Topic: [Guide] Dogie's Comprehensive Bitmain Antminer S4 Setup [HD] - page 4. (Read 49614 times)

Its not just about CFM, its about CFM at a given static pressure which on the stock fans is infinitely higher. The best you can do for noise is to replace the front 2 fans with Corsair SP120s but even that won't do much.
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Yeah i'm saying i'm not sure about its static pressure impact since i can't find the Ultra Kaze's static pressure spec. Its not even on frozencpu. The silverstone has More static pressure than the sp120 and thrice the CFM. But still around 1 third of stocks.

Basically i don't need it super quiet. 45-60dB depending ambient temp would be great.

Yes.



Are you certain? It has the same CFM as the stock fans. The only portion i'm not sure is the impact of its static pressure value.
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Its not just about CFM, its about CFM at a given static pressure which on the stock fans is infinitely higher. The best you can do for noise is to replace the front 2 fans with Corsair SP120s but even that won't do much.

I see, weird. The Scythe has only 133 CFM vs the Silverstone's 171CFM. You have compared them to one another and the Scythe is somehow more effective?

When testing fans for the S5 the fan that came closest to stock cooling temps while still reducing noise is the:

Scythe DFS123812H-3000

I'm optimistic that it would provide enough airflow for the S4 as well assuming your ambient temps aren't ridiculous.
The S4 fans spool 4200RPM (max) and this one tops out about 3000RPM so its a very noticeable difference in sound.

Well the S4 doesn't seem to have the S5's fan control option? I'm able to cool the S5 just fine by feeding it cool air and the S4 with stock fan but at lower RPM would probably more bearable.

So that really leaves changing the Fans or downvolting the stock fans =/

It's pretty hard looking at that list to figure out how much dB you would get if you used those fan.

It's pretty tight, unfortunately I sold all my S4's so I cant just measure it for you but eyeballing it I think its to small to fit a 140mm. If you pick them up from amazon you can just return them if they dont fit 

http://www.amazon.com/Silverstone-Cooler-Computer-Cooling-FHP-141/dp/B00A460TK6/ref=sr_1_1?ie=UTF8&qid=1440198421&sr=8-1&keywords=Silverstone+FHP-141&pebp=1440198421762&perid=14NKYMKYKDB1RKMQFRK9

I did this testing multiple fans for S5's and let me tell you, it is VERY difficult to find alternative solutions to cool these guys. I would agree with notlist3d that any of Bitmains replacement suggestions will work just fine but you dont have much to gain by swapping out stock fans.

Stick with the list and you will be fine.  Look at default spec fan on page.

It shows it as "Power consumption: 1600RPM 1.68W / 4000RPM 25.8W".    So it may be running lower but you really want a higher RPM then 2000.

I don't think they are really larger. Is the 120mm such a tight fit it barely fit itself?


Are you certain? It has the same CFM as the stock fans. The only portion i'm not sure is the impact of its static pressure value.

The RPM is slower then you should use.  It would not be recommended.  It is just too slow.

Look here for better choices: https://bitmain.zendesk.com/hc/en-us/articles/204199879-Antminer-S4-fan-specification-and-possible-replacement-fans

I would be willing to bet that those fans (140mm with 120mm mounts) are too big and will not fit in the S4. with max RPMs being 2000 I also dont think they will move enough air to cool them appropriately.

Hello, is replacing the fans in this units with 4x Silverstone FHP-141 possible and a benefit to cooling/dB ratio?

Is not this firmware for beaglebone? https://bitmain.zendesk.com/hc/en-us/article_attachments/201659685/S4_Jan_29_Image.imgc

Win32diskimager does sd card images.  Does not matter what it is for.  Yes it will work for S4 image.

Make sure it's a image your using and not firmware.   Regular S4 firmware is not a SD image for controller.

Yes , they gave me an image and instructions. But these images are not for Beaglebone board
 Here is a letter from support.bitmain.com
Hi,
use this program: http://sourceforge.net/projects/win32diskimager/
image file from good miners locates here: https://mega.co.nz/#!0NRAVDAL!OYVxUNl9tLgrDrCa2B_xDJT00AedczuZ81R7r2N98Gg

1) put card in computer (requires an SD reader)
2) use the above program to backup an image of what’s on the card to your desktop (just in case)
3) use the program to format the card (fat32 should be the default)
4) use the program to write the new image to the card - should take under a minute if the image is only 14MB
5) eject the SD, put it in your unit, and boot up


also I used these instructions: http://derekmolloy.ie/write-a-new-image-to-the-beaglebone-black/
                                       https://bitmain.zendesk.com/hc/en-us/articles/204339655-How-to-create-a-bootable-MicroSD-card-with-factory-setting-

Did they provide an image to put on the SD card?  If so to re-image it is easy just using program to put it on sd.  It is a bootable image so your using a program to copy it and not just drag it to card.

If they did not give image let us know and we can probley find it in thread.  But I'm guessing they provided one.

I have an Antminer S4 which is not working. It does not appear on my list of network devices and so it is inaccessible by HTTP or SSH.

When the Beagleboard and controller board are swapped with known good components from another S4, the miner works as expected. I've contacted Bitmain support and they've advised trying to re-image the Beaglebone board. The problem is I don't know how to do that, and I can't get a clear answer from Bitmain support on how to do it either.

Since I didn't have any spare microSD cards lying around, I bought this one. Bitmain pointed me to these instructions, which only helps with copying the image to the microSD card. I did so with the image provided here using HDDRawCopy.

I put the SD card into the Beaglebone board and booted up the S4. I waited for some time, but nothing ever happened. The fan speed remained low and the unit never appeared on the list of active network devices. I informed Bitmain, and they directed me to this set of instructions, which are not particularly helpful since the stripped-down version of the Beaglebone used for the S4 does not have a USB or 5V power port or a boot button.

I find it hard to believe that no one else has had this issue, though I spent a few minutes searching and couldn't find any useful information. Does anyone know the correct method for re-imaging this board?

The reset is probably just letting it sit for x amount of time, although how long that is we don't really know. There is likely something wrong with your setup which is causing this as I tested S4+s up to 45C ambient I think it was and the PSU was fine.

OK So got my PSU back after sending it to Serbia (the only place in Europe for repair) - cost a lot in postage

Installed and got it working ok and worked fine for about a week then the same thing.

Got back in touch with the service guys who says it is  overheating protection - has been unusually hot in UK recently.

But they cannot tell me how to reset the PSU as against company policy.

Anyone know about this and how to reset the PSU?

Or is it possible to use the ones for sale on the antminer site by adapting the cable to take the older style connectors (not PCI)

thanks for any suggestions

Yes its still the case, its a limitation of the controller that means its likely to crash (or get stuck at low hashrate) on a vardiff pool. Eligius is a vardiff pool so that would explain it.

This I was aware of, I've been mining on BTCguild for quite some time up until this month.