Topic: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH - page 213. (Read 451266 times)

does changing fans breaks warranty?

https://bitcointalksearch.org/topic/finally-not-loud-antminer-s5-very-cheap-mod-928932

i used 2 quiet 15 blade fans

59 and 58 at 331 freq,this is what I can do now

Its under the mythological 60 

[Just to be clear, when I said "on these chips" I meant "where the sensor is located for the BM1382", rather than "the sensor, located on these chips,"]. I have no information as to where its located.

Is there actually a sensor on the chips? If so, you might get some small hotspotting between different locations on the die, but it should be pretty close.
If they're getting the temp from that LM75 on the back of the board though, it could be wildly different from the die temps. It would have been better in that case if they'd put it on the other side of the board.

Be careful as that's a TJ temp and you don't know where the temp sensor is on these chips. It could be in lots of places which tell us that they're 60C but in reality its 110C at TJ. Pay attention to manufacturers when they quote the max temps for their particular sensors.

That's..... that's a very good idea.



I'm a big fan of fan guards, I'd much rather my fans get blocked by stray pieces of plastic or paper than injesting them. Or injesting my fingers.

I'm scared of upgrading Guess I'll take the plunge. Thanks !

Edit: Updated CGMiner in latest firmware. Cool ! So far so good.
Edit2: Meant CGMiner was updated to 4.8.0 in the latest firmware vs 4.7.0 in the original firmware.
Edit3: Updated both my S5's. Latest firmware is solid

People have reported that the newer firmware solves that issue.

You are wrong, really far away from reality. Problem is that temperature sensor is not inside BM1384 die, but on PCB and it is far away from chips and cooled by fan. Real temperature for me is around 20C higher on PCB under chips (which is still cooler than die temperature). With higher freq the difference is higher. Remember that S5 mounting holes are not perfect for S1 heatsink style.

Reporting in with an odd problem.

One of my S5's went to hashing at half it's capable rate, despite all rows showing o's. A reboot resolved the issue.

Running stock firmware from B1.

About fan guards and noise levels.

I have found that on all of the miners I have owed, they all run quieter without the fan guards. I don't recommend this if you have kids, pets, or are clumsy, but it's a much nicer setup imo.

Basically the fan guards block airflow, create wind resistance, and this creates added noise.

Lowering the noise level of the Antminer S5.

I've been running miners in a 1 bedroom condo, that I share with my girlfriend. I've placed them on top of our refrigerator, in the center of the condo. She works at home during the day, so it's important that they are not too loud.

When I hooked up the S5, I heard the loud whining sound that some people had posted about and knew I had to do something about it. I already had ordered 2 Delta fans off of Amazon, but they had yet to arrive. The were $22 each and are, Delta afb1212she-pwm 120mm x 38mm 4pin pwm+tac sensor extreme hi-speed 3700 rpm 151cfm case fan.

I had seen a post from ckolivas, where they found that the flow divider was the cause for much of the noise and found great improvement in using S3 fans instead of S5 fans. I removed the pull fans from 2 of my S3s and used them to replace the noisy fans on my 2 S5s. So now I have 2 S3s and 2 S5s all with only 1 S3 fan each in the push position. The S3 fan wire connector was not long enough, so I had to cut the end off of the S5 fan, strip the wire ends, and insert them into the S3 fan connector to make it work.

Results on the S3 are, the push fan runs a little faster, but overall quitter, and the machines are only 1 or 2 degrees warmer.

On the S5s, I down-clocked to 300mhz to keep the temps at or below 60C. The fans ran at about 3200RPM but were so much quitter that the stock fans. I was able to run the 2 S3s and the 2 S5s with a noise level that is bearable. Oh and as others have said, the pull fans don't seem to accomplish much as far as cooling, but definitely drive up the noise level.

When the delta fans got here, I tried them on the S5s instead of the S3 fans. The connector is 4 pin and the fans do self speed adjust, but I had to make a slight mod to the connector end to make it fit just right.

Results, 1 of the above delta fans on a S5 is slightly quitter than the S3 fan on the S5. It cools better and can run at a lower fan speed 2880RPM @ 300mhz, compared to 3200RPM @ 300mhz. You can use this delta fan to go back up to the 350mhz stock frequency and still stay at or below 60C in a room temperature room, with about the same noise as the S3 fan @ 300mhz.

So far I'm happy with the following setup.
1 - S5 with 1 of the above Delta fan in push position running at 300hmz mining at approx. 980-990gh/s
1 - S5 with 1 of the above Delta fan in push position running at 300hmz mining at approx. 980-990gh/s
1 - S3 with 1 S3 fan in push position running at 250mhz at approx. 500gh/s
1 - S3 with 1 S3 fan in push position running at 212.5mhz at approx. 425gh/s

I'm in the US, ordered from Bitmain directly, and used EMS because it was the cheapest option. I'm not aware of an EMS anywhere near me, but I figured they might just hand it off to another company, and I took my chances anyway. The results were amazing!

Bitmain shipped through UPS because it was cheaper for them. I had B4, scheduled to ship Jan. 12th. The night of the 12th I was able to see that my packages were at the Chinese customs via searching the reference number on UPS. The packages arrived in my town on the morning of the 14th. It took less then 2 days. I was amazed.
[/quote]

Just for your information, EMS is known as Express Mail Service in the USA and delivered by USPS. One advantage of EMS is that they deliver on weekends and holidays. The downside is the customs fees can sometimes be higher than courier services such as UPS depending on the country delivered to.

I bought miners from DHgate + EMS and I get a lot of tracking info but they don't match situation with Customs office and mail service at my home country.
DHgate and EMS tracking have also different info.
[/quote]

I'm in the US, ordered from Bitmain directly, and used EMS because it was the cheapest option. I'm not aware of an EMS anywhere near me, but I figured they might just hand it off to another company, and I took my chances anyway. The results were amazing!

Bitmain shipped through UPS because it was cheaper for them. I had B4, scheduled to ship Jan. 12th. The night of the 12th I was able to see that my packages were at the Chinese customs via searching the reference number on UPS. The packages arrived in my town on the morning of the 14th. It took less then 2 days. I was amazed.

Any link to watch live?

Yoshi is speaking on a mining panel at TNABC 2015 @ Miami.  Sharing some good info and perspective with attendees.
https://mobile.twitter.com/search/gallery?q=%23tnabc&idx=2&tid=556845360694321152

-- edit
Yoshi's personal preference is to heat a strawberry greenhouse in winter time or to warm up a swimming pool

Bowing side panel at Dr.Miner's photo as reported in some other post earlier.


I bought miners from DHgate + EMS and I get a lot of tracking info but they don't match situation with Customs office and mail service at my home country.
DHgate and EMS tracking have also different info.

Update

Freq 325

temp:56,55

two 2000rpm coolermaster fans for push pull cooling and two artic cooling 1350rpm one one the controller and one push air behind the miner

picture here:
http://pbrd.co/1ISn1ui

Seems winter is over in Sibiria :-p

That's how hot my blades are (at least right now). Seems to be OK for several days with 1.3 Th and 0.02% HWE at 400 frequency...

You can find in BM1384's datasheet that maximum operation temperature for this chip is 125℃, so 60-70℃ should not be such a problem...

Anyway, the lower temperature - the better...