[Review] Bitmain Antminer S5 - A wonderfully modable and well performing miner

[Biodom]

I know this post is old, I am new to overlocking too.

I just picked up 4 of these miners very loud, so will be getting replacement fans.

I have free electricity, does anyone have a guide to how to best overclock these miners? Do I just turn the frequency up? What is the safest level to do so?

Thank you.

Basically, yes, in advanced settings as long as temperatures are at or below 60C (or <65C if you want to push it).
Typically, replacement fans result in downclock, not overclock, but you save your eardrums-a pretty good tradeoff, in my opinion.

[1714128089]

1714128089

[1714128089]

1714128089

[1714128089]

1714128089

[kopam]

Hm and what if i do not care for the sound ?

Are there options to put in more " powerful " fans to bring the temperature down ?

[nbruce]

Hi,
I've had one of the S5s for a week now.
I'm not over impressed really. The hash rate starts high then tails off. One blade stops behaving with individual asics dropping out periodically. I've fiddled with swapping psus and leads even moving the stock fan power lead to the other connector. I managed to get it running stable using the 362.5 overclock speed but it still only hashes at around 1050 GHs max. Then tonight it just seemed to die with no access to the control panel via the web interface. I went and checked on it (it's in the garage) and it was alive all lights and fan on but obviously not responding. I had tried a reboot via the control panel but it made no difference. Only a hard power down brought it back up.
Have I bought a lemon ?

OTOH, my two S3s are still hashing away merrily and have been since I got them.

To be honest, apart from the lower power consumption, the S3s do just as much work on average, a steady 400+ each whereas the S5 averages only around 800.

Ebay I think. I don't expect to get much joy from Antminer, but I'll try.

Any tips would be nice though :-)

[Rabinovitch]

I know this post is old, I am new to overlocking too.

...does anyone have a guide to how to best overclock these miners? Do I just turn the frequency up? What is the safest level to do so?

I have. You can look at my S5 overclocking results and see that there is no sence to rise the frequency above 400.

[Swimmer63]

I know this post is old, I am new to overlocking too.

...does anyone have a guide to how to best overclock these miners? Do I just turn the frequency up? What is the safest level to do so?

I have. You can look at my S5 overclocking results and see that there is no sence to rise the frequency above 400.

Rabinovitch has a lot good data on that link.  His little table showing the results of various frequency settings I find to be accurate.

Personally, I put all my S5's at 375 with the stock fan.  The temps never get higher than 51 and on average I am getting 1250 gh/s at the rig and that or higher on BAN and Ghash.  I am not a slush fan, though many are, so I don't have any results there.

But I can safely rent these out at an advertised rate of 1.2 Th/s on betarigs and never have an issue.  Unless my renter is using some wacky pool or mining an altcoin or something.  That's on them anyway.  I just report the speed at the rig and the rest is their choice. 

[SargeR33]

Anybody down in Australia got one of these yet?

[kcal63]

Just an additional thought since I didn't see anyone else mention it yet.
If you leave the stock fan on the S5 and add an identical (or even similar, I tried 3 different fans that were within the same ballpark with the same results) fan to the back of the unit in a pull so that you have the same high flow fans on front and back since the fan speed (and therefore noise) is temp controlled -- almost too well, it changes speed every 30 seconds in stock config -- I have found that I can both clock up my S5 to 400 Mhz and still run sub 60 degree temps while also running very, quietly with the miner clocked at 300 while still getting 990 GH and drawing less than 550 watts.
At stock speed temps sit pretty steady at 45 on both boards and fans run at 2900 for fan1 and 2700 for fan 2 (pull).

[Geremia]

My main criticism of the S5s are the noisy fan and open case. I'd rather the case be completely enclosed with a push-pull fans setup so I could hookup an exhaust pipe to pipe the hot air outside like a dryer does. (I live in the desert where the summer temps can be 115°F and indoor temps almost 80 °F!)

BTW, Happy Easter, everyone!

[valkir]

Hey I installed 2 Antminer S3 fan on a S5. Wondering where in the code we can change de fan top speed ??

That could save me some $. 

[Geremia]

S5. Wondering where in the code we can change de fan top speed ??

That's a good question. I know how to get the fan speed, but not set it…

[_kai_]

Anybody down in Australia got one of these yet?

Late to the party, but... me! 

[fhh]

My Bitmain AntMiner S5 reviews and Noise optimization

http://www.cyber.pe.kr/2015/01/antminer-s5-reviews-and-noise.html


thank you.

How did you connect the noctua replacement fan?
Standrad pin layout does not work for me.

thanks

[beffje]

My Bitmain AntMiner S5 reviews and Noise optimization

http://www.cyber.pe.kr/2015/01/antminer-s5-reviews-and-noise.html


thank you.

How did you connect the noctua replacement fan?
Standrad pin layout does not work for me.

thanks

You sould have got the 4 pin molex

[beffje]

http://www.noctua.at/main.php?show=productview&products_id=80&lng=en

[fhh]

It haves also a standard 4-pin fan connector.
the problem was the NF-F12 did not start before the S5 start mining
maybe the voltage at start is to low.

after a few seconds of mining it starts spinning and works great

[beffje]

If you want it to spin at 100% all the time, then you have to remove the blue cable from the fan. It's much safer to do with noctua. Sometime the S5 goes in safe mode. Then the fan goes off. But the miner keep making heat. Ore you could power your fan directlie to the power supply.

So i strongly recommend this if you don't want to come home some day to a bieping/burning Antminer S5

[disclaimer201]

I would in no case recommend the noctua fans if you run your S5 in a room temperature environment. If you live in a cold area and run it outside underclocked, it'll probably do fine. The noctuas are really great for S3s inside use, for example as a space heater that makes very little noise (and doesn't change noise level all the time getting on your nerves) as long as you remove the blue cable and let them run full speed all the time. Even at full speed, the sound is quite bearable. Again, not for bedrooms or such, but I'd never run any miner near where I sleep.

If you use bitmain's 1.0 A built-in fans from the S1/S3 series or the "ultra kaze" 3000 rpm 120mm fan with 0.6A that should do a much better and quieter job even in room temperature ambient without going to insane noise levels. I run my S5 with one ultra kaze at full speed connected directly to PSU and the 1A fan at 60% via the S5 itself in an enclosed push-pull configuration using a metal cover from one of the S3s.

[enricosofie]

Hi,

I am a novice in the business of mining.
I tried to connect 2 good 3 pin fans to the miner, but it fails to operate.
I get beeps!

If I connect the fans to the miner or the a molex, its the same thing. It start, but stops within a minute.
Temperature remains below 50°C!

What am I doing wrong?

regards,
Eric

[irun4fundotca]

Hi,

I am a novice in the business of mining.
I tried to connect 2 good 3 pin fans to the miner, but it fails to operate.
I get beeps!

If I connect the fans to the miner or the a molex, its the same thing. It start, but stops within a minute.
Temperature remains below 50°C!

What am I doing wrong?

regards,
Eric

if its the system and not just the fan..

sounds like your supply cant handle the current draw in watts

does it boot up, increase fan speed some ,  then a while later go full throttle then shutdown the supply?