Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 259. (Read 528055 times)

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found it here: https://fanbitcoin.com/index.php?topic=671189.7680

probably large enough for their customer service/engineer guy to post it here

Hmmmm

You're actually right about that.  It makes you wonder why they bother labeling it the wattage they rate it if there is risk of overloading a rail.

Thanks for further investigating, philip.

It may be too late.  He may have ordered the PSU already.

EDIT:

My Corsair AX860's have what is called "Active Power Factor Correction (PFC) with PF value of 0.99"  I've had two of them powering an S7 since Friday, October 16 and the cables are not even warm.  The PSU's are not hot either.  I'm not quite sure what Power Factor Correction implies.  I'm wondering if this means it has a means of distributing the the power appropriately where it needs to go without over heating?

Here is a link to the Corsair AX860 with specifications:  http://www.corsair.com/en-us/ax860-atx-power-supply-860-watt-80-plus-platinum-certified-fully-modular-psu

Again, I'm a big fan of buying used server PSU's like the IBM 2880W PSU's powered off 240V.  

Correct.
I had a Isobar 4/220 surge bar on hand and used it to do the test.

http://www.tripplite.com/surge-protector-isobar-4-outlets-1.8m-cord-330-joule~ISOBAR4220/

EDIT: I replaced the plug that came with the Isobar with a L6-30 plug.

Any email ? I need a S5 daughter board. (18 pins)

Thanks

I installed L6-30R receptacles for 2 of my 240V lines so regular 120V plug can't be used.

I wanted to post my recent experience with Bitmain.  After having a brand new unit's controller die within the first days of use, I contacted Bitmain and was less than pleased by their proposed solution (ship the entire unit to China and wait for a response).  Thankfully, I stumbled upon the Bitmain USA team and contacted them.  They went above and beyond to make sure I was satisfied with the resolution, and I am appreciative for their assistance.  I highly recommend dealing with their USA team out of Denver to make your life easier when dealing with Bitmain products or services.  Here's their number.  (844) 248-6246

When I set up my 240 volt dedicated line, I plugged a 120 volt fan into it just to check if power was there. Well, the fan worked.... on super speed. If I had a hair piece, I would have lost it. Needless to say, I unplugged it quickly.

That psu has six 30 amp rails.
You will need to be very lucky to get it to work.


If you do two cables to one rail five times you will be using 5/6 of the rails at a max of thirty amps each rail.

You will over load a rail if you put three cables on it.
So to load that psu correctly you will need to research how a rail feeds to the pcie jacks.

Good luck as it can be done correctly

I suspect if it is happening it is something hard to replicate.  I never could replicate on my S5, but some had the issue and was a pain for them.  On S5 I even without internet a few times never had a big issue.

On S7 it is kinda scary to hear people mention this problem.  I'm hoping it's a very small subset of machines.   

Have to get a pretty beefy fan controller those fans pull a lot of juice. High wattage per channel.

This hash board burning instance if the internet fails.

What is happening? Do the fans shut down when the internet is no longer sensed? If that is the case, it would not be hard to add a separate fan controller to keep the fans push/pulling air across the boards as a safety precaution while or if they ( Bitmain ) even bothers to provide a fix.

What was your clock out of the box on B2?

Sooooooo ...... What order date did they ship out today?

I ordered some S7 B3's  on 10/20/2015 .... I'll probably get some hobcobbled S7 B(whatever parts they could scrape up) and receive them a day or two before they announce the S8's ....... That would probably be about my luck, plus being the first time buying absolutely new Antminers, they are bound to fook over the little newbs

I have updated my S7 firmware. I used the 600 and I have been running 600. The main unit has run a week at a strong 4.85. I previously mentioned it was unusually steady on the average, but I wasn't and still not complaining, it is odd.
Anyway, I did not remove the checkmark to retain my settings. Once the firmware update completed everything looked good but my hash. It seemed pretty happy sitting around 200 ghs. I performed a cold boot, then a warm boot (as this has been my habit since I received my first S3) and everything came back up beautifully. After 10 minutes I'm sitting with 4901 on the average and  180 / .0025 on HW errors so we will let her ride for a while and check in later.

I wanted to throw my own 2 cents in here regarding the conversation to help determine cost. There are certainly many things to consider, and these guys have provided fantastic ways to help you learn to do such.

I use this as one of a few checklists when I am running through things. It helps me think of items I may not always consider. This portion in particular comes from another forum member, but I fail to remember his name and didn't catch it when I copied his list to my own sheet. I would say to use this section two ways.
1. As a specific list.
Yes you must use a calculator of some type to keep things efficient, accurate, and straightforward, and most of the time I use bitwisdom but I use theirs because it is convenient to other things of theirs I use regularly. Great site imo.
This provides you with real world items you may not think of, so use the list literally and determine if that line item applies to you.

2, Use the mindset to drive yourself in this train of thought. These items can be used to think of things which would only apply to you within your lifestyle or domicile.  Don't ignore that power bill. It can get ya. Think of what the other posters said the monthly cost for a single S7 is and be confident you want to go in. Use this list to contemplate items even experienced miners here may not consider. Also, it mentions taxes, and that is a huge decision in my opinion. I prefer not to discuss it myself, but you must consider it.

Overall, once you have the financials sorted, get your head back in the real reason you do this and figure out something fun you want to do with your fresh new S7 without voiding the warranty right away, and there is plenty to do without even touching her. Consider your mining environment. After all, that has the biggest impact along with your incoming power. What can you work on or tinker with whichever your stride which lights that fire and have fun.


So here after all this buildup is the list in its original incantation. It is not pretty, long, or at first glance all that informative, but think about where it is going and the things you may come up with that are outside the norm which may be factual items for many / most people.

"When we compare the price of mining devices, we believe we should take all these factors into consideration.

1.   Cash cost
a)   Mining device sales price. This is the most obvious cost.
b)   Shipping cost. Shipping cost is trick, different shipping service will have different shipping time, and it will influence the time cost discussed in 2. Time cost.
c)   Incremental investment on PSU
d)   Tax: Some miners will have to pay VAT or other import tax.

2.   Time cost: We can estimate the time cost based on the projected gross mining revenue during the waiting time.
a)   Time on waiting period of pre-order. You know, shipping in two weeks.
b)   Time on shipping. Some shipping methods is much slower than our UPS shipping service, and the shipping time lost usually much larger the shipping cost we can save from choosing the slower carrier.

3.   Unstable cost: the unexpected downtime will cost the mining revenue. Usually a family miner will have full time job and family members to take care of. Hosting service will let the experts do the job."
 

Good Luck

Everyone take care of the hash board failure potential.
I don't care if the guy had a low post count, he is probably right on, and I made sure I checked file integrity, I was sure I was on the bitmain site by going to my own saved link, not clicking his.
Even if you do not want to update firmware then until you do clip the wire which is the feedback from the fan to the control board. On the S5 it was the blue one, check yourself on the S7 so you know and you are confident.

Somehow, someway, people don't fry boards because of the internet dropping out. Of course I am depending on the Firmware to have corrected the issue which isn't the most failsafe and we have went through many iterations of firmware which did make things worse. However, I'm at 4821.34 with .0028 and things are still looking fine and I wouldn't have updated until I saw some people I trust do so and report positive experiences. I am not saying you should update your firmware, I am saying it has worked well for me so far, and other trusted members have said so far so good. ...But, do something about the internet-drop-hash-board-burn.

http://i59.tinypic.com/140vlu8.png

Can someone explain to me why are there 3 firmwares on BM site for S7:

600M 4.86TH/S
575M 4.66TH/S
550M 4.45TH/S

Can I use any of these firmwares on any batches of S7?

Example:
I have B2 unit can I put 600M firmware on it?
or I need to use 575M firmware?
what about 550M which batch is that one 

This calculator does an excellent job figuring it out for you.

Device name is not important:  I put "S7" anyway.


Enter in the number of watts with NO COMMA'S:  I put 1,210 as an example WITHOUT COMMA'S.  You would put 1210 watts WITHOUT COMMA'S if you are running only one S7 at stock settings.  If you had multiple S7's, multiply 1210 x the number of S7's you have.  Don't forget the watts of your box fan(s) and/or exhaust fan(s).  They burn wattage as well.  My peripherals, such as my 48 port TP-Link switch, router, modem, etc... uses a very small amount of power (watts).  So, I did not bother including peripherals.


Enter in the kilowatt hour cost:  My example was 0.034 [Which is 3.4 cents per kilowatt hour]


Enter in the number of hours each day the rig will run:  I put 24 hours a day in my example


Here is the link:  http://www.electricity-usage.com/Electricity-Usage-Calculator.aspx?Device=S7&Watts=1210&CostPerKWH=0.034&HoursPerDay=24

It's easy to figure out.  You know how many watts the S7 uses.  Multiply that by how many hours per day you will mine with it and divide by 1000, that is how many kilowatt hours/day you will use.  Multiply that by 30 and that's how many KWh you will use in a month.  Multiply that by your electricity rate and that's what it will cost you to run an S7 per month.  Omit the x30 step and that will give you per day cost.

For me to run one 24/7 for a month it would cost = 1.25KW * 24h * 30d * $0.30 = $270 a month.

My daily cost would be = 1.25KW * 24h * $0.30 = $9 a day.

That's also why I will never own one.

Not yet, I've left everything at factory settings except the pool information, the name of the rig and it's password.

I probably will get a couple of Corsair AX860's in another room plugged into 120 Volts and check it out to see if the fans stay at 90% after I disconnect the CAT6 cable from the controller.

EDIT:  I have a 50 feet ethernet cord to get the S7 connected to the switch from another room.  I need another room that is away from the other S7's to be quiet enough to listen.  I have not run any other CAT6 to jacks around the house.  I use wireless everywhere else.

I saw it.  I just never responded to it.  I'm going to find out if it fixed it one way or the other fairly soon if no one else does.