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Title: Connecting Three AntMiner S7's to one Controller Post by: Ondart on November 02, 2015, 06:09:20 AM 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 Title: Re: Connecting Three AntMiner S7's to one Controller Post by: RichBC on November 02, 2015, 07:17:08 AM 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 Title: Re: Connecting Three AntMiner S7's to one Controller Post by: Tupsu on November 02, 2015, 07:28:43 AM 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. Title: Re: Connecting Three AntMiner S7's to one Controller Post by: alh on November 02, 2015, 08:10:32 AM 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.
Title: Re: Connecting Three AntMiner S7's to one Controller Post by: Tupsu on November 02, 2015, 12:09:39 PM 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. Title: Re: Connecting Three AntMiner S7's to one Controller Post by: philipma1957 on November 02, 2015, 12:55:53 PM 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 Title: Re: Connecting Three AntMiner S7's to one Controller Post by: Ondart on November 06, 2015, 05:35:36 AM Thanks for all the advice. I'm going for one controller for two S7's; a spare controller is a good incentive. Title: Re: Connecting Three AntMiner S7's to one Controller Post by: mcbiv on November 09, 2015, 01:03:57 PM 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 Title: Re: Connecting Three AntMiner S7's to one Controller Post by: Tupsu on November 09, 2015, 01:48:24 PM 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 Title: Re: Connecting Three AntMiner S7's to one Controller Post by: Finksy on November 11, 2015, 08:40:16 PM 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.
Title: Re: Connecting Three AntMiner S7's to one Controller Post by: Tupsu on November 11, 2015, 09:06:25 PM 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 |
