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

[RichBC]

it would increase the aftermarket value of B1-7.

One positive way of looking at it I suppose.

Always hate it when manufacturers start saving a few cents in this way. I am assuming it's been driven by the Bean Counters rather than a deliberate attempt to stop people plugging up multiple S7 to a single controller?

Or could mean there is an S7+ on the way?

Rich

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[fr4nkthetank]

it would increase the aftermarket value of B1-7.

One positive way of looking at it I suppose.

Always hate it when manufacturers start saving a few cents in this way. I am assuming it's been driven by the Bean Counters rather than a deliberate attempt to stop people plugging up multiple S7 to a single controller?

Or could mean there is an S7+ on the way?

Rich

Yeah i'm guessing an s7+ is coming end of january/feb, will probably be a monster at 4000w, and you will need 30 pcie cables

[Biodom]

it would increase the aftermarket value of B1-7.

One positive way of looking at it I suppose.

Always hate it when manufacturers start saving a few cents in this way. I am assuming it's been driven by the Bean Counters rather than a deliberate attempt to stop people plugging up multiple S7 to a single controller?

Or could mean there is an S7+ on the way?

Rich

personally, i don't care anymore...it is not the time to spend BTC, but the time to harvest 'em.

[lanfeusst]

Interesting re B1 S7.
It suddenly went from 4.79 Th to 3.65 Th for few hours (before I noticed) without any zeroes or temperature extremes.
Soft reboot fixed the problem.
two possibilities: some chips dropped out, but somehow boards did not show it or miner "got tired' and "decided" to take it easy  
This is one of the earliest B1 machines ever delivered (on day two of B1 delivery-9/24 or so)-hashing close to 3 months already, so it would be interesting if someone else observed the same.

Happened to me once for a B1 delivered early too. Hashrate dropped to 2/3 for ~6 hours then it got back up to normal without me touching anything. I just saw the dip on the antpool website and the lower average hashrate on my S7 webpage. I thought it was the PSU acting weird.

[Biodom]

Interesting re B1 S7.
It suddenly went from 4.79 Th to 3.65 Th for few hours (before I noticed) without any zeroes or temperature extremes.
Soft reboot fixed the problem.
two possibilities: some chips dropped out, but somehow boards did not show it or miner "got tired' and "decided" to take it easy  
This is one of the earliest B1 machines ever delivered (on day two of B1 delivery-9/24 or so)-hashing close to 3 months already, so it would be interesting if someone else observed the same.

Happened to me once for a B1 delivered early too. Hashrate dropped to 2/3 for ~6 hours then it got back up to normal without me touching anything. I just saw the dip on the antpool website and the lower average hashrate on my S7 webpage. I thought it was the PSU acting weird.

2/3 is probably 2 boards out of three (should be ~3.19 Th), but 3.65 Th is a weird number.

[Tupsu]

Yeah i'm guessing an s7+ is coming end of january/feb, will probably be a monster at 4000w, and you will need 30 pcie cables

If watch  the number Antpool Active Workers  , then the monsters are already mining in antpool.

165 PHs   and  188839 Active Workers .

With 140PHs was over 206000 Active Workers.

[philipma1957]

it would increase the aftermarket value of B1-7.

One positive way of looking at it I suppose.

Always hate it when manufacturers start saving a few cents in this way. I am assuming it's been driven by the Bean Counters rather than a deliberate attempt to stop people plugging up multiple S7 to a single controller?

Or could mean there is an S7+ on the way?

Rich

personally, i don't care anymore...it is not the time to spend BTC, but the time to harvest 'em.

I agree just mine and save btc don't spend any btc.

[wolfen]

So as they said on Batch 8 this looks to be the Final Spec and we have exchanged Spec Changes at every batch for Price Reductions at every Batch.  

Has anyone got any more info / pictures of the controller board, with reduced number of Fan & Hash connectors that was reported?


Rich

Here it is:

http://prntscr.com/9ej2n9

Hmm what a load of meanies...  They have depopulated the board, removing the additional Fan & Hash Board sockets. There may well be other components removed as well, but cannot tell at the moment.


Rich

I'm seeing 3 hash connectors and two fan connectors? All pins gone from the others?

[ATCkit]

Yup- you're seeing it right wolfen.

[BITCOINDENMARK]

Does anyone have any info on the life span of Antminer S7 Batch 8 or Batch 9?
Or at least approximately

Lifespan in terms of making money or reliability?

I am asking because this is going to be my first miner ever. I am planning on running it 24/7 in a really cold room.
Noise is not a problem. Electricity is $0.089 kW/h.
In my country the average monthly payment for a job is $220...
With my calculations this machine is going to be bringing me around $415 per month and around $330 profit. Break even in 3 months .

Break even will be longer my friend.  But "free" heat is always good no ?  With the difficulty rise, you will make 400, then, 350, then 300 per month (im pulling numbers out of thin air), etc.  But you will make a profit even after halving hopefully, you electricity isnt too bad.  Also consider that you will sell the miner after a while.  How much will it be worth after the halving ?  Hard to say.  Judging from experience, it will retain much of its value.  Its a lot of money (even though some people here dont hesitate to drop 50k on miners...but then again its all re-invested money).  Also dont forget customs and taxes, I had to pay over 300$cad (god damn...). 

I have revised my old hardware return vs network difficulty increase chart to shine some light on this.

This document has been shared for anyone to use.

BTC at $150 USD power costs at $0.03 kWh.


BTC at $450 USD power costs at $0.03 kWh.


https://docs.google.com/spreadsheets/d/1ZphwgPk2lySm3sNlHnow6tuwx6YUV0G7qGDtRZ2xFbk/edit?usp=sharing
You will also find other sheets that contain estimated returns that only factor in power costs.
Please note that this does not take into account hardware or other overhead costs.

Thanks for sharing ! 

[AriesIV10]

it would increase the aftermarket value of B1-7.

One positive way of looking at it I suppose.

Always hate it when manufacturers start saving a few cents in this way. I am assuming it's been driven by the Bean Counters rather than a deliberate attempt to stop people plugging up multiple S7 to a single controller?

Or could mean there is an S7+ on the way?

Rich

Yeah i'm guessing an s7+ is coming end of january/feb, will probably be a monster at 4000w, and you will need 30 pcie cables

Hahahahaha!   Maybe 40 pcie cables!  hahahaha 

[SLEI]

So as they said on Batch 8 this looks to be the Final Spec and we have exchanged Spec Changes at every batch for Price Reductions at every Batch.  

Has anyone got any more info / pictures of the controller board, with reduced number of Fan & Hash connectors that was reported?


Rich

My batch 8 has only 2 fan connectors and 3 hashboard connectors.

I got BM powers and they are little bit a pain to install as wires are shorter than told in specs.
Is it OK to use miners sideways connectors and control board pointing left or right?

I have tested power usage and I get xxxs some times which I didn't get with "low end cheap server powers", power efficiency is better naturally.

[babycicak]

hi all,

Im running batch 8 S7, and im using 750W corsair PSU x 3 unit per S7, Everyday im having some problem on the not running board at photo below.
http://www.mms.net.my/bit/IMG_3298.JPG

Does anyone have same problem? please guide and help. I have switch the PSU, the problem is not solved.

Thanks.

[SLEI]

If You want to run fans 3000rpm You have to underclock, I have 3960 rpm and 693Mhz 59-61C temps.

[yslyung]

hi all,

Im running batch 8 S7, and im using 750W corsair PSU x 3 unit per S7, Everyday im having some problem on the not running board at photo below.
http://www.mms.net.my/bit/IMG_3298.JPG

Does anyone have same problem? please guide and help. I have switch the PSU, the problem is not solved.

Thanks.

manual fan n try to bring temps below mid 60's. power the boards before controller. looks weird.

[alh]

I wouldn't lose a lot of sleep over the "missing connectors" on the Batch 8 S7's. The vast majority of the existing S7 purchasers have no idea if their populated and unused connectors actually work. Some of have obviously tinkered with their machines, but 95% have used it as it arrived. After all, if they didn't work, what would you do? Bitmain makes no claim about the unused connectors, and won't "fix" them if they don't work. Even if they did, would you want to send in a working controller (disabling your miner) to get something "fixed" you don't need?

Yes, it looks a little cheap, but way better than some companies (e.g. one PCIe power connector on the KNC Neptune).

In the grand scheme of "S7 Batch number Confusion", this won't matter at all when you resell it.

[vortexz]

I'ts funny how BITMAIN always declared my invoices a bit higher than they actually were.

I paid 12.4 BTC for 4x S7 batch 8 when price of BTC was 418$, meaning I paid 5183 $ for the order.
Their invoice is 5300 $
This rounding up in their favor happened on every of my orders, they always declared a higher value
I wonder why they are doing this ?
my import duties is really high, 24 % of the declared value, so this means I will extra for the import because of this.

They should be helping their customers, instead they are overwhelming them with higher import duties

[dleader]

Does anyone have any info on the life span of Antminer S7 Batch 8 or Batch 9?
Or at least approximately

Lifespan in terms of making money or reliability?

I am asking because this is going to be my first miner ever. I am planning on running it 24/7 in a really cold room.
Noise is not a problem. Electricity is $0.089 kW/h.
In my country the average monthly payment for a job is $220...
With my calculations this machine is going to be bringing me around $415 per month and around $330 profit. Break even in 3 months .

Break even will be longer my friend.  But "free" heat is always good no ?  With the difficulty rise, you will make 400, then, 350, then 300 per month (im pulling numbers out of thin air), etc.  But you will make a profit even after halving hopefully, you electricity isnt too bad.  Also consider that you will sell the miner after a while.  How much will it be worth after the halving ?  Hard to say.  Judging from experience, it will retain much of its value.  Its a lot of money (even though some people here dont hesitate to drop 50k on miners...but then again its all re-invested money).  Also dont forget customs and taxes, I had to pay over 300$cad (god damn...). 

I just self cleared (acted as my own broker) s7's the other day through customs. You should not have had to pay anything but GST. They fall under a trade deal with preferential countries and have no fees.

[scyth33]

miner is stuck in china "clearance event"... how long does it usually take?

[vortexz]

anyone know how much Watts B8 would take if underclocked at 650 Mhz ?