OMG, I can't believe no one here has thought about this for 2 mins to think about this in a positive aspect & how its not a miner...

& its not an IOT device, Well not in a sense that i see but a paid for service..... ( I can already here u all saying?? What the??? )

Isn't everyone rushing to get a Silk road / Ebay / Paypal service up & running??

https://openbazaar.org/

Anyone???

Think about this.....

BTC Fullnode + wallet + space for apps, My guess would be an ebay style marketplace & escrow.

Think about loading the service across endless nodes & paying them a small amount to run (Hence the small miner)

So Us$400 is entry to setup a distributed ebay style service & the miner is payback for running the service...

This would get the service setup & running on lots of ip addresses saving them $$$$ on running the servers themselves, Leaving them just to run the backend & escrow service...

I'm pissed i didn't think of this first & seems i'm not the sharpest tool in the shed why no one else here thought of it before me??

Cool thanks for the clarification

Ok so we say 490w +25w for pump = 515w @ 800gh

Best i can get with same firmware & cgminer is :

550w = 0.6875 p/gh (With pump so -25w) = 525w....

Its only 10w shy pretty good if u ask me...

Looks like i'll need to ill need to do another spec sheet with the october firmware...

----------------------------------------------------------------------------------------------------------------

On a side note, I sold my C1 today... So i'll be movin on off this thread, It was fun playing with u all!

So freq 200 & volt 0675 = 490w

with cgminer 4.6.1?

Does that include the watts it takes to run the pump & radiator fans? I know its only about 25w but...

That would make it 515w right??

I'm only asking cause the best i was able to get was 800gh @ 590w using cgminer 4.7 on Nov 25 2014 firmware

& the only differences i can see so far are the october firmware & cgminer 4.6.1...

If that's all it is then ill try to replicate..

So can u tell us what u did to achieve this?? Any hardware hacks or is it all in the software???

What firmware are u using?? What Cgminer? What Freq? & What volt?

I see u used a kill o watt or similar, Was that 2 x C1's running at 960w?? So 480w per unit??

----------------------------------------------------------------------------------------------------------

I just ran a comparison test using the lowest volt setting that seems to work without any x's on the board, Below are my findings..

(Sorry about the caps, I wasn't watching what i was doing when i made the spec sheet up - Too lazy to fix?? - Too trivial to bother??)

ANTMINER C1 - ALL VOLTAGES ARE SET TO 0670V

LATEST FIRMWARE DEC 17 2014 = CGMINER 4.7

------------------------
BEST SETTING = FREQ : 150 X  VOLT : 0670 = 420W @ 615GH = 0.68 PER GH
------------------------

FREQ = 100

SPEED = 400GH

WATTS = 285W

PER 1GH = 0.7125 WATTS

------------------------

FREQ = 125

SPEED = 500GH

WATTS = 370W

PER 1GH = 0.74 WATTS

------------------------

FREQ = 150

SPEED = 615GH

WATTS = 420W

PER 1GH = 0.68 WATTS

------------------------

FREQ = 175

SPEED = 675GH

WATTS = 540W

PER 1GH = 0.8 WATTS

------------------------

FREQ = 200

SPEED = 800GH

WATTS = 590W

PER 1GH = 0.7375 WATTS

-------------------------

FREQ = 218.25

SPEED = 830GH

WATTS = 655W

PER 1GH = 0.78 WATTS

-------------------------

FREQ = 225

SPEED = 935GH

WATTS = 715W

PER 1GH = 0.764 WATTS

-------------------------

Anyone have better settings??

Interesting to compare...

----------------------------------

Hey Bitmain, Its amazing what u can do when u spend 5 mins of ur time to create these results...

Brought down from 0.8 p/gh to 0.68 p/gh - A small but great gain for miners still using old gear..

-----------------------------------

UPDATE

Nicehash firmware with cgminer 4.9

BEST SETTING = FREQ : 150 X  VOLT : 0670 = 410W @ 605GH = 0.677 PER GH

Marginal increase in efficiency = 0.003 not enough 4 most to worry bout but if ur scraping 4 spare watts since the release of the S7 like i am..

Here is my wisdom Meech

Just wanted to update u all on my latest findings for the S4 for under clocking/volting...


Best underclock using sept 04 2014 image

Running on 240 volts (In Australia)

Using Freq : 100 & Volt : 0670

I get around 980gh @ 640w - (Tested with a kill o watt)

---------------------------------------------------------------

https://bitmain.zendesk.com/hc/en-us/article_attachments/200965819/s4sep26.img.gz

u'll need to unzip this & use hdd raw copy to image this to ur sd card (U'll need to take the sd card out of the miner & do this on ur pc)

This will give u undervolting again...

Now i know this uses an old cgminer & is known to have issues so do this..

---------------------------------------------------------------

This will install Smit's low fan firmware (To keep noise to absolute min) & cgminer 4.9. It will also survive a reboot...

Connect to your S4 via SSH. We all know that username is "root", password is "admin". Also we all know that we need use PuTTY software

Then we get into /mnt/mmc1 folder:

Code:
cd /mnt/mmc1

Rename initramfs.bin.SD to initramfs.bin.SD.orig (or with any name convenient for you) to make rollback possible:

Code:
mv initramfs.bin.SD initramfs.bin.SD.orig

Then we can download those tho images for slow fans & cgminer 4.9

Code:
wget http://95.84.240.160:8080/s4_symlink/S4_cgminer_symlink_low_fan.initramfs.bin.SD -O initramfs.bin.SD


Now we are ready to download cgminer. Note that after above steps we have to put cgminer's files to /config/cgminer folder, otherwise mining will not start.

We can now download and put cgminer to the necessary folder with this code:

Code:
cd /config && wget http://95.84.240.160:8080/s4_symlink/cgminer_4.9.0_S4 -O cgminer && chmod +x cgminer

Now type exit & reboot ur machine.

Any problems please ask or pm..

PLEASE BE AWARE - The slow fan firmware should only be used at the underclocked & undervolted settings... U could start a fire if u use this at full speed!!

----------------------------------------------------------------------

UPDATE

If u can get the J7 board to set the voltages correct on startup (This requires a kill o watt or similar)

To do this u'll need to start & restart the machine till the kill o watt tells u the right voltage / watts...

The amount of restarts is random so just keep trying it till it sets right.

Old settings as above with J7 on the loose will give 640w

With the J7 running correctly it will be 600w, (Tested with a kill o watt) That's another 40w saving....

-----------------------------------------------------------------------------

Hey Bitmain I believe i finally got ur 0.6w u were original boasting about, Just funny it took ur new product to come to market before

this ever happened..

-----------------------------------------------------------------------------

I believe this is the maximum savings we will get out of the S4 until someone does a hardware hack...

Be interesting to see if anyone can replicate or better these settings!

Big thanks goes to : sjenja who worked out the J7 problem...

Can u be more specific on details about how to do this??

And does it last a reboot??


---------------------------------------------------------------

Best underclock using sept 04 2014 image

Running on 240 volts (In Australia)

Using Freq : 100 & Volt : 0670

I get around 980gh @ 640w - (Tested with a kill o watt)

---------------------------------------------------------------

https://bitmain.zendesk.com/hc/en-us/article_attachments/200965819/s4sep26.img.gz

u'll need to unzip this & use hdd raw copy to image this to ur sd card (U'll need to take the sd card out of the miner & do this on ur pc)

This will give u undervolting again...

Now i know this uses an old cgminer & is known to have issues so do this..

---------------------------------------------------------------

This will install Smit's low fan firmware (To keep noise to absolute min) & cgminer 4.9. It will also survive a reboot...

Connect to your S4 via SSH. We all know that username is "root", password is "admin". Also we all know that we need use PuTTY software

Then we get into /mnt/mmc1 folder:

Code:
cd /mnt/mmc1

Rename initramfs.bin.SD to initramfs.bin.SD.orig (or with any name convenient for you) to make rollback possible:

Code:
mv initramfs.bin.SD initramfs.bin.SD.orig

Then we can download those tho images for slow fans & cgminer 4.9

Code:
wget http://95.84.240.160:8080/s4_symlink/S4_cgminer_symlink_low_fan.initramfs.bin.SD -O initramfs.bin.SD


Now we are ready to download cgminer. Note that after above steps we have to put cgminer's files to /config/cgminer folder, otherwise mining will not start.

We can now download and put cgminer to the necessary folder with this code:

Code:
cd /config && wget http://95.84.240.160:8080/s4_symlink/cgminer_4.9.0_S4 -O cgminer && chmod +x cgminer

Now type exit & reboot ur machine.

Any problems please ask or pm..

PLEASE BE AWARE - The slow fan firmware should only be used at the underclocked & undervolted settings... U could start a fire if u use this at full speed!!

----------------------------------------------------------------------

UPDATE

If u can get the J7 board to set the voltages correct on startup (This requires a kill o watt or similar)

To do this u'll need to start & restart the machine till the kill o watt tells u the right voltage / watts...

The amount of restarts is random so just keep trying it till it sets right.

Old settings as above with J7 on the loose will give 640w

With the J7 running correctly it will be 600w, That's another 40w saving....

If bitmain does release an upgrade pack for these of an add on miner or 2 be it as the controller will run 3 at a time...

The only saving anyone will make is on the controller & that begs the question.. How much is a controller worth??

Maybe $50 a unit so the saving will be $100 at most... I think u'll be better of getting the extra controller as phil had said

I can see a thread being dedicated to busted controllers for these coming out... & who wants 15th offline while u rma a controller...

The extra $50 for the controller is a no brainer as it adds no extra weight to the package for delivery..

Underclocking numbers??

Speed / Volt / watts??

Absolute lowest to compare against 1250w @ 4.9th

So at current count on bitmain's wallet

https://blockchain.info/charts/n-transactions?timespan=180days&showDataPoints=false&daysAverageString=1&show_header=true&scale=0&address=1KwA4fS4uVuCNjCtMivE7m5ATbv93UZg8V

Just under 500 units of S7's sold so far as a pre release.....

It will be interesting to see if S7 + or - are ever released..

Maybe the S7 from Bitmain has forced them back to the drawing board???

The S7 is quite a step forward in anyones books... Even if they have sorted how to mine both Sha & script at the same time...

I'm in Australia & have a C1 for US$300 us running with no problems.. Plus postage

Also have an S4 running no problems for US$500 plus post

Pm me if interested




These items have been sold!

Selling my S4 for AU$1000+ postage... I'm in australia...

Pm me


This item has now been sold

So now they have released spec's for the new chips...

0.25gh then at 2w, Lets say the router takes 0.5 to run leaving 1.5 for mining...

At 2w this is a 6gh always on miner, Mining at bitmains pool....

& as a solo device for us but if bitmain puts this on for themselves...

They could pool mine with it, Make us solo mine with it but as its pool mined for them...

They only have to pay a miner running a R1 when & if they hit a block.....

Imagine being able to hit ur own pool with 6gh x ? miners (? would be determined roughly by how many miners on average bitmain has sold per unit...  ie they sold 1000 S1's 10,000 S3's etc & average that out across all miners sold to date..)

Lets say for arguments sake they sold on average across all miners 100,000 units

100,000 units x 6 gh is = 600,000gh all pointed at there own pool on top of there on units & managed farms...

This might not sound like much & my figures may understate this by miles (U never know - Well bitmain does)

This extra hash for nothing is worth something, They don't have to pay for power & to top that off they prob collect the fee's that come off the top...

Now if CK can run his solo pool collecting 0.5% off the top of any coin earnt then if bitmain takes all the fee's off the top & only pays the block coins, Then this will make them a tidy sum, esp if u take into consideration the block halving & going into the future fee's going up & up...

Any other thoughts??

Thanks for clearing things up guys...

I think my head was on another planet the day i commented on this....

I really had no idea!

Dude i tried chasing Smit for the firmware with a donation to no avail, I also tried prelude (I understand dude its not urs to sell)

If there are others out there like us 2 please talk up now to see if there is any chance of ever getting this firmware so we can undervolt!!

Lovenlifelarge October 30th 2015

Please be careful taking advice from Meech as he doesn't have a kill o watt & doesn't run tests on his own machine to give u the right advice u need... Oh & did i mention his S4 was in getting fixed last time we checked in...

Please read the comments on the page or so before this & make up ur own mind as to weather u take his advice or not..

lovenlifelarge 5.0btc 1DkosphhLbmRqqmaqu48sAbDKuCrGet2U7

I am ignorant here or what? I dont understand the need for this??

Am i to take this is really a custom controller for the S3 (Made from the idea of a S1 controller)

If so is the only benefit here is for S3 owners who have had the controller die & need a replacement?