Author

Topic: S9 lowest rpm & temps (Read 972 times)

donator
Activity: 792
Merit: 510
May 20, 2017, 01:22:16 AM
#4
You have a nice setup and stats looks good.

100W saving...  since you are using the 93% efficiency PSU, not much saving you can reach.  Fan running lower RPM since the average PCB temperature is lower, so that is a plus.


Hello again,

Its been 2 weeks now since I have been monitoring 24/7 my S9 antminer 12.5TH/S working and noted down the figures.

I use the bitmain`s latest APW3+-12-1600W PSU

They are both brand new. No bad chip issues.

I have placed my miner in a server rack cabinet 2 meters tall.

I have open the rack`s side(left-right) doors and it is in a controlled temperature small room around 4sq meters.

The room temperature varies from 19 Celsius to 21 with the help of an inverter wall air condition.

The humidity varies from 34% to 40%.

There are no windows in order to let fresh air in. only a closed entry door.

The 3 hashboards have all day the bellow temperatures:

BOARD1 81-83
BOARD2 75-77
BOARD3 73-75

The fans  rpm are:

FRONT fan from 2160min to 2520max(note that the front fan sucks really cold air from the air condition as they are 1-1,5 meter face to each other)
BACK fan from 2880min to 3120max(it exposes relatively medium warm air. I have monitored really warmer air figures with the back fan at 4320 rpm when I  used different positioning/setups of the equipment)

The watt consumption is steady 1313Watt / hour

and the 24hour hashrate(from the miner status page) is 12,644GH/S(avg).

I would like to ask from your experience if these figures are OK for my mine`s long life or if I am doing something REALLY wrong.

Bare in mind that I don`t want to "overclock-underclock" or change settings of the miner. I want to let work in AUTO with its own settings(I think my miner has by default auto settings for FANS, Frequencies etc as i saw in it`s menu).
  
Is there a way to decrease the watt consumption lets say 100watts/hour and still have the same average hashrate???

Sorry for the long post and for my English as they are not my native language but I will really need some feedback on this.

Thank you in advance miners
member
Activity: 85
Merit: 11
May 19, 2017, 03:34:29 AM
#3
Hello again,

Its been 2 weeks now since I have been monitoring 24/7 my S9 antminer 12.5TH/S working and noted down the figures.

I use the bitmain`s latest APW3+-12-1600W PSU

They are both brand new. No bad chip issues.

I have placed my miner in a server rack cabinet 2 meters tall.

I have open the rack`s side(left-right) doors and it is in a controlled temperature small room around 4sq meters.

The room temperature varies from 19 Celsius to 21 with the help of an inverter wall air condition.

The humidity varies from 34% to 40%.

There are no windows in order to let fresh air in. only a closed entry door.

The 3 hashboards have all day the bellow temperatures:

BOARD1 81-83
BOARD2 75-77
BOARD3 73-75

The fans  rpm are:

FRONT fan from 2160min to 2520max(note that the front fan sucks really cold air from the air condition as they are 1-1,5 meter face to each other)
BACK fan from 2880min to 3120max(it exposes relatively medium warm air. I have monitored really warmer air figures with the back fan at 4320 rpm when I  used different positioning/setups of the equipment)

The watt consumption is steady 1313Watt / hour

and the 24hour hashrate(from the miner status page) is 12,644GH/S(avg).

I would like to ask from your experience if these figures are OK for my mine`s long life or if I am doing something REALLY wrong.

Bare in mind that I don`t want to "overclock-underclock" or change settings of the miner. I want to let work in AUTO with its own settings(I think my miner has by default auto settings for FANS, Frequencies etc as i saw in it`s menu).
  
Is there a way to decrease the watt consumption lets say 100watts/hour and still have the same average hashrate???

Sorry for the long post and for my English as they are not my native language but I will really need some feedback on this.

Thank you in advance miners
hero member
Activity: 2534
Merit: 623
May 06, 2017, 04:49:50 AM
#2
I had mine underclocked getting about 4ths and fans set to 15% which gave about 65c with an ambient temp of 20c
member
Activity: 85
Merit: 11
May 06, 2017, 02:17:17 AM
#1
Hi everyone,

can plz tell me whats the lowest rpms and temperatures you have ever seen in your S9 antminer?

I am trying different conditions at the moment and monitoring rpms and temps in order to find an optimum scenario.

I believe this will may have an affect in my miner`s long life.

Thanks for your time

 
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