Topic: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH - page 166. (Read 451039 times)

What are you using for a PSU?

The major causes were fixed in the January firmware update but there may be some rarer ones still about. A lot of them are PSU based as every unit has a different definition as to what it considers 12V, which further varies on PSU load. That's not something that can be fixed with firmware updates.

SP120s benefit from taping the top and bottom of the heatsinks shut, it improves their performance markedly.

Can you upload a screenshot of the status page please? What is the exact made and model of the PSU you are using?

Thanks.

All O's. I've lowered my frequency and seem to be getting lower but more stable hash speeds (for now). Maybe my PSU isn't up to the task although it is 850watt.

That's default frequency (350).

I'm on Slush's pool and everything has been running smoothly there.  Those temps seem low, which would be true if you'r e not fully hashing.

Hopefully you have all O's in the ASIC Status area?

Anything more than that, is above my paygrade.  Some of the seasoned guys will need to jump in here.

Thanks for replying to me, I've tried Slush's pool and BTCGuild.

Frequency is set at 350M and temps are about 38-42 each.

It could well be the pool you're in.  Ghash was definitely having problems this week.

What pool are you using?  Have you overclocked or underclocked? (what is your frequency set at)

What temperature is the machine reporting?

I received my S5 today and I'm having trouble getting it to hash.

Sometimes it will hash at around 650 Ghash/s for about 5 minutes and then it will be hashing at under 1 Ghash/s for most of the time.

Am I doing something wrong?

Anyone tried interrupting the pulsed power lead to the fan and putting an external PWM fan controller while leaving the speed sense connected?

can't say i have yet to get ripped off by them not saying it won't happen Ive ordered stuff  it just takes so long to get the shipping goes thu  the roof . it can take a month to get some times some TV and PC parts i had to order there couldn't find them any other place . so can't say really what those 1000 reviews run into etc .guess i was just lucky.


Then there is this site I think would only be good if you lived in Canada or the US for the Avon 4.1 ,  opps meant ASICMiner Block Erupter Prisma .

https://www.wtcr.ca/content/asicminer-tube-assembly  I guess to beat out some of the shipping and import tax if any .I think FedEx sewed  me over on the last S5 i bought from Bit main direct then lied to me over on the phone for import tax .

I did the test here's the thread: https://bitcointalksearch.org/topic/noctua-nf-f12-ippc-3000-pwm-vs-corsair-sp120-pwm-on-antminer-s5-974503
Spoiler alert: Noctua wins

@opentoe:

I have the Corsair SP120's in push/pull, and I can say these are definitely not ideal, as they can only keep temperatures in the low 60's when the S5 is downclocked to about 325, for an ambient temperature of about 16.

Note: The Noctua NF-F12 2000, has higher airflow, higher static pressure, at lower rpm's, and lower noise. It is simply a much better fan than the Corsair, period. They do not come cheap though. 

That  does not do the job. unless you downclock.

My current setup has a delta as a push and a silverstone 141 as a pull  55db and allows for freq 393 and 1290gh. 

Has this been fixed?

So, anyone determine if the Noctua NF-12 3000 PWM push pull is a better setup than using the Corsair SP120 High Performance/Static push/pull?

I mean, at full speed the Noctua's are only 43dB and have a 6 year warranty. (This is 3000RPM version. They also make a 2000 RPM version)
The Corsair SP120 are only 35dB and cap out at 2350 RPM and have a two year warranty.

I have used Noctua's in the past and their build quality and performance has always been stellar. I believe they make the perfect cooling fans, just seeing if they are applicable to the S5.
These guys even make a fan that's Certified IP67 which means it is dust and water proof down to 1 meter.


Of course, all this and keeping the temps down to 60c.


If I had the opportunity I would try the Noctua NF-12 2000 PWM model in a push pull config. Not as robust as the 3000 RPM, but it is much quieter.

Noctua NF-F12 2000 PWM
http://www.amazon.com/Bearing-NF-F12-iPPC-2000-PWM/dp/B00KFCR5BA/ref=sr_1_1?ie=UTF8&qid=1425625630&sr=8-1&keywords=noctua+nf-12+2000

Noctua NF-F12 3000 PWM  -   $30 fan here
http://www.amazon.com/NF-F12-industrialPPC-3000-PWM-120x120x25mm-3000rpm/dp/B00KESS6O0/ref=sr_1_1?ie=UTF8&qid=1425625844&sr=8-1&keywords=noctua+nf-12+3000

Corsair High Performance/Static model Air series. I checked over some youtube videos on these very quickly and they are very quiet, but may not cool enough.

http://www.amazon.com/Corsair-Series-Performance-Edition-CO-9050008-WW/dp/B007RESFYK


The Noctua has a higher static pressure of 4.18 compared to the Corsair which has 3.1.

So, who was the ginney pig and tried these guys out? My pick would be to use two Noctua NF-F12 2000 in a push/pull.

Those guys probably got them when bitmain was selling them for $315. $175+ profit plus whatever they mined while waiting to be resold. Wish I thought of it.

Yeah, i would need to sell a kidney to get one of those... j/k

I want it direct from Bitmain, rather have it late than have it wrecked and without warranty.

Never heard of it but that is an awesome site if it is legit. What do you know about it? Of course I have to do the obligatory scam search on the search engines

EDIT: After more than 1000 reviews most people at this site call it a big scam:

https://www.trustpilot.com/review/www.aliexpress.com

That is an excellent mindset to have for a long and happy life!