000 RPM's, have a CFM of 150 or more and a dB noise rating of less then 40 dB. And folks, let me tell you, it is impossible to find. The only thing that comes close is the expensive Noctua NF12-F12 IPPC 3000. 43dB, 109CFM and have to use both. I have been searching for two 120mm x 38mm fans that can push at least 150 CFM, spin up to 3000, have 4 pin PWM control and a dB rating of less than 40 dB. Impossible to find, since most of them have a high noisei dB rating.

So I stuck with the two high priced Noctua's priced at $24 each and each having a 6 year warranty. By all means they aren't silent but much better than anything I can find. Good luck.

Hello philipma,
for a 85F ambient temp, this looks very impressive. But I remember you have one of those 4000rpm delta and one or two others on that S5...
I would LOVE to get 55db at 1393gh .... I run at stock everything right now with very mixed results:
1.) about 1100gh, fan is at 3240rpm, temp is 48-50C, hw 0.0008%
2.) about 1150gh, fan is at 3600rpm, temp is 48-52C, hw 0.0291%
3.) about 1050gh, fan is at 3960rpm, temp is 55-47C, hw 0.0000%

Don't ask me what batch they are from, all have identical Corsair CM750M's, they are all next to each other. Ambient temp is about 73 in my basement.
(give or take) There are also 10 S1's, 9 S3's and one freaky loud S4)

The 3rd one is the grief, while trying the shroud approach I noticed that the fan blades had damage on the inside, not the grill side, two or three blades had smaller dents and some plastic strands sticking out. It might explain the high pitched whine and noise.

The first two do about 72db and the third one is 78-80db (android app)
I hope that I can get to your levels of overclocking, noise and temps with the vertical positioning and new fans.
(But come to find out that the stock fan is 140cfm, whereas the fans ordered reach 120)

Thanks for sharing your experiences... you have no idea how truly helpful they are.

I would be interested in that as well. I tried the mod with a 120x25mm (his is for sure a 38mm) and it did not work.
I took the grill completely off...

yeah he has wanted me to test it ..  I was happy with the delta's but I should test it with the shroud.  one thing I did was find longer screws.  so the grill is about ½  inch  off the delta fan.

I was getting 55 db and 393gh with my 1 s-5 and said fuck it . it is good enough.  If you find longer screws and space the grill off the delta it does help. somewhere i have a photo of that mod.


here is the s-5 in a 85f garage running with a lot of sp20e's . numbers are good 1290gh  with 99.9922% good and 0.0078% bad  


 and I don't mind the noise as it is in the garage. I suspect the temps are high since we got to 44f today in NJ.

So you modded a fan shroud and it reduces the noise? Interesting. Do you have DB measurements?

Hello philipma,
thank you for your expert opinion. I feel much better now about the impulse purchase.

I read all about your experiments and downloaded all pictures you posted.That mod with the 4 pin floppy and molex connector is a keeper.

I found that other thread / guide about the S5's in vertical position and the improvement in cooling.
I will post there and ask you maybe another question or two....

These fans are different that what you have and everybody else it talking about though.
At least I will be able to rest easier tonight knowing that the deltas's might work to quiet down my little private basement airport. Thanks!!!

those deltas should work for you

Your ambient is more than warm, you have summer in your house...
I finally found your pics with the Noc/Scyth on your miners and see that you want to sell them, did you sell them already?

Whilst shopping for fans (some other thread had a user that was adamant that the Noc is not sufficient) I stumbled across a deal I just could not pass
up at 45 bucks. I am getting sometime this week a box of 18 used Delta AFB1212HHE-F00 with 4 pin connectors. Rated at 120 cfm, 2900 rpm it should be sufficient to quiet my basement down... And with 18, I can try push alone or push/pull on all my S5's with hopefully acceptable results....
Thank you for your replies, they gave me a good idea how to approach these 'vacuums'!!
Now I have to figure out if they would work on the S4 also. Right now with the guards off and the case open it is manageable (not really actually). I don't think I will ever go for another S4, but if this noise factor on the S5's is working out, I will get some more.
cheers

btctalk ate my long post.
In short: somehow Noctua is better than Scythe in push-maybe because of the fan geometry (with larger central part in scythe).
I tried scythe for push, but temp was rising too fast to 65c, and scythe is not PWM, but Noctua is.
However, Scythe does help to lower temp in pull position.
Noctua alone worked in push, but only at 325 or 337.5mhz setting. I did not want temp to exceed 60-61C. I have ambient at 29-30, though. lower ambient might help.

I searched the threads with 'all' your posts ... even 55db would be great. One of these S5's is 78db the others about 72ish. Why did the Scythe not work for you in the push setup? At 133 cfm it should do the same/better than stock. Rabinovich in another thread claims that the stock fan is 107 cfm?
I can't see any benefit of having push/pull with an open case. Why did you decide to go with that?
Thanks for your many informative posts though.... I did try the 'double' fan thing and it does not work for me at all....it's still 75db

not to plug it, but i have a post in marketplace (computers) with the description and pics that describes what happen if you use the Noctua NF-12 3000rpm and Scythe ultra kaze combo. Much less noise, but NOT 40 dB, that's just bs from manufacturers.
Real life noise of that config would be ~55dB, but it is day and night in comparison with 72dB howling from the default fans- I used those for less than 24hr and by the end of the day my ears were ringing nonstop.

I found this thread whilst searching to DE-NOISE the 3 Antminer S5's I have in my basement. Howling banshee's would be a better term for them... ;-)
So I looked at the interesting  pics to 'double' fan (shroud), but looking at the pics and the 120mm I have, it doesn't match. The fan I have is all around open, so there is no shrouding effect.
Spending hours upon hours searching forums and what not, I would just throw the towel and find me some good replacement fans, suitable for the job of cooling (summer coming soon) the S5 and cutting the noise from 65db to about 40.
Do any of you fellow miners have any suggestions?
I am seriously looking at this fan: Noctua NF-F12 industrialPPC 3000 PWM
but there are so many other brands/ choices like Corsair SP120, or cooler masters etc.
Does anybody have any idea what the stock fans value for CFM is?
I vaguely remember seeing something at 4:30 a.m that looked like 286 CFM...
That is a lot of cfm for an 'open' system.... I don't think a push/pull as in the S3 does any good.
I don't overclock at this time, and rather have under-clocking on my mind.
Recommendations would really be very welcomed, as well as opinions. (this water cooling thing is just not for me)

I also would like to know if the same fan solution would work in this bloody S4 that I got myself into. (These are definitely not 'home' mining friendly)
thanks

This started me out with the idea and the fact that I could not take the noise anymore.

http://www.silverstonetek.com/techtalk_cont.php?area=&tid=wh10_0061


then I thought how can I make the air more directional so I was looking at shrouds like this. This is what you use by the way not to fans.

http://pc.mmgn.com/Gallery/120mm-Fan-Shroud

Then I said wait a minute. So I ripped out a 120mm fan from a burnt out one that I found in my closet and just kept the hollow frame and then mounted the original S5 fan back on and WOLLA! noise is gone.

The trick is to add some space between the case and the fan especially with delta fans you cant have nothing to close to the blades not even a fan guard. only fan guard you can use is the one that came with it.

Take your hand and put it over the fan guard you see how much more noise there is.

It cost me nothing but time and now it sound like a s3 a tiny bit louder with the fan guard on but I am going to ad another shroud just to space the guard with the fan.

Brings down temperature as well.

 

So the net effect of this is to use a 120mm fan frame as a spacer between the original S5 fan, and the case itself? How did you stumble on this idea? If true, it's about the cheapest change I have seen mentioned for S5 fan noise.

Wait, you mounted a fan on top of another fan? Are they both blowing in the same direction? I'd love to buy 1 or 2 of these rigs, but I just can't have the noise. That's what I love about the C1's. Have to deal with a pump and coolant, but you can't even tell it is in the room. Runs Silent.

want to bring down the noise and the s5 fan do this it helps a lot.




Take a old 120mm fan rip the fan out just leave the frame remount the fan back on and wolla!! your S5 will sound like A s3 even runs cooler to.



I can sleep at night my wife is not beating me over the head lol lol. it worked for me and the best part about it its still the original S5 fan!!!