Bitcoin Forum

Hi,

I 'm trying to make the antminer S7 quiter.
I have put 2 BitFenix Spectre Pro PWM 140mm fans on the miner. (push / pull)

The temperature remains below 60 at lower frequency.
But the device stops working!!!

What is going wrong???

regards,
eric

not enough rpm for the bitmain software!?!?

did you use an 140 to 120 adapter?

Yes! I used a 140 to 120mm adapter.
Can I disable the rpm setting?

gr,
eric

I used the same fan before with an S2 as the exhaust fan and it ran OK but I wouldn't use them for an S7. It will overheat.

The fan only spins at like 1800rpm.

Yes i know!
But I have put the frequency at 400 MHz. (temp lower then 62°C)

gr,
eric

Can I make a change in  the software? lower the lowest rpm speed?

regards,
eric

Power the fans directly from the PSU.

Put the stock fans back set freq to 500 . Then set stock fans to 30%.

Return those fans you purchased.

Buy this from Home Depot
Flex duct 12 inch .

It is twenty five foot long

Set the unit into the flex duct about a foot in .

use a bitmaintech psu as it will fit in the duct.

This will be quiet and not restrict air flow plus the exit end is long use to guide the air out of the home.

Thats also a possibility. I have almost the same setup in my basement!

But I also have some S5 miners in a regular pc tower case and they work fine.
They are at the office and during office hours they automatically mine at a lower frequentie (low noice) and in the weekends and non working moments, they mine at 100%.
The stock fans are just to loud to do this. Thats why I looked for high CFM fans.
The S5 mines during the day at 300MHz and during night at 350MHz.

Can it work for the S7 but with lower frequenties?
Can I switch off the low rpm control in the software?

regards,
Eric

You can set fan to a certain percentage.  Can it work at the percentage you pick? That would depend on the tempature of miner and what percentage you pick. 

But phil is right return those fan's they are not something for a S7.

There was someone here who used S3 fans on the S7 and downclocked it to like 3TH/s

Ship it to our datacenter BitClouder here the miner can make any noise he want :)

Try immersed cooling.

Ok, thanks for your wonderful solution given the fact that most of us don't have access to that kind of equipment.

It is kinda a unrealistic idea for most.   Have we even seen a S7 using immersion cooling?  I don't think I've seen it but I could be wrong.     Most will end up doing some sort of box to dampen sound.  And it won't get rid of all of it but can make it quieter.

Well, should I open a topic, specific for cooling?Would it help any others?

what would be the best cooling technique?

It all depends on where you live and what your mining area is like.  If you have a mining area just for miners you can focus on cooling easier then say someone with them in different rooms.

But cheapest I believe is evaporation cooling I believe is the cheapest (been a while since I have priced running it), but it does not work in all environments.  I myself use lot's of CFM's and a good exhust for my mining area.  Chances are using CFM's will be one of the most common.

And  BTC_ISTANBUL I just have not seen a S7 using immersion.  If you are able to show one and cost I would love to see it.

Hi all, couple of questions regarding my S7. It is showing a temp of 62, the current frequency is at 700mm.

1)Does lowering the frequency to about 625-650 cool it down?

2)Does it also make it quieter? what are you suggestions for the fan %?

3) I want my S7 to be a little quieter and at the same time less than 62 temp, will lowering the frequency affect my hashing?

The S7 is a great machine but it is not made to be a quiet machine.   Some have made custom boxes to dampen sound.   Lowering freq WILL effect your hashing speed.  You can try it but I think it is still going to have some noise.

They are not the kinda miner you really put in family room, etc.   If you don't have an area sound is not a issue at likely search on forum and see some of the things people have done to dampen sound.  It does not get ride of it all but it can dampen it.  Just make sure not to hurt airflow when doing it and watch temps.

I would like to share many photos for my cooling setup.However, I just do not know how to insert a photo.If anyone help me for this issue I would be happy to share photos of my set up for immersed cooling, peltier cooling, water cooling and fan cooling.Yes I own all of them:)

Put the picture on a hosting site such as photobucket. Then once it's on copy the image URL and paste it into your post. Then it will show up ;)