Bitcoin Forum

Greetings, miners!

Finally I got my test unit, later than all others, so let's try to play with it. ))

All of you have seen the S5 many times, so here is only one S5 photo, from an unusual point of view...  :D

http://i62.tinypic.com/s5ee4g.jpg
I've unpacked my new toy, and what do I see? Dust!

http://i57.tinypic.com/290zu42.jpg

Oh, it's a test unit, so it doesn't matter. Besides... Never look the gift horse in the mouth.  ;D

And that plastic side panels looks so... Unreliable...  :-\

I found that the controller board is not neatly connected, but it looks that this is the only possible position:

http://i60.tinypic.com/2uo2e5z.jpg

http://i62.tinypic.com/5djb5c.jpg

Also I found a slot for a flash card, and it's empty.

http://i61.tinypic.com/2r3kx9z.jpg

I thought that "now I need to buy a card, flash it with some image..." But S5 started to work without any of that actions.  :)

Well, PSU is connected (Chieftec APS-850CB if any - 850 W, 80+ Bronze, two 12V rails, and it has 4 (!) separate PCI-E power cables). Let's go!

...After switching a PSU on I realized what does it mean when other forum members writing in their reviews that S5 is loud. YES, IT IS.  :( Especially right after powering on. It became a very little bit quieter after several minutes, but I still can hear it from another room even if the door to where S5 placed is closed. It's like a vacuum cleaner, someone already told this before... I have no a noise meter (and I doubt that I'll measure any new values, they all has been measured before me), but if anyone need, I'll take a noise meter for a while.

Right out of the box, at stock frequency 350 it gives about claimed 1.1 Th/s at Slush's pool:

http://i57.tinypic.com/2ebs2tj.jpg

Average speed in miner's GUI is a little less...

Working on BTCGuild pool the numbers are the same:

http://i61.tinypic.com/2prv048.jpg

At BTCGuild's side:

http://i60.tinypic.com/14mjpu.jpg

Power consumption at the wall is 616 Wt with my PSU and at stock frequency.

Well, same value claimed at BITMAIN's website:

http://i62.tinypic.com/25iunog.jpg

It's all on stock firmware:

http://i61.tinypic.com/vxn8uu.jpg

Now let's try to update the firmware to newest version (in my case it's SD-S5-20150107.tar.gz) and see what will change. I've upgraded FW strictly according to S5's manual, and everything has been finished quickly and fine:

http://i60.tinypic.com/2pot98l.jpg

After a while I found that cgminer uses only half of controller's CPU time - before upgrade it was 90:

http://i59.tinypic.com/357rj2w.jpg

May be it's OK, I don't know, probably only Bitmain knows...  ???

Hashing speed seems to be the same with this new FW, but there is appearantly less discarded shares quantity (calculating to discarded shares per hour). Sure ckolivas knows why. )) May be it's because of newer cgminer version (4.8.0 in this firmware)?

After 47 minutes on BTCGuild:

http://i60.tinypic.com/33zboma.jpg

http://snag.gy/LvGCP.jpg

With normal temperature in the living room the boards of S5 are 51 C and 55 C with this stock fan. And it looks like huge part of air from the fan is blowing away upward from this open semi-case (since my S5 is placed at the glass shelf for TV and audio equipment), so the idea of making a kind of cover is looking not so useless...

I have the Navipower HDB-1212UA fan (it's very medium-priced but... 2800 RPM... 105.81 CFM...), will try it later. Another fans are coming too but not yet in my hands...

http://i57.tinypic.com/6iv1ah.jpg

If S5 be able to work with reasonable temperatures using that fan - it would be great.

Later I'll share another results of testing and experiments. ))

Now several words about overclocking.

At frequency 400 we can see average speed at miner's side about 1.3 Th, and 1.36 Th at BTCGuild side:

http://i59.tinypic.com/ofvx53.jpg

http://i57.tinypic.com/2jfpfs.jpg

Comparable values we see at Slush's pool (they are a bit lower again - why?..):

http://i62.tinypic.com/1z3pev4.jpg

http://i57.tinypic.com/i1jkoz.jpg

Further increasing of frequency (to 412.5) gives us almost same hashrate while the temperature slightly rising up (about 1 degree on each blade; but it looks that it's just because of opening and closing the door):

http://i62.tinypic.com/30ucrxy.jpg

http://i60.tinypic.com/63ykvo.jpg

If we can trust to M's Ant Monitor, there is no any huge HW error rate at 412.5 frequency. So why S5 can't increase the hashrate?..  ???

http://i57.tinypic.com/2h3rasy.jpg

The same at Slush's, nothing new.

http://i58.tinypic.com/rhrfyx.jpg

http://i57.tinypic.com/2ez5xz4.jpg

http://i61.tinypic.com/2444qhd.jpg

Further increasing of frequency (to 425) gives us completely nothing but more HW errors:

http://i61.tinypic.com/ofdmxf.jpg

http://i61.tinypic.com/2ezrbyf.jpg

So we can conclude that 400 MHz is a limit for in some way effective overclocking in the hashrate rising sense.

I don't care about power efficiency, my opinion is that I should mine as many BTC as possible and as soon as possible. And come what might!  8)

P.S. after all that I made some additional measurements at miner's side (I started to measure HWE with M's Ant Monitor a bit later, after measurements for frequency values 356.25 and 375), about 1 hour and more for each frequency:

Frequency 350 (default) - 1157+ Gh/s, 0.0001% HWE (1 HW per hour), 616 Wt
Frequency 356.25 - 1160+ Gh/s, 616 Wt
Frequency 362.5 - 1200+ Gh/s, 0.0004% HWE, 626 Wt
Frequency 368.75 - 1200+ Gh/s, 0.0004% HWE, 639 Wt
Frequency 375 - 1220+ Gh/s, 647 Wt
Frequency 381.25 - 1250+ Gh/s, 0.0045 HWE, 657 Wt
Frequency 387.5 - 1270 Gh/s, 0.0093 HWE, 665 Wt
Frequency 393.75 - 1270+ Gh/s, 0.0156 HWE, 677 Wt (upd: 1288 Gh at PMpool.net, diff 4096)
Frequency 400 - 1300 Gh/s, 0.0258 HWE, 687 Wt

At frequency 400 and with PSU Corsair RM1000 80+ Gold power consumption at the wall is about 666 Wt (peak value), hashing speed is 1301 Gh/s (after 11+ hours of running), and HWE is 0.013%.

Interesting thing is that temperature of blades remains almost the same at each frequency while the fan's speed is constant (4080 in my case)... For last value it's equal to 53 and 57 C.




p.s. I found one strange fact. At frequency 400, right after power up power consumption is about 100 Wt (at the wall with 80Plus Bronze PSU I mentioned before):

http://i60.tinypic.com/2lj70hs.jpg

After a while in idle mode (here I mean that ethernet cable is not connected to S5) power consumption is... Guess how much?..

http://i60.tinypic.com/bhknz9.jpg

It's an upsetting fact... After ethernet cable connection power consumption increases a little, and finally at 400 MHz frequency it's about:

http://i59.tinypic.com/2mwba7t.jpg

Why S5 doesn't became REALLY idle of it has no connection to Internet?..  ???

Well, I have replaced the fan with Navipower HDB-1212UA as I promised before. It's 3-pin fan and I have connected it to controller board instead of stock fan (there it is, laying on the floor).

http://i57.tinypic.com/2nkqglf.jpg

http://i62.tinypic.com/28lq92g.jpg

There is no need to cut something or to find any special ethernet cables:  ;)

http://i58.tinypic.com/2u6h2jl.jpg

1 hour and 30 minutes of silence:

http://i59.tinypic.com/144b2m9.jpg

http://snag.gy/QGrM2.jpg

Sure the temperature is a bit higher than we want to see, but the only noise S5 generates now is like a noise of a PC under some load.  :) If I place it to more cool environment the values will be 1-2 degrees lower.

Later I'll try some another fans as they arrive.



Update: here are the results of another fan change, this time to another cheap fan Gembird DC120SF-12AS3 (120x120x38 mm, 3000 rpm, 124.74 CFM) for air intake:

http://i61.tinypic.com/i35ezd.jpg

S5 became much louder than with Navipower HDB-1212UA, but still a little quieter than S3. Now let's take a look at temperature:

http://i58.tinypic.com/2dqoz1j.jpg

From 6 C to 7 C less! Good, but still not enough.

Later we will try two fans configuration (2 Gembird DC120SF-12AS3 and 2 another inexpensive fans NaviPower HDS-1212MA). I remind you that goal is to strike the happy medium between noise and temperature of the blades.  ;)

Experiment 1.

I wanted to direct more dense airflow between the radiator fins, so I pasted an insulation tape stripes on side gaps under the fan, in this way:

http://i61.tinypic.com/25ugm78.jpg

Well, it looks that there is nothing that needs cooling (because there are no any heatsinks ore something like that, right?  ::)), so more dense airflow should cool down the chips under the big main heatsinks more effectively, right? That's how I was thinking then...

The fan remains the same as before - Navipower HDB-1212UA. With that blue stripes on side gaps S5 became a bit more noisy and started to mine. BUT:

http://i61.tinypic.com/b4aw5l.jpg

Investigating this I found that air blowing through that side gaps cool down that little elements (I am not familiar with electronic components) which seems to be a power-operated element.

http://i59.tinypic.com/2hq43d4.jpg

They are very hot, something about 80-90C. It means that I should find some little (copper, I believe)  radiators like those being sold im many places:

http://www.newegg.com/Product/Product.aspx?Item=9SIA2RP14G1571&cm_re=chips_radiator-_-0Z5-000E-00003-_-Product (http://www.newegg.com/Product/Product.aspx?Item=9SIA2RP14G1571&cm_re=chips_radiator-_-0Z5-000E-00003-_-Product)

and stick it with thermal glue. Anyway it is a good mod to make.  8) And I recommend it to all who buy the S5. The more heat removal - the less failures of your miners...

p.s. now my S5 is OK and waiting for another experiments.  ;D


Experiment 2.

Still have no time to describe it, but I replaced the thermal compound, twice, and with AlSil-3 my results are not so good as I expected (too low thermal conductivity...). And with Arctic MX-4 I just achieved the same temperature as with stock thermal grease... Seems that Bitmain use GOOD thermal grease. )

 More details will be here later.

Your fan speed it abnormally high as even OC at 375 freq mine does not go about 3600 but then my temps are 49/48. So I take it you have it in a warmer place than mine?  

EDIT: my fan is staying at 3480 after the new firmware but hashing a little less now at 1230 GH at 375 Freq

Yes, my S5 is placed in in the living room temporarily, and I am closing the door to that room from time to time to avoid listening that hoover...  ;)

And such warm ambient is good for my gouldian finches.  :D

http://i58.tinypic.com/2epsm4k.jpg

http://i57.tinypic.com/ziwp3b.jpg

Awesome review. Thanks. Here's a question that will leave me feeling either very dumb or very bummed:
Do you need to do anything else after connecting the Ethernet cable and 4 PCI-E 6pin cables, plugging in the PSU and flipping the PSU switch on?
Because I've done that with both my S5s, using 3 different PSUs (2 of which are brand new), and neither are turning on. So my hunch is my S5s came DOA, unless I'm missing something.
Anything stand out to you that I could be missing?

Did you paperclip the PSU's?

EDIT: need to paperclip the green and a black wire (either side of the green) this acts a the switch on a computer since there is not one. Then you can use the switch on the back of the PSU to turn it off/on.

The free Android Sound Meter (https://play.google.com/store/apps/details?id=kr.sira.sound&hl=en) app works pretty good.

Never been so happy to feel dumb. Thanks buddy! It really does sound like a vacuum, its so loud

You wouldn't believe, but my first Android smartphone that I have ordered before New Year holidays hasn't been delivered yet.  ;)

I can not find that fan in North America. A Google Search just takes me to Russian sites. An English-only search just leads me back here. Is there an equivalent on this side of the ocean?

EDIT: How many RPMs does it give? I have found equivalents.

On this photo you see the stock S5 fan.

You can replace my Navipower HDB-1212UA with any 120 mm fan which:

0) has 3 or 4 pin connector and better if it is PWM fan (you should cut one leading plastic sliding rail in case of 3-pin connector);
1) can spin at 2500-2800 rpm (Schytche Ultra Case maybe?);
2) can provide 100-130 CFM airflow (many of forum members are using Delta fans);
3) as quiet as possible amongst meeting the above conditions fans.

It was hard to find an airflow value for this fan, but I did it, I found it in some chinese catalogue. It says that this fan gives 105.81 CFM and spins at 2800 rpm, but miner's GUI displays 2400 rpm.

PM me if you need help searching such fan(s).  ;)

I should be able to find one now. I have one S5 on order as a test and will go from there.

Thanks for the help!

Scythe Ultra Kaze did not work well in push orientation-see my post on main S5 board.

Great review! Thanks for taking the time to write and post. Are you able to measure power draw at the wall?

Unfortunately no... If I decide to buy a power meter, it will be shipped from Moscow and it takes about 4-7 days!

Now I got this marvel of Chinese craftsmanship:

http://i62.tinypic.com/zntrlz.jpg

http://i59.tinypic.com/11gmu5w.jpg

I don't know how accurate it is, but all my posts in this review will be updated with it's measurements soon.

I have also ordered a little radiators for my next cooling mod. They will arrive in 10 days.  ::)

Any updates on your cooling methods?

I am waiting for Arctic Silver thermal adhesive to arrive. Little radiators are already in hands so on 26.02 or 27.02 there will be some update.  8)

Danke vielmals / spasibo for your most excellent thread.
Are you certain that these stock fans are 105 CFM?
The 3 howling banshees in my basement are between 72 - 78db with the stock fans and NEVER EVER seem to go at less than 3800 rpm (not overclocked either, all is stock) at a temp of about 48 - 52C.

I don't understand why a scythe rated at 133cfm is not sufficient for cooling as some users have claimed in other threads.
I expect some used Apple 4 pin Delta AFB1212HHE-F00 sometime this week, that are rated
2900 RPM 120.07 CFM  44 dBa and hope they will do a better and MUCH, MUCH less noisier job.

I'm also not as brave as you to run the miners at anything over 70C.

Thank you for your courage, and I will be looking forward to your further documentations of your experiments. (are you giving the vertical orientation of the miners any consideration?)

mit Deutscher Liebe von Kansas USA :-)

Hi! Glad to see your post here!  ;)

That was a reply to this post (https://bitcointalk.org/index.php?topic=919018.msg10112954#msg10112954). There is the stock fan coming with S5 on the photo. It's about 140 CFM (https://bitcointalk.org/index.php?topic=902305.msg10081932#msg10081932). As for the Navipower HDB-1212UA fans - they seems to be 105 CFM. But now my choice is cheap but effective fan Gembird DC120SF-12AS3 (you can see here (https://bitcointalk.org/index.php?topic=919018.msg10095261#msg10095261) the results of using it). Even two of them since I moved the S5 from living room to another place where the noise is not the problem.

How has it been believed by them that 133 CFM rated fan was not sufficient? May be the reason is unsufficient static pressure level?.. I don't know...

Yeah, they should.  :)


If the datasheet of BM1384 chips is correct, 70C temperature is not a problem. But sure in case of silicon-based circuits we should seek for lower temps... But the noise...
You know, in case of aluminum heatsinks it should look like in Avalon4 - less quantity of more solid fins (maybe narrowed to the ends).

https://i.imgur.com/brwCMfF.png

In case of S5 we somewhy have high temps and high noise. It's inevitable.


How can it help, especially in case of not so appropriate heatsinks?.. I think that if you can place them in that way, vertically-oriented, it's better that horyzontal orientation, bot not so much better.  ::)

Thank you for your kind reply.
I completely understood the CFM for the fans wrong, thank you for clarifying... the 105cfm is for the 'replacement' you used. Now it makes much more sense
that the Noc/scythes aren't sufficient... neither is reaching 140cfm. Different Delta's than the ones I ordered  get to that number, but at 4000 rpm the noise
must be pretty much the same. Push/pull with an open case doesn't make sense to me.

I agree that the Avalon appears to have a much better cooling fin design and should cool with much less airflow.
I will try the vertical arrangement of the S5's once the fans are here, every little bit helps at this time, but I might have to consider different miners for
home usage. It seems most of them are designed now for large scale operations where noise is less of an issue.

I will watch for your further posts and I might post to your thread the experience with the new fans.
Ha здopoвьe

I am too lazy to repeat the message here,
but thank you!!!!!

https://bitcointalk.org/index.php?topic=945775.msg10561128#msg10561128

Hello, guy!

Could you tell me the dimensions of the S5's hashboard and it's radiator?
Length x Width x Height.

https://i.imgur.com/lZmXzh2.jpg

Just a spot of info...
I received the box of Delta's 1212HHE and they are of no use.
These are Apple Case fans and come with 4 pin connector (and ALL black wires), but the S5 will not drive it.
I possibly could figure out how to make them go at a fixed speed, but at 55 I'm too old to fiddle around with things I don't WANT to understand.
I tried to liberate that 'pig' in the wall 50 years ago with a 'match', holding the match head between my fingers, just to be 'lucky' and hit that
HOT wire on the first try, finding myself 4m away upside down the opposite wall with the the burning match between my fingers.
(the ass whopping from dad 'cured' me indefinably from 'messing' with wires and electricity to this day)
I admire people that whip out these fancy measuring devices and know how to splice wires etc to make something go.

I am going to shop for something that works out of the box ... (not having Navi in the name though)

Let me know if you come across some viable solution to this noise pollution besides building a new shack in the back yard and run wire to it.

I tried to liberate that 'pig' in the wall 50 years ago with a 'match', holding the match head between my fingers.

Liberate a pig in the wall???

Mining makes people crazy.  ;D

Grew up in Germany and if you look at the wall outlet it 'resembles' the nose of a pig, sort of...

Now I am in the US and the sockets only have slits not round, dark, mysterious little holes.

I can assure you though, that 220V has more umpf than 110V ;D

I did that 220V experiment at least twice ... second time I saw openings in my table lamp next to the bed and decided to 'poke'
in one with a screwdriver that came with my steam engine....

Me and electricity is like water to an oil fire :D

Hmmmm, I thought you have to be crazy to mine ;D

Just to help-want my noctua and scythe fans? i sold my s5 without them, so i have them lying around now (two noctua and two Scythe's).
Noctua 3000 for push+Scythe for pull work at setting 350 producing 1150GH with much less noise (as long as ambient is below 30C). I have hashing records.

Hi Biodom,
what you're asking for them? Shipping in the US?
I am near Kansas City, zip code 66062.
Paypal would be my preference to pay for them and it would give you the verified shipping address ... don't think this needs to be escrow'd

Ordered a Delta AFB1212SHE-PWM yesterday which is supposed to be sufficient with only one fan, but I have 2 other S5's that could use a fix.

paypal is OK, i PM'ed you re price.

I received a Delta AFB1212SHE today and put it straight to my noisiest S5...
stock fan replacement only - no push/pull

It does need a minor modification but otherwise works rather well.
2 ridges on the connector need to be trimmed down and it will fit straight to the pins.

At this time the S5 runs a bit warmer by about 4 degrees C at 3260 rpm, but with roughly 20db less noise.

I'll proceed to replace all S5's with these fans...

Anybody know if the S4 fans are the same as the S5's?
(of course needing an extender for the rear ones in the S4)

Only one ridge may be cut off.  ;)

I'll be damned, never bloody occurred to me!!!!
Genius, I'll tell you, pure Genius you are :-) ::) ;D :-\

Hashing board itself: 250x135 mm. Radiator: 250x115x37 mm.

Thanks a lot!

I am glad to see that this information was useful for you.  ;D

My new S5s has arrived yesterday.

Shipping was very quick (the order has been paid at May 23rd, shipped at May 25th). It looks that the packages are not being packed well enough as before:

http://i58.tinypic.com/14kjkah.jpg

But S5s seems to be brand new units with v1.91 blades:

http://i62.tinypic.com/144ps4.jpg

http://i59.tinypic.com/14iq6tl.jpg

So now I can really stick the radiators on that copper plates.  :) But it looks that this is not necessary, take a look at the temps:

http://snag.gy/GRsH6.jpg

Both units has the noname fans that differs in details from each other and my first S5's fan. I put into work only one unit untill now and I have to say that it's fan is much, much quieter then I expected. I can hear it from another side of the house though.  :)

Now Bitmain invented new way to connect to the miners - using the button on it's I/O board and IPReporter sowtware (since the miners use DHCP by default). But I was not able to discover brand new unit because only my old S5 was reporting it's IP address constantly to this sowtare. In spite that it has no special button for IP address reporting. So the only way for me was the list of DHCP leases of my router...