ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH

[Biodom]

My B4 at 575-1156W at the wall with EVGA1300 G2 gold (0.2513 J/Gh), 4600Gh 3960/3840rpm, 77F (25C) ambient
MY B5 at 625-1289W (0.2577 J/Gh) at the wall with EVGA1300 G2 Gold, 5001Gh, 4200/3960rpm, 77F
B5 was 1250, not 1210W at 600 with fan at 4400/4080

I mention fan speed because it affects W at the wall, naturally.

Was not with 220V and 40% Fan

no, 110/120V and auto fan for both. Did they specify 40% fan for 0.25? I tried lowering fan on B1 and B2, but results were that they somehow overheated even when sensor was reading OK temp, and as a result had some software glitches, so I stopped lowering fan below 65. In any case, I do auto for a few days to let them "settle in".
the difference from expected  J/Gh is quite small and so far, I am quite happy.

[1715246427]

1715246427

[supertee]

Batch 8 ist mir nicht sympathisch... also halt bis nächstes Jahr warten, was scheisse ist..

why not, looks okay to me. 

sorry, don't know why I wrote German^^

Because it's less hashpower and more power consumption previous batches. I would like something like batch 5, kinda like that one.

[fr4nkthetank]

Batch 8 ist mir nicht sympathisch... also halt bis nächstes Jahr warten, was scheisse ist..

why not, looks okay to me. 

sorry, don't know why I wrote German^^

Because it's less hashpower and more power consumption previous batches. I would like something like batch 5, kinda like that one.

hahahha i had to google translate that.  i understand people say its an overpriced already overclocked model, but people with batch 1-5, how high can you overclock it without too much hw ?    im only going to try that after 90 days though for warranty purposes

[jjiimm_64]

Batch 8 ist mir nicht sympathisch... also halt bis nächstes Jahr warten, was scheisse ist..

why not, looks okay to me. 

sorry, don't know why I wrote German^^

Because it's less hashpower and more power consumption previous batches. I would like something like batch 5, kinda like that one.

hahahha i had to google translate that.  i understand people say its an overpriced already overclocked model, but people with batch 1-5, how high can you overclock it without too much hw ?    im only going to try that after 90 days though for warranty purposes

not only HW errors, but about an extra 100w for a few hundred GH....  in my experience it is almost ALWAYS better to underclock then overclock

[Biodom]

Batch 8 ist mir nicht sympathisch... also halt bis nächstes Jahr warten, was scheisse ist..

why not, looks okay to me.  

sorry, don't know why I wrote German^^

Because it's less hashpower and more power consumption previous batches. I would like something like batch 5, kinda like that one.

hahahha i had to google translate that.  i understand people say its an overpriced already overclocked model, but people with batch 1-5, how high can you overclock it without too much hw ?    im only going to try that after 90 days though for warranty purposes

not only HW errors, but about an extra 100w for a few hundred GH....  in my experience it is almost ALWAYS better to underclock then overclock

it was the case with SP20/SP30/S1, but not really the case of S7. It stays pretty much close to 0.25J/Gh, in overclock and underclock.
The little difference is probably all due to fans. As far as HW errors are concerned, B5 went from 0.0000 (13 errors in two days) at 600 to 0.0030% at 625, which is fine.

[Exoskeleton]

it was the case with SP20/SP30/S1, but not really the case of S7. It stays pretty much close to 0.25J/Gh, in overclock and underclock.
The little difference is probably all due to fans. As far as HW errors are concerned, B5 went from 0.0000 (13 errors in two days) at 600 to 0.0030% at 625, which is fine.

I tried the 625 setting on one of my S7s and I got great results too. I'm going to wait till the 90 warranty is up before I turn the other few up though, just in case I run into any problems with them in the next few months.

[Cyper_BLC]

Very interesting and not what I had expected. They have got rid of the bottom 9 chips in the chain, as opposed to 9 out of the middle I had predicted. What I do not understand is what and why that additional component (Large Inductor?) and the additional capacitors are for? Unless perhaps there is a buck converter chip on the other side of the board & we have moved away from the string design? Need a Sidehack opinion here?   Or perhaps it's a hybrid with a buck converter to a slightly lower, Adjustable?   voltage & then still a string for the chips?

Also a picture of the other side of the board would be great?


Rich

In some cases, inductors are installed to offset the affects of capacitance.  Especially, when high frequencies are involved.  Those round components near the inductor looks like capacitors.  It has me curious as well.

this modification is necessary, because bitmain chip voltage and data voltages are different, Serial chip feeding becomes need more stable voltage.
when chip goes down to under 0,61 Volt then chip fried. (under 11V) if overclock your miner you must to have a lot of amperes, otherwise your voltages goes down immidiately. i add 2200uF/16V capacitor each hashboard. This capacitors filter SMPS's peak and 500Khz 12V charge time. we are talk about more than 100A. This hungry machine suck 12V quicly. and ferrit inductor job is choke inductor too. this method is more stable for silly PSU's.

[dog1965]

What Do you Guys think about the number of HW errors Is it good or bad Personally I don't like it but if they are good what the hell at this point ?

 

[AriesIV10]

What Do you Guys think about the number of HW errors Is it good or bad Personally I don't like it but if they are good what the hell at this point ?

 

I have 8 of them running HW between 0.0100% and 0.0200%.  I would consider trading for yours if you would like?  haha  Yours is running just fine.

[dog1965]

Thanks for the help all is appreciated the voltage is 11.85v loaded. I am using two EVGA SUPERNOVA 1300 G2's on one S7 I hate it because I can adjust the voltage on them. My S7 is from batch 5.

[elokk]

Has anyone else here ordered an S7 from Bitmain via a DOMESTIC wire transfer? I called 844-248-6246 and have been getting the run around for wire instructions  for many days now even though I have an open ticket with them. I was under the impression Bitmain was in business to sell their products

[notlist3d]

Has anyone else here ordered an S7 from Bitmain via a DOMESTIC wire transfer? I called 844-248-6246 and have been getting the run around for wire instructions  for many days now even though I have an open ticket with them. I was under the impression Bitmain was in business to sell their products

There is support in us.... but the ordering likely will be though China.  If you ordered a ton I suppose they might make a exception.

Have you tried the from contact page emailing - https://www.bitmaintech.com/about.htm:


Contact Us 

Anyting related with this site and your order, such as invalid order or payment does not show up: webmaster@bitmaintech.com

Business plans/proposals, customer service and RMA request: info@bitmaintech.com


I would try a email to both and see what results are if you have not already.

[RichBC]

I am having trouble with understanding what you are saying here?

this modification is necessary, because bitmain chip voltage and data voltages are different, Serial chip feeding becomes need more stable voltage.

What do you mean by "bitmain chip voltage and data voltages are different,"?

when chip goes down to under 0,61 Volt then chip fried. (under 11V) if overclock your miner you must to have a lot of amperes, otherwise your voltages goes down immidiately. i add 2200uF/16V capacitor each hashboard.

Agreed that if the chip  voltage goes under 0.61V / 11V Supply there could be a problem, however this is a 135 chip system which at 12V gives 0.8V / chip and at 11V it's stiil 0.73V on the chips?

This capacitors filter SMPS's peak and 500Khz 12V charge time. we are talk about more than 100A. This hungry machine suck 12V quicly. and ferrit inductor job is choke inductor too. this method is more stable for silly PSU's.

Are you suggesting that the Capacitors & Inductor in the picture are the only additions to that part of the circuitry and that there is no Buck Converter chip on the other side of the board as I am guessing?


Rich

[dog1965]

I am having trouble with understanding what you are saying here?

this modification is necessary, because bitmain chip voltage and data voltages are different, Serial chip feeding becomes need more stable voltage.

What do you mean by "bitmain chip voltage and data voltages are different,"?

when chip goes down to under 0,61 Volt then chip fried. (under 11V) if overclock your miner you must to have a lot of amperes, otherwise your voltages goes down immidiately. i add 2200uF/16V capacitor each hashboard.

Agreed that if the chip  voltage goes under 0.61V / 11V Supply there could be a problem, however this is a 135 chip system which at 12V gives 0.8V / chip and at 11V it's stiil 0.73V on the chips?

This capacitors filter SMPS's peak and 500Khz 12V charge time. we are talk about more than 100A. This hungry machine suck 12V quicly. and ferrit inductor job is choke inductor too. this method is more stable for silly PSU's.

Are you suggesting that the Capacitors & Inductor in the picture are the only additions to that part of the circuitry and that there is no Buck Converter chip on the other side of the board as I am guessing?


Rich

That's what I am thinking to. I also heard there is no buck converter on a few of the batches that's why you so called have to use 12v+ whatever.

[RichBC]

That's what I am thinking to. I also heard there is no buck converter on a few of the batches that's why you so called have to use 12v+ whatever.

The 162 chip systems are definitely a straight string design without a Buck Converter. The 135 Chip systems could still be a string design but on paper the Core Voltage at 0.8V is too high, so when the picture of the 135 chip hash Board appeared I assumed that they had added a Buck Converter but with that still feeding the shortened string?

If so then big unanswered question is can it be adjusted or even better have they made it programmable? What we need is a picture of the other side of the board.


Rich

[FlensGold]

Getting first shipping confirmation from Batch 6..expected arrival in 2 days :-)

[mikefallen]

batch 6 shipped last night - supposed to  arrive friday but my batch 5 are still stuck in customs

[ryanjf]

batch 6 shipped last night - supposed to  arrive friday but my batch 5 are still stuck in customs

My batch 5 was stuck in customs as well because Bitmain overstated the value at over $7000 per miner. I just had to call FedEx and email them a screen shot of my order and state that the value was overstated due to human error. They'll also want to know what the miner does. This explanation got it released right away,"This particular item is a collection of computer processors called ASICs that perform a specific computational task. Alone, this component does nothing. Once I assemble other pieces and attach the ASICs it solves complex computer math problems. In the most simplest of terms, it is just a computer component."

Hope this helps.

[thesmokingman]

Hopefully batch 7 isn't to far behind since batch 6 and 7 have the same approx ship dates.

[Cyper_BLC]

I am having trouble with understanding what you are saying here?

this modification is necessary, because bitmain chip voltage and data voltages are different, Serial chip feeding becomes need more stable voltage.

What do you mean by "bitmain chip voltage and data voltages are different,"?

when chip goes down to under 0,61 Volt then chip fried. (under 11V) if overclock your miner you must to have a lot of amperes, otherwise your voltages goes down immidiately. i add 2200uF/16V capacitor each hashboard.

Agreed that if the chip  voltage goes under 0.61V / 11V Supply there could be a problem, however this is a 135 chip system which at 12V gives 0.8V / chip and at 11V it's stiil 0.73V on the chips?

This capacitors filter SMPS's peak and 500Khz 12V charge time. we are talk about more than 100A. This hungry machine suck 12V quicly. and ferrit inductor job is choke inductor too. this method is more stable for silly PSU's.

Are you suggesting that the Capacitors & Inductor in the picture are the only additions to that part of the circuitry and that there is no Buck Converter chip on the other side of the board as I am guessing?


Rich

- Yes there are absolutly different with data signals taking from schimitt triggered hex buffers.
Look at bm1385 PDF.


-i dont know which chips series or parallel on this new 135 chip board. 15 series possible. if feed 12 optimum 0.8V, if feed 10 min 0.66V.
but we know this is overclocked model, finally you cannot feed 10V for 700Mhz.

-i dont know but i dont think so, this is not step up or down buck converter because this coil needs large mosfets and controller, i dont see them yet