Topic: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH - page 117. (Read 451039 times)

What's the minimum per fan CFM on a 2x fan setup?

I'm able to run at a frequency of 250M hashing almost 800GH/s with two old PSU fans. These fans can't be more than 20 CFM each. This thing seems stable just below 50 deg.

Not enough CFM. These fans do max 70 cfm. ( I did try the same setup)

You need more cfm. Check the delta fans. 

I've done some research, made some measurements and experimented with some 2-wire 120mm fans from old PSUs.

I believe that two of the following fans will work in push/pull configuration to run at stock frequency (350M) or higher without going for gold in a banshee screeching contest.

http://www.cougargaming.com/products/fans/vortex_pwm.html

"Cougar Vortex" $11.89 USD each at the local shop.

BitmainWarranty

Got S5 which is not working one of the blades. The power supply uses 1,200 watts. Photo attached.

https://i.imgur.com/ggDPbTN.jpg

https://i.imgur.com/kpojLgr.jpg

https://i.imgur.com/W8h5Mgh.jpg

https://i.imgur.com/zayUNjk.jpg

https://i.imgur.com/28lfzpE.jpg

It is just inside 90 days, so I'll send an email to the above address and see what comes of it. Not sure what the wording should be in the email though (seeing it was [email protected] who told me to get one from the local market) .... I'd like to get a replacement fan as the shipped one was a DOA .... would that suffice?

@Pekatete,

if your purcahse was within the last 90-days, please e-mail [email protected] and attach your Order Confirmation page in PDF with your shipping address information.  There is a service center in Serbia that may be able to service you closer than USA.

Better late than never .... but I am not based in the US, rather the UK, so it may be tricky for me to send you the dead fan (which I still have and looks pristine next to the others I salvaged from my now decomisioned S1's!). If on the other hand you can send me the replacement without me having to meet the cost of mailing you the dead one, I'll be more than happy to furnish any info you require.

Hi peeps... i have some question regarding the hashing boards. I've found the following, comparing with dogie's photoshoot:



In this image, i've seen that the new hashing boards come with additional pins, with a 3-bit address and a plug pin. Is this a sign of a coming device with 8 hashing boards? Can i connect 8 hashing boards to the same controller with different address bases?

I suppose those A0, A1 and A2 go to the lower part of the addr pinout of each BM1384 on the hashboard, set by the controller board, am i right? Given that 5 Bits are enough to handle 32 I2C devices, and probably the temperature sensor is on the I2C bus too (or something else i'm missing?).



That would allow direct addressing from the controller board to 256 devices, grouped on 8 different boards, with 32 devices on each board.... makes sense? doesn't it?

Also, the controller board:



Comes with an Altera Cyclone 4 FPGA, does this FPGA do some validation? (like nonce checking, etc?) or is it just to communicate with the I2C devices?

Also, what's the purpose of the RX and TX pins? If there's already an I2C bus, why have another serial port between the controller and hashboards? For what purpose is dedicated the I2C bus and the Serial bus?

Also, what's the pinout of the hashboard beaglebone connector? is there a way to prescind the beaglebones and use a "full" computer to control a lot of S5 hashboards from, say, a linux computer?

So many questions! Sorry

@pekatete,

dead fan, we do offer replacement.  The fans used on Antminer is not an easy one to find as it uses 4 wires and high RPM.

We are sorry for the inconvenience.  Our USA based team can take care of you faster usually and they are available 24/7.

Not sure you are thanking me, but I'll accept anyway; You are welcome.
The 52 refered to is the top temp, i.e with that configuration, the temps never go above 52 during the day (and currently  below 48 at night). I actually believed 52 was a brilliant top temp, but I've not had a different temp to compare with as my S5 shipped with a stone dead fan that never turned a fin in anger! I was advised to buy one from the local market (without any hint of irony or any offer for a replacement .... not even a voucher offer!).

Thank you for the stats!!

52 is a bit warm but it is well in the range.

A lot quieter than the stock.

Well, got my miner.  Hashing away at specs.  It is a new machine.  The delta is pushing and the stock is pulling.  

53/58

Fan 1 - 2880

Fan 2 - 3960

That stock fan is a banshee, glad they are in the basement.  I might just replace the stock fan also

almost all Antminer will be tested for about 24 hours prior to be shipped out as a part of Bitmain's quality control process.  

On late friday batch could be sit on the test floor over the weekend, may gather more dust than the weekday batch.

We are constantly working on quality improvement and if we can fix the dust in the air, it will be fixed!  

The testing floor has many open windows where outside dust comes inside.  In China, this was same every year and it is SAND STORM month at the moment.  If the miners were tested near the window, there is a chance that it may have more dust build up and if the miners are from the center of the test zone, less dust.

It goes though a belt system and then packaged by hands. (Its not packaged by robot as other electronics)

Shenzhen, China that is where the factory is located and it is just out side of Hong Kong and it is hot and humid at this time of the year.  (Some quality control stickers may have been placed and then slipped as miners being grabbed by hands and then be packaged into the bubble wrap bag, then on to the box, then the box to be taped up.

Bitmain hardware is guaranteed to hash at the advertised rate upon delivery and it comes with 90-day replacement warranty from the shipping date.  We package each miner to withstand strong turbulence and football being played with the package by the carrier but we can't guarantee cosmetic quality control stickers to be in place at the time of the delivery.

Also, BATCH IDENTIFICATION.

PCB version is not the way to identify what batch the miners came from.  PCBs are mass produced ahead of time and being used based on the specific components availability.  There are many different version of S5 hashing PCBs based on the different components and there fore different versions.  (Different print date PCB could be in the mix)

As you may notice, each hashing PCB uses the same little components many times repeatedly and total counts do add up and go though the parts really fast!

you think that you are the first one who posted this? most people don't care much (maybe a little). If you had a DOA miner or miner with some difficult to reproduce ailment, then it matters. A bit of dust? people here are mostly (not completely) indifferent to this.

There are 179 pages in just this thread, and hundreds more (if not thousands) where your so called important information has been exhaustively commented on. You seem to be on a new account (not sure that equates to being new here), so before you castigate anyone and / or lay claim to being the clearest mind on the forum (I concur, being here can muddle your thinking), we are all eyes for your pearls of wisdom!

Its clearly a different board rev, are you sure that its actually used beyond a burn in period?

So no cares? Everyone here just talking about fans. I think they are missing the important information and a little delusional.

don't worry yet. if tx is on the blockchain, they will adjust it manually within 24 hr.

It's probably from one of their data centers.  They mine with them for a while until the machine paid for itself (not long since cost = manufacturer's cost) and then resell at full retail.