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Bitmain also offered me an S5, no strings attached. So here is my initial review.

Setup was easy. Plug it in and turn it on. DHCP grabs an IP address. My router identified it as "antMiner". Hit the IP with the browser and configure the web interface for pool credentials. Username and password to get into the web interface were root and root.

This new S5 is not quiet. The 120mm, 4200 rpm fan is loud. But sitting in a 40c room, the ASIC temps are reporting 62c, so it's looking nice and cool.

After running for an hour, it settled into:

Miner Speed: 1155 GH/s
BTCGuild Speed: 1145 GH/s
Power: 675 W (750 W Bronze PSU)

Power consumption is a little high due to the cheap Bronze PSU. Switching to my Platinum PSU should reach the advertised 590 W.

Initial opinion: Good efficiency, easy setup, meets advertised specs.

After some further testing I'll offer a comparison with the SP20.

Do you need to use all four PCIE cables or 2 for stock?

When you say it is loud, is it louder than an S3 or quieter? Thanks for your quick review.

it is far louder then the s-3.

I am philipma1957.  I went to my other pc this only allows my backup account.

the s-3 is nothing compared to this.

if you want this in your house it will need fan mods.

In a shed or a barn  no big deal

server psus and cables.....  Similar to SP20 draw per cable? I wonder if anybody has taken any readings yet. 

67 or so DB? Like a truck driving by or your boss telling you to get off Bitcointalk again. 

Okay just got back home from a party. I need to find a few other fans.

 at freq 250 I do 824 gh and 404 watts that comes to .49 watts per gh.

 I bounce to 416 watts which is .504  watts per gh this is good.

It will run too hot with my current fan setup if I go above freq 250. temps are 60c and 57 c

It is too  loud stock!  it runs hot at stock speed with stock fan. stock fan ramps to 3800 rpm and temps were over 60c for each board.



 if you want db's 75 plus it is a nasty  pitch.

my complaint is really simple here 2 silverstone 140's would allow it to run max speed and quiet. A no brainer 1 minute mod.  instead I will need to fuck around with it.

If noise does not matter run it stock.  It is louder then the s1 or the s3 it is as loud as the asic miner tube.  So far at 225 ,250, 275, 300  and stock 350 it scales close to .51 or .52 watts

per gh. I am looking at the stock fan and it is a bizarre fan.  It is 38 mm yet has 1 inch deep blades I have never seen a fan like this. I have to go back and correct part of the review.

3 shots of the  my wife will kill me sounding  stock fan.  it has 38mm depth with 25mm blades then 13mm focus grill. it was pushing 3800 rpm at freq 350 worse sound of any fan I ever use for a miner.

Both miners have 4 power connectors. The SP20 can draw significantly more power per cable.

WOW! Loud.

Interesting.

Thanks for the information. Does that mean by comparison the SP20 is quieter?

To an untrained ear I would say they are comparable. The S5 has a higher pitch.

Hi Syke,

Thank you for the review posting!!   :D

I understand you're imitating our marketing techniques, but why did you copy the miner loudness ?  ;D ;D ;D

4 cables at the kwatt meter = 552 watts  so 552 x .92 = 508 watts / 4 = 127 watts at the cable.

it must use 4 pcie cables 2 are not safe.

I am at freq 231.  I will test faster in 7 hours or so .  time to crash. I am tired.

Would I buy these yes , but I know I am changing out fans.

If I do buy some.

@ bick

is the sp20 not as loud.  if you down clock to better power numbers  like 1000 to  1300gh  it is better for sound.  I can spend $0 extra money  on a sp20.  but I can't see that with the s-5.  

Now all of mine are in a home that I share with the wife.  We will be able to sleep tonight with no noise issues since I swapped out the fans on the s-5.  I am running 7 underclocked sp20's no extra money for sound mods need . Just down clocking.

  For most of us that buy it the game with the s-5 will be what is the cheapest fan replacement that allows a good clock and decent sound.  I spent 27 for the two fans.  10 on ebay for the delta and 16 on amazon for the  silverstone.

Syke thanks for review.  does your stock fan look like mine?


 case is 38 mm but blades are 25mm?


https://bitcointalk.org/index.php?topic=907219.msg9980310#msg9980310

I understand you're imitating our marketing techniques, but why did you copy the miner loudness ?  ;D ;D ;D

Does anyone else here have a 50A+ adjustable power supply? I'd be interested to see some efficiency numbers in the range of 9V-14V.

Now that they have a good ASIC, I would hope they have a board in design that can adjust voltages. This would be a perfect setup for the S6.

... if they have spontaneous combustion issues with the S5 ...

So SP, does that mean since everybody is copying, you are going to lower your price and actually report your SP20 as a 1.1-1.3T miner? :)

ASIC temp: 69c
Board temp: 75c

I understand you're imitating our marketing techniques, but why did you copy the miner loudness ?  ;D ;D ;D

One can only hope  ;D

Gotta learn from the master! 

Dude. Not cool.

As long as BitcoinWarranty / Yoshi are taking it with Humor (and they do), it's ok.

As long as BitcoinWarranty / Yoshi are taking it with Humor (and they do), it's ok.

Humor is okay! 

I don't think he really means to hope our hardware to catch on fire!  We know he is not that evil!  Good group of guys over there, too!! 

He has a bitter experience with that already... 

Bitcoin World is evolving so fast and most of us works 24/7 non-stop with naps in between with super charged coffee or caffeine loaded drinks, we have to have humor and be positive to stay healthier 


YOSHI from Bitmain

*normally support staffs are monitoring this account... 

Bitcoin mining will come with noise hazard and heat!!!  for commercial mining operations you'll need the ear muff, no matter you use S5 or SP20.

I think this is where I take both you and SP-T to task for implying the S5 and SP20 are 'home' miners.  I unconditionally agree regarding commercial operations in data centers, server rooms, garages, etc.  But 'home' miners are in the home.  At stock settings, I believe neither of these would fit that category very well.

:'(
As usual, S5 will get better and better!

I think this is where I take both you and SP-T to task for implying the S5 and SP20 are 'home' miners.  I unconditionally agree regarding commercial operations in data centers, server rooms, garages, etc.  But 'home' miners are in the home.  At stock settings, I believe neither of these would fit that category very well.

The airguides on the fans aren't a sign of a crap fan. They are designed to help shape the airflow and make it more laminar. It gives some of the benefits of  a counter-rotating fan (like the Delta GFBs) without the added cost.

If you have time, use a smoke machine and look at the flow pattern of a standard fan vs one like this or the Delta FFC1212DE. It's pretty interesting.

<snip> ... </snip>

I think this is where I take both you and SP-T to task for implying the S5 and SP20 are 'home' miners.  I unconditionally agree regarding commercial operations in data centers, server rooms, garages, etc.  But 'home' miners are in the home.  At stock settings, I believe neither of these would fit that category very well.

as part of my thanks for a demo unit i advised bitmain several things to make this a "home miner" (as it is the S5 is excellent for large deployment i think). I suggested a S5-silent model that costs $20 more and includes:
1) top and bottom shrouds made with the same light durable plastic as the sides. nothing fancy or bolted down zealously.
2) a second fan, OR adjusting the temperature monitoring and PWM control to keep the fan speeds down (running at 3000RPM for 40C is silly, 2000RPM and 50C would be more like an S3)
3) default speed of 325MHz. a few percent cooler/slower/quieter and easily ovewrclocked at the expense of noise

Overclocked to 400 MHz and still stable:

Ambient: 40c
ASIC temp: 69c
Board temp: 75c
Performance: 1320 GH/s
Power: 775 W
Efficiency: .59 J/GH (low efficiency Bronze PSU)

Over 1.3 TH/s easily achieved!

these setting are almost like my SP20 in power, hash and temp. Care to report noise vs SP20?
Are you doing it on 750W bronze or higher wattage bronze?

Noise is comparable to SP20 (both systems all stock hardware).

So far all my testing of this S5 is with the same 750W bronze PSU. Only 1 change - adjusting clock speed in the web UI dropdown menu. The dropdown lists speeds up to 500M, but I really don't expect it'll go that high. That would be over 1.6 TH/s!

Once I find the limits of this configuration, I'll try a platinum PSU to see if there's any more headroom for overclocking.

i topped out at 356 using the silverstone fans. i hated the sound the stock fan makes

I'm happy with it at 400M. Any higher starts getting hardware errors which doesn't improve performance.

i dont get much HW errors, but hashrate seems to peak at 412MHz, at 425MHz its back down around the same speeds as at 400MHz

Can you try it at elevated voltage and see what happens?

not sure how to easily do this without a PSU capable of 13V at >60A, or even colder intake or higher airflow. temps are 55/53C with the back end of the heatsink reading about 33C where it contacts the PCB. using a cheap infrared thermometer, readings on the PCB range from 45-65C

I thinking he may be suggesting an adjustment in the software setting voltage (ie, as in the advanced settings on the S3+'s new firmware), I don't think the S5 has that option.

No, I was suggesting upping the actual voltage. Klondike uses some server PSUs and many of them can trim the output voltage a bit.
I have a few big adjustable supplies, but there's probably some leeway there for adjustment.

I was actually blowing off my deck today and wondering what -20C air fed through a gas powered leaf blower would do. :)

I went to change the password to the webgui and got an invalid password (root/root which let me in).

I cannot login via SSH?  Am I missing something different on the S5s?

Can anyone confirm the 0.2J/GH mining efficiency @ 9 volts made by Bitmain ?

Yeah, I can't ssh in with root/root either.

root/admin, its a beaglebone like the S2/S4

I can give you DC efficiency numbers, I have a nice 0-16C, 0-50A linear supply. It would be wildly inefficient compared to an ATX supply though, so for at the wall numbers you'd have to go based on your PSU efficiency.

Bitmain's not shipping my units until the 4th though.

No, I was suggesting upping the actual voltage. Klondike uses some server PSUs and many of them can trim the output voltage a bit.
I have a few big adjustable supplies, but there's probably some leeway there for adjustment.

I was actually blowing off my deck today and wondering what -20C air fed through a gas powered leaf blower would do. :)

Don't try outdoor fed air, too much moisture unless filtered somehow.  May work for awhile but eventually leads to corrosion.

I understand you're imitating our marketing techniques, but why did you copy the miner loudness ?  ;D ;D ;D

Don't try outdoor fed air, too much moisture unless filtered somehow.  May work for awhile but eventually leads to corrosion.

I guess it will depend if they have spontaneous combustion issues with the S5. I don't imagine they'd want to go back to buying VRM components for the S6 unless they need to.
What they might do is include a server PSU where you can trim the output voltage through PMBus instead of an ATX supply, but I wouldn't hold my breath on that one. :P

It will be interesting how the 9V or variable PSU thing works out. At the moment there's no supply, model, infrastructure or experience with them - but now there's a market.

so both of you could afford a beer at the end of the day :P A way to cut costs... hearing is overrated from a designer/engineer perspective. Cost from a managerial perspective.  

Or if you want to get really creative (and adventurous), wire 3 12V supplies in series similar to what the RC guys do, and then string together 4 S5s. ;)

Edit: Don't actually do this. Things will blow up.

I dont think you can safely drive that much wattage through the S5 units like that. (if you wanted to try, you could run both blades of an S5 in series on 24V)

There's very little humidity in the outside air here. There's as much actual moisture in the air at -20C and 90%RH as there is at 10C and 10% RH.

Yes but I live in the Pacific NW.  My bad for assuming these conditions are the norm.

15A circuit, 1300W PSU, 2 miners living in perfect harmony:

Ebony (Overclocked S5): 1240 GH/s
Ivory (Underclocked SP20): 1140 GH/s

Each miner is drawing 700 W (+/- 2%) at the wall.

ha ha, I have almost exactly the same setup for a pair and a similar thought  ;D.
https://bitcointalk.org/index.php?topic=902305.msg9993723#msg9993723
Once I get quiet S5 fans-will do a second pair, otherwise it would cause some stress during the NY holidays.

Would this work?

http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2104719_-1 (http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2104719_-1)

It's 9 volts with 16.7 amps output but only rated at 150 watts.

Sorry to report that half my SP20 has kicked the bucket. Cycling the power and upgrading the firmware has not helped.

Was it modded ?
Please contact remo@ for diagnostic.