[Guide] Dogie's Comprehensive Bitmain Antminer S7 Setup [HD] - page 11.

RichBC

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Quote from: VirosaGITS on October 03, 2015, 11:11:22 AM

Quote from: bradli on October 03, 2015, 11:01:52 AM

I received 1 s7 but not working properly.
With 600 frei it s not stable and do it 4550 with 0.11-0.14 error.
When I try more 600 hash droped.
550 frei 4400-4500
http://prntscr.com/8nagbn
Any idea ?
I used 2000w server psu

Well Bitmain is now selling the S7- or inferior portion of their S7 as Batch 2. You may be able to ask a partial refund for the difference because your miner does not meet the specs. Again its probably a single blade thats being suck. =/

So i'd say try 575hz since thats what the batch 2 come with at, stock.

Good point on the single blade. Will not fix the problem but would be instructive to boot up with just 2 boards connected at a time and see if there is one Hash board that is throwing the HW errors? Three reboots needed dropping a different board each time.

Rich

VirosaGITS

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Quote from: bradli on October 03, 2015, 11:01:52 AM

I received 1 s7 but not working properly.
With 600 frei it s not stable and do it 4550 with 0.11-0.14 error.
When I try more 600 hash droped.
550 frei 4400-4500
http://prntscr.com/8nagbn
Any idea ?
I used 2000w server psu

Well Bitmain is now selling the S7- or inferior portion of their S7 as Batch 2. You may be able to ask a partial refund for the difference because your miner does not meet the specs. Again its probably a single blade thats being suck. =/

So i'd say try 575hz since thats what the batch 2 come with at, stock.

bradli

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I received 1 s7 but not working properly.
With 600 frei it s not stable and do it 4550 with 0.11-0.14 error.
When I try more 600 hash droped.
550 frei 4400-4500
http://prntscr.com/8nagbn
Any idea ?
I used 2000w server psu

VirosaGITS

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Activity: 1302

Merit: 1068

Quote from: RichBC on October 01, 2015, 01:58:15 PM

Let's look at the number of connectors from a technical point of view. There are two reasons I can think of that you might "need" 3 connectors rather than 2.

First is the current rating of the contacts in the connector. In this case using a splitter will protect the Miner connectors however it will not protect the connector that is plugged into the splitter. So good from the Miner Warranty point of view but of no value from an overall reliability point of view.

Second is the volt drop through the cables and connectors, remember here the tight spec that Bitmain has put on the 12V supply of "12.0V+5%, should not be less than 12.0V" in which case the additional connector & wiring for the splitter is going to make things worse rather than better.

My advice would be to use a proper 3 way cable set-up.

Rich

The only thing i can add or contest in all of this is the voltage dropping when using split cables;

I'd add the Caveat that ultimately it depend on the quality of the PSU, and it's probably a good thing to have good connector to prevent arc and corrosion too.

What i mean is i mesured the volt on my evga G2 and its rock solid from 20 load to 105% load, with a single cable or a 6 + 6+2 cable. I believe the lowest i saw was 12.05v and highest i saw was 12.08v.

I still had connectors burn on the EVGA because the shitty Zeus GAQ rebrand's connectors were worthless.

RichBC

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Let's look at the number of connectors from a technical point of view. There are two reasons I can think of that you might "need" 3 connectors rather than 2.

First is the current rating of the contacts in the connector. In this case using a splitter will protect the Miner connectors however it will not protect the connector that is plugged into the splitter. So good from the Miner Warranty point of view but of no value from an overall reliability point of view.

Second is the volt drop through the cables and connectors, remember here the tight spec that Bitmain has put on the 12V supply of "12.0V+5%, should not be less than 12.0V" in which case the additional connector & wiring for the splitter is going to make things worse rather than better.

My advice would be to use a proper 3 way cable set-up.

Rich

ZymurBits

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How about just adding a couple of these splitters to the single PCI-e cables that come with the suggested EVGA power supply. Problem solved and they are less than $4.

http://www.amazon.com/JacobsParts-Express-Power-Splitter-Cable/dp/B00JLU0UQ4/ref=sr_1_3?ie=UTF8&qid=1443718016&sr=8-3&keywords=pcie+splitter

dogie

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Quote from: Finksy on October 01, 2015, 10:03:15 AM

Is it wise to advise others to go against something they have made explicitly clear against doing (for whatever reason)? No.

The reason they provided was that it "was string design and so needed 3", it didn't make sense. You are doing nothing wrong by using your unit correctly, where as overclocking is the specific activity of pushing a unit beyond its specifications. It seems like you have an ulterior motive here.

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Like I said, I agree with what's being stated 100%. With high quality cables (little larger than 16awg), I run 10x Neptune cubes each with single PCIe cables up to 280W, and they're hardly warmer than ambient.

Do I know how they would find out I was running 2 instead of 3 PCIe cables on an S7? Maybe not.

Is it wise to advise others to go against something they have made explicitly clear against doing (for whatever reason)? No.

Will I do it myself? Of course not Wink

The splitters that dogie linked to are the right way to go, for how much they cost they give you peace of mind in regards to warranty.

Edit: Here's a flashback

Quote from: dogie on February 04, 2015, 08:59:05 PM

Whenever you post your next resource, please make it exceptionally clear that overclocking will void a user's warranty.

VirosaGITS

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Quote from: Finksy on October 01, 2015, 09:32:48 AM

Quote from: dogie on October 01, 2015, 08:12:14 AM

Quote from: rockyforever on September 30, 2015, 11:06:09 PM

arent additional PCIE needed since that PSU comes with only 8?

8 should be fine on any reasonable PSU, I run with 7 with 16AWG and cables are good. There simply isn't a cost efficient PSU with 10+ so if you want more you'll have to pick up some 2x molex to PCI-E adapters.

For someone so adamant about giving others legal advice, I would say it's unwise to recommend anyone configure their $1800+ miners in a way that may void warranty with the manufacturer. Not that I disagree with you in the least on the matter...

How exactly could they ever know if you're running each board with 2 PCI-e instead of 3 PCI-e? 200Watts per socket is well into the safety margin, unless you're using cheap ass pci-e connectors, they will most likely work without even heating up.

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Quote from: dogie on October 01, 2015, 08:12:14 AM

Quote from: rockyforever on September 30, 2015, 11:06:09 PM

arent additional PCIE needed since that PSU comes with only 8?

8 should be fine on any reasonable PSU, I run with 7 with 16AWG and cables are good. There simply isn't a cost efficient PSU with 10+ so if you want more you'll have to pick up some 2x molex to PCI-E adapters.

For someone so adamant about giving others legal advice, I would say it's unwise to recommend anyone configure their $1800+ miners in a way that may void warranty with the manufacturer. Not that I disagree with you in the least on the matter...

dogie

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Quote from: rockyforever on September 30, 2015, 11:06:09 PM

arent additional PCIE needed since that PSU comes with only 8?

8 should be fine on any reasonable PSU, I run with 7 with 16AWG and cables are good. There simply isn't a cost efficient PSU with 10+ so if you want more you'll have to pick up some 2x molex to PCI-E adapters.

rockyforever

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arent additional PCIE needed since that PSU comes with only 8?

dogie

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Quote from: generalt on September 28, 2015, 08:13:04 PM

Quote from: Tupsu on September 27, 2015, 05:04:13 PM

Your photos are made from the older version of S7.

The new S7 is with different controller (all data cable connectors is in one way) .
Also, the housing is different from from the top. The older housing is from top smooth, like an your pictures.

So there are different versions of S7s among batch 1? That's kind of annoying.

Probably just mine was a batch 0, I got it 2-3 weeks before batch 1.

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Quote from: Tupsu on September 27, 2015, 05:04:13 PM

Your photos are made from the older version of S7.

The new S7 is with different controller (all data cable connectors is in one way) .
Also, the housing is different from from the top. The older housing is from top smooth, like an your pictures.

So there are different versions of S7s among batch 1? That's kind of annoying.

dogie

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Quote from: -droid- on September 28, 2015, 06:11:18 PM

Quote from: Tupsu on September 27, 2015, 05:04:13 PM

Your photos are made from the older version of S7.

The new S7 is with different controller (all data cable connectors is in one way) .
Also, the housing is different from from the top. The older housing is from top smooth, like an your pictures.

whats the big difference? is the new controller better?

The only indication I can find is that the cases have larger interlocking extrusions on the new one but the older boards seem stabler at higher clock speeds.

-droid-

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Quote from: Tupsu on September 27, 2015, 05:04:13 PM

Your photos are made from the older version of S7.

The new S7 is with different controller (all data cable connectors is in one way) .
Also, the housing is different from from the top. The older housing is from top smooth, like an your pictures.

whats the big difference? is the new controller better?

dogie

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Quote from: notlist3d on September 27, 2015, 10:20:15 PM

Great guide as always. Love your high rez pictures.

What camera do you use to take those? I always am amazed by your photo work.

Nikon D3200 with a 40mm prime + some macros when needed. Its getting a bit dated now, some of the new cameras are much better.

notlist3d

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Great guide as always. Love your high rez pictures.

What camera do you use to take those? I always am amazed by your photo work.

Tupsu

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Your photos are made from the older version of S7.

The new S7 is with different controller (all data cable connectors is in one way) .
Also, the housing is different from from the top. The older housing is from top smooth, like an your pictures.

Click to enlarge

Click to enlarge

"New" S5+ and "New" S7

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Quote from: VirosaGITS on September 27, 2015, 03:18:04 PM

Great guide Dogie..
I really like your comprehensive check list you made that depict which feature the miner has or not. I really hope you keep using that in all your review/guides from now on.

It will be.

Quote from: VirosaGITS on September 27, 2015, 03:18:04 PM

Anyhow, my biggest worry about getting an S7 is the noise. I'm surprised that beast only does 61dB at max fan. Is that actual reading with a sound meter or a reading taking from the manufacturer's fan taken in a sound proof room?

Actual reading with an expensive meter, in an otherwise 25dba background.

Quote from: VirosaGITS on September 27, 2015, 03:18:04 PM

The S5 is noisier and with double the TDP for the same formfactor-ish i can't imagine the S7 being any quieter.

The S5 just spams air all over the place and hopes a portion of it goes through the heatsinks. The S7 also has better heatsinks than the original S7s and is fully enclosed. If noise is an issue it has variable fan control if you can keep ambient temperatures down.

At 30% fan (2500rpm) the measurement only goes down to 59dba at 1m but it drops off much faster. Only an Avalon4 is quieter than it out of recent miners.

Topic: [Guide] Dogie's Comprehensive Bitmain Antminer S7 Setup [HD] - page 11. (Read 76346 times)