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Author Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH  (Read 527661 times)
fr4nkthetank
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November 10, 2015, 02:34:52 PM
Last edit: August 06, 2021, 06:06:47 PM by fr4nkthetank
 #3921

n
philipma1957
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November 10, 2015, 04:53:25 PM
 #3922

I have some batch 3, none have 24hr average over 4.86, most are in the 4.7 range and a couple are 4.60  24 hr average.

Troubleshooting I was thinking about starting to check input power level. 

Anything else?

while under full load check your dc input levels at all nine jacks on the blades.
all nine must all be under load while you test.
use a dmm meter
if they all read 11.95 volts  to 12.1 volts at every one

try a software boot.

if you still get bad numbers.  check your fan speeds and temps.

I have yet to see anyone show all nine blades slots under full load test at 11.94 or higher volts each one of them and have bad numbers.

every photo I have seen showing good volts did not show  that all nine jacks were plugged in and at  proper volts.

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Finksy
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November 10, 2015, 09:32:13 PM
 #3923

Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.

IBM 2880W PSU Packages: https://bitcointalk.org/index.php?topic=966135 IBM 4K PSU Breakout Boards & Packages: https://bitcointalk.org/index.php?topic=1308296 
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kaltar
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November 10, 2015, 09:32:57 PM
 #3924

Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.

Yup, i just bought mine Smiley

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November 10, 2015, 10:02:50 PM
 #3925

Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.

Yup, i just bought mine Smiley

I'm tempted, but I always jump a day too early...

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Tupsu
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November 10, 2015, 11:34:33 PM
 #3926

Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.

My last two S7
from  BATCH 5 × 2 = 3696.24 USD  with shipping

from  BATCH 6 × 2 = 2751.53 USD  with shipping

difference in price 944,71 USD        472 USD per miner
difference in hashrate   1620 GH/s  810 GH/s per miner


The higher  the  BTC price is , the higher is  the amount of USD on  invoice. Then more I have to pay 20% VAT.

  So I prefer to buy  from USD , if the  BTC  price is low and sell BTC, if the price is high.
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November 10, 2015, 11:55:31 PM
 #3927

Ok, I had possible short internet blackout or disturbance (was not at home).
came back to observe the following:

One batch 2 miner (9/15 system) fully recovered by itself.
Second batch 2 miner (10/23 system) did not recover, both fans were rotating, but not full tilt, air was coming out hot and miner was making a solid noise (not periodic, but continuous beeping); it was obviously not mining and did not recover the internet connection. I switched it off, let it sit for 5-10min with an external fan blowing air toward intake. Once air was coming out ~ambient, I switched the PSU back on and miner recovered internet and is hashing.

Conclusions:
in this batch 2 (updated to October system), fans were NOT rotating at high speed after internet loss and miner did not recover by itself upon internet restoration, but miner with 9/15 system did (the opposite of what you would be expecting).
The good news is that it did not burn itself either.
fullzero
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November 11, 2015, 12:17:51 AM
 #3928

Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.

Yup, i just bought mine Smiley

I'm tempted, but I always jump a day too early...

Very tempted.

At what USD/BTC Exchange rate will Bitmain change their pricing back to dollars?

Guesses?
opentoe
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November 11, 2015, 12:47:52 AM
 #3929

Mine was finally processed in California and is now heading to Toomim Bros in Washington.

I'm sending mine to Toomim Bros also so post your experiences when things get set up for you.  I placed my order on 9/6 so nothing for me yet.

How are you going to make your money back, you are getting charged for co-location fees, right?

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November 11, 2015, 12:59:17 AM
 #3930

Hi, does anybody knows how to stop beep sound when connection to net is down? I cannot find any controler of "beep sound" like S4 had. Thanks for any advice.
I don't think the S7's have a speaker to notify you when the internet connection goes down. I may be wrong but I though that's how they designed them.

I have two now .. both of them beeps like a hell Smiley ..so it does

You hear beeping over the jet blasters?

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November 11, 2015, 01:00:14 AM
 #3931

Hi, does anybody knows how to stop beep sound when connection to net is down? I cannot find any controler of "beep sound" like S4 had. Thanks for any advice.
I don't think the S7's have a speaker to notify you when the internet connection goes down. I may be wrong but I though that's how they designed them.

I have two now .. both of them beeps like a hell Smiley ..so it does

You hear beeping over the jet blasters?


That's a good question. Has anyone changed the fans out on their S7 to a quieter version?

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November 11, 2015, 01:00:56 AM
Last edit: November 11, 2015, 02:36:14 AM by Biodom
 #3932

Ahh, poor Bitmain.  They fix their B1-5 to USD and the price skyrockets.  They fix their B6 to BTC and the price drops out.  It's a good time to be a buyer folks.

Yup, i just bought mine Smiley

I'm tempted, but I always jump a day too early...

Very tempted.

At what USD/BTC Exchange rate will Bitmain change their pricing back to dollars?

Guesses?

I got one-confirmed within seconds (cost with shipping $1392)
Q #2-at $300 or maybe midday in Shanghai, whichever comes first.
Edit: losing ~$90-98 already, oh well, usually you cannot hit the best price.
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November 11, 2015, 01:13:33 AM
 #3933

^you can get away with a bit more than 80% load, but i would absolutely not exceed 90%. for the risks it creates, you may as well just install another breaker+wire run, instead of risking a failure in your wiring.


That's the way I am leaning right now since if a fire did start it wouldn't be to code and insurance would have a valid argument. I guess I will simply use the wire for the 240v run for the unused AC during the winter, seems better than gambling with fire and code violations.

Thanks for the banter, it helped convince me not to overload the PDU's marginally. Smiley


Ufo

Wait, you don't have a fire suppression system with that setup? When there's that much invested you want to protect it. If you've never experienced a fire you'd think real hard about making some changes. And I'm not talking about a little stove fire from burnt butter. I'm talking about burn the house down fire.

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dogie
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November 11, 2015, 01:38:15 AM
 #3934

I have two now .. both of them beeps like a hell Smiley ..so it does

You hear beeping over the jet blasters?
You can hear them a block away, pretty powerful little things.


That's a good question. Has anyone changed the fans out on their S7 to a quieter version?
It seems like most people just set a manual fan speed, which at about 30-35% allows you to make it an S3'esque level.

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November 11, 2015, 01:41:28 AM
 #3935

Ok, I had possible short internet blackout or disturbance (was not at home).
came back to observe the following:

One batch 2 miner (9/15 system) fully recovered by itself.
Second batch 2 miner (10/23 system) did not recover, both fans were rotating, but not full tilt, air was coming out hot and miner was making a solid noise (not periodic, but continuous beeping); it was obviously not mining and did not recover the internet connection. I switched it off, let it sit for 5-10min with an external fan blowing air toward intake. Once air was coming out ~ambient, I switched the PSU back on and miner recovered internet and is hashing.

Conclusions:
in this batch 2 (updated to October system), fans were NOT rotating at high speed after internet loss and miner did not recover by itself upon internet restoration, but miner with 9/15 system did (the opposite of what you would be expecting).
The good news is that it did not burn itself either.

This was an issue with the S5's. I first reported it back in the S5 thread several months ago. I'll never be able to find the thread. I came very close to burning up all my S5's so I chose to hook up all my fans directly to the PSU and not rely on the controller. Simple molex 3/4 pin board. User "thedreamer" prompt the idea a while back. Never had heat issues or any issues since then.

EDIT: Wasn't aware the S7's had a manual fan control. I never upgraded my S5 firmware that I believe does have that control. Don't remember, but since my S5 firmware is so stable and consistent I did not want to upgrade. Just moved fans to constant power.

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November 11, 2015, 02:14:04 AM
 #3936

Mine was finally processed in California and is now heading to Toomim Bros in Washington.

I'm sending mine to Toomim Bros also so post your experiences when things get set up for you.  I placed my order on 9/6 so nothing for me yet.

How are you going to make your money back, you are getting charged for co-location fees, right?


The hosting fees charged by Toomim works out to $0.11/kWh power costs which is cheaper than the electrical cost at my house.  I am averaging $28.00 per day after I deduct the average daily fee for my 4 S7s.  After selling all of my S5s (which had been running for 3 months after reaching ROI) and adding ~$2000 in to get these 4 machines, I will be back to even cost in about 80 days from the day they were delivered which was 12 days ago or in about 68 days from now.  I'd say I'm well on my way to getting my money back in the accounting sense...my speadsheet turns from red back to black on or about January 15, 2016.

Best of all, I'm not spending a penny on upgrading my electrical service, on any sound proofing measures, or on any additional cooling measures.
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November 11, 2015, 02:46:36 AM
Last edit: November 11, 2015, 03:17:39 AM by Biodom
 #3937

Ok, I had possible short internet blackout or disturbance (was not at home).
came back to observe the following:

One batch 2 miner (9/15 system) fully recovered by itself.
Second batch 2 miner (10/23 system) did not recover, both fans were rotating, but not full tilt, air was coming out hot and miner was making a solid noise (not periodic, but continuous beeping); it was obviously not mining and did not recover the internet connection. I switched it off, let it sit for 5-10min with an external fan blowing air toward intake. Once air was coming out ~ambient, I switched the PSU back on and miner recovered internet and is hashing.

Conclusions:
in this batch 2 (updated to October system), fans were NOT rotating at high speed after internet loss and miner did not recover by itself upon internet restoration, but miner with 9/15 system did (the opposite of what you would be expecting).
The good news is that it did not burn itself either.

This was an issue with the S5's. I first reported it back in the S5 thread several months ago. I'll never be able to find the thread. I came very close to burning up all my S5's so I chose to hook up all my fans directly to the PSU and not rely on the controller. Simple molex 3/4 pin board. User "thedreamer" prompt the idea a while back. Never had heat issues or any issues since then.

EDIT: Wasn't aware the S7's had a manual fan control. I never upgraded my S5 firmware that I believe does have that control. Don't remember, but since my S5 firmware is so stable and consistent I did not want to upgrade. Just moved fans to constant power.


yeah, i remember your posts, it was good insight.

The point i was trying to make was that bitmain warranty was suggesting to update to 10/23 system that should have addressed the issue.
My surprise was that it did not (at least fully), although miner did not burn.
surprisingly, batch 2 miner with older system did not have any problems.
My guess, each and every case is different, which makes it challenging to generalize.
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November 11, 2015, 05:57:52 AM
 #3938

Do people actually manage to get their order in for only 4 BTC. Its crazy cheap right now.
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November 11, 2015, 08:10:43 AM
 #3939

Do people actually manage to get their order in for only 4 BTC. Its crazy cheap right now.

Truf...Crazy cheap... Sad ordered many of them a few days ago.
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November 11, 2015, 08:15:07 AM
Last edit: November 11, 2015, 08:26:51 AM by dmwardjr
 #3940

Hi everyone,

I'm well up on identifying and locating electrical troubles on low voltage and high voltage circuits.  However, I'm not up on networking in data centers.  So, I have a question for those of you with experience in data centers about PDU's.

I have my eyeballs on getting Tripp Lite PDU's that are "switched."  I want the ability to monitor and manage what is plugged into them while I'm away at times.  I'll use Team Viewer to log into my rigs and PDU's.  Sometimes, there is a need to turn off the power to a rig that is non-responsive in my browser.  I just had that issue this evening and had to power it down and back up again to access it in my browser.  My question is the following about a particular model PDU I'm wanting to stock up on.

The specifications on this 30 Amp PDU states the following:  "(agency de-rated to 24 amps)."  Does this mean I (the agency) have the option to "de-rate to 24 amps" or does it mean it's limited to 80% (24 Amps) regardless?

Here is a link to the PDU:  http://www.tripplite.com/switched-pdu-30a-208v-240v-0u-vertical-c13-c19-outlets-nema-l6-30p-single-phase~PDUMV30HVNET/

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