Connecting Three AntMiner S7's to one Controller

[Ondart]

I saw some images of the S5+ and the S7 where three units, side by side, are connected to a single controller on the middle miner. Is there any benefit to doing this vs just running each on its' own controller individually? I am curious, is anyone doing this?

-Ondart

[RichBC]

There are several benefits.

Reduction in the power consumption = better overall efficiency.
Reduction in the management overhead.
Makes available spare controller boards, either to sell or as spares if you get a failure.

Quite separately I think the Jury is still out on if the S7 Controller board supports 3 Miners / 9 Hash Boards.

There are other threads with discussion on this.

https://bitcointalk.org/index.php?topic=1173573.0


Rich

[Tupsu]

You can connect  only two S7 with one controller.

S5+ is coming  already at  the factory 3 cubes with  ohne controller. S5+ software is broken, fan control is not working.

[alh]

I think that the original Batch #1 S7 firmware did support 9 boards, but the latest firmware limited it to 6 boards.. That may be faulty recollection on my part. Obviously there were, or still are, plans to support 9 boards, or there wouldn't be 9 hashing board connectors.

[Tupsu]

I think that the original Batch #1 S7 firmware did support 9 boards, but the latest firmware limited it to 6 boards.. That may be faulty recollection on my part. Obviously there were, or still are, plans to support 9 boards, or there wouldn't be 9 hashing board connectors.

Connectors are all working, but from Bitmain site downloaded S7 software not support it.
It works with same S7 controller and S5+ software with 3x S5+ cubes. So all 9 data ports are fine.

[philipma1957]

I can only confirm 2 s-7's as I never had three on hand to test.

here are my two  one batch 1 with untouched firmware running both the batch 1 and  batch 2.

It got hot in NJ it will be 70f today so my two are downclocked to manage heat

At 50f I can run my two at freq 581 and get around 9300
at 45f I can run my two at freq 587 and get around 9400

at 70f I run at freq 562 and get 9080

some math  562/600 = 93.666667%   x 4860 = 4552  x 2 =  9104   and I am doing 9080  due to 0.0052% errors so no complaints

[Ondart]

Thanks for all the advice. I'm going for one controller for two S7's; a spare controller is a good incentive.

[mcbiv]

philipma1957,

 Which data ports are your hash boards plugged into? can you take a pic?
I am having issues plugging 6 boards into one S7 Controller where some ports don't seem to
recognize the S7 boards correctly and don't hash.  I am seeing this on batch 1 and batch 3.
Does anyone else who has tried plugging multiple S7 systems into on controller seen this issue?

 

http://s29.postimg.org/tos1dj9t3/s7x2sadface.jpg 

I can only confirm 2 s-7's as I never had three on hand to test.

here are my two  one batch 1 with untouched firmware running both the batch 1 and  batch 2.

It got hot in NJ it will be 70f today so my two are downclocked to manage heat

At 50f I can run my two at freq 581 and get around 9300
at 45f I can run my two at freq 587 and get around 9400

at 70f I run at freq 562 and get 9080

some math  562/600 = 93.666667%   x 4860 = 4552  x 2 =  9104   and I am doing 9080  due to 0.0052% errors so no complaints

https://i.imgur.com/9pfjjyb.png

[Tupsu]

philipma1957,

 Which data ports are your hash boards plugged into? can you take a pic?
I am having issues plugging 6 boards into one S7 Controller where some ports don't seem to
recognize the S7 boards correctly and don't hash.  I am seeing this on batch 1 and batch 3.
Does anyone else who has tried plugging multiple S7 systems into on controller seen this issue?

 

https://bitcointalk.org/index.php?topic=1173573.20

[Finksy]

As a side note, everyone is recommending this to save power by limiting controllers.  However, you still need to power the fans for each miner (which draw from the controller board and contribute to its power consumption), and each fan draws ~24W.  BBB boards only consume 2-3W max, so the amount of power savings is really negligible.

[Tupsu]

As a side note, everyone is recommending this to save power by limiting controllers.  However, you still need to power the fans for each miner (which draw from the controller board and contribute to its power consumption), and each fan draws ~24W.  BBB boards only consume 2-3W max, so the amount of power savings is really negligible.

I use this possibility for a simpler overview.
If I have purchased total of 32 antminer S7, then it only makes 16 controllers.

Now I have a double S7 only 7 pieces , because I put together only the best miners with very low HV error rate.
Five of them are at my house
After three hours in antpool
9,711.79
9,673.46
9,729.75
9,699.34
9,717.76