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

[marvykkio]

I am afraid of the taxes that I can search for both the customs and also fedex

[1715115713]

1715115713

[1715115713]

1715115713

[1715115713]

1715115713

[marvykkio]

SOMETHING WORTH A TRY

SHIPITO.COM

SHIPS TO AMERICA OR OTHER CHOSEN DESTINATION,DECLARE WHAT YOU WANT AND RESHIP TO YOU IN E.U.

Scream how much you want , it does not seem credible to me.

It does not look bad service shipito.com
But I do not understand a thing.
if I buy from bitmain, and I send it in Austria, I have to pay customs fees in Austria, and then I have to pay shipping from Austria to Italy + shipping.

where's the savings ?

[Prelude]

If you've had issues with B8: https://bitcointalk.org/index.php?topic=1313617.0

[marvykkio]

many of you in the past have criticized me because I have always said that bitmain uses bad material
  as you can see there are always problems, and there will be even more miner who will build

[djroadking]

Haven't ordered an S7 yet... Probably will order tomorrow since I will have time off work. Have never ordered anything from bitmain so maybe customs will get me or not who knows. Ordering only 1 miner.

[soyab0007]

What will be the custom charges in India for 1 machine?

[lanfeusst]

it possible to get the PWM to go lower? If i enter 1%, 5%, 10% there's no noticed difference in volume.

noise isnt bad, about equal to an S3 in a warm room, maybe a tad more 'penetrating'. With the cold air from outside, I can achieve good hashrates with a low fanspeed, but if i could get it 20% quieter at the cost of ~200GH I'd be happy to do so.

Without the cold air from outside, low-rpm is far from sufficient if i am tageting a 55-60C operational temperature
20C (ambient) = 3.6TH
10C = 4TH
5C = 4.3TH
0C = 4.6TH
-5C = 4.8TH (and 0.011% errors, havent pushed further yet)

It is possible to go lower than 20% PWM with my modified bitmain_spi file :
The only modification is that it can go to 10% min instead of 20% min. (You still need to set the fan percentage to what you want  : example 18%)
This allows to effectively  decrease the noise from the s7 (totally silent if set at 10%) if you are in a very cold ambient temperature or if you downclock the frequency seriously
It should not be used if the temperature is > 70°C. Check that the stop miner when temp is over 80°C box is checked in the configuration page.

Download here :
https://mega.nz/#!8BUVVa7K!pSyaXVVjxfkthPdgJUSabKQQaRiVi1s6-zct5Ob32iM
The original is here if you need it :
https://mega.nz/#!MctVRR7D!lEEb0NvQQNtAemzYNawEAtp8qMVi75dxOLqwNFqv7To

To use it :
scp bitmain_spi_s7_fan_10.ko root@192.168.0.16:/config/           #Copy the file to the miner
then ssh to the miner :
ssh root@192.168.0.16
then :

Code:

cp /lib/modules/3.8.13/kernel/drivers/bitmain/bitmain_spi.ko /config/bitmain_spi_original.ko        #Makes a backup
cp /config/bitmain_spi_s7_fan_10.ko /lib/modules/3.8.13/kernel/drivers/bitmain/bitmain_spi.ko         # Copy the new file to the good place
/etc/init.d/cgminer.sh stop ; /etc/init.d/cgminer.sh start                                    #restart cgminer

The modification will be gone if you restart your miner.
If you want to do it again after a restart you only need to do the two last command :

Code:

cp /config/bitmain_spi_s7_fan_10.ko /lib/modules/3.8.13/kernel/drivers/bitmain/bitmain_spi.ko         # Copy the new file to the good place
/etc/init.d/cgminer.sh stop ; /etc/init.d/cgminer.sh start                                     #restart cgminer

If my new binaries help you and you are satisfied, consider helping me by sending some bitcoins to my address:
1NfUptoShEtSD2SQV2f45Xr1bTysFnsHiU

Warning: Do nothing you don't understand ; No warranties whatsoever are given by me ; this could not work or be useless ; this could burn your S7 or make it useless ; this could void your warranty with bitmain.

It works! looking at the two files, seems the difference is 2-3 hex values that are modified. The method provided above works, but heres the easy way for those on windows:

CAUTION: comparing the modified file against the original THAT WAS ON MY BATCH 8 shows a large number of differences, as does comparing my original with the "original" file uploaded above.  The vast majority of changes seem to be incremental hex values: 4F becomes 4E, 83 becomes 82, 9A becomes 99, etc. not sure why though

SOLUTION: using a site like www.diffnow.com, compare the existing bitmain_spi.ko file with the modified one provided above. If there are only 2-3 changes its safe to change. If Its a batch8 system, Ive made a modified file here:  https://mega.nz/#!wAcA3SrZ!2cVcpIR4qjJY2xmFvRREOMlVYFLk6YtzIxQNteGdWe0  (works to 10% fan, and with this the system runs fans at max when changing settings, as it did when stock) (based on this original (S7, B8): https://mega.nz/#!kYdC2bTD!kcBid6lMeN9ygYxJ2sprMhRBmDJ-bwaBO3ldZPCHWiU)


1) download the modified file above.
2) download and run winscp.
3) connect to miner (SCP mode, port 22, root/admin). navigate to folder:   /lib/modules/3.8.13/kernel/drivers/bitmain/
4) rename bitmain_spi.ko to bitmain_spi_original.ko
5) transfer the bitmain_spi_s7-fan_10.ko file to that directory, and then rename as bitmain_spi.ko
6) login to the miner's webUI. change fan setting there and "save&apply"
Not sure if changing it this way will survive a reboot, but the process is simple to repeat.

OPTIONAL:
7) copy the bitmain_spi_s7_fan_10.ko file to /config/bitmain_spi_s7_fan_10.ko
if modifications are lost on system restart, SSH in and type:    

Code:

cp /config/bitmain_spi_s7_fan_10.ko /lib/modules/3.8.13/kernel/drivers/bitmain/bitmain_spi.ko         # Copy the new file to the good place
/etc/init.d/cgminer.sh stop ; /etc/init.d/cgminer.sh start                                     #restart cgminer

interesting sidenote, when changing settings in the lanfeusst version, the fan goes quiet, then spins up (before it went full blast, then reduced speed)

Nice
I guess you did the modification for the new firmware dated 2015-12-11.
My S7 Batch 1 was with the 10-23 firmware that is why there is so many difference between our 2 files.
That also means they finally fixed the burn to death issue with auto on the december firmware. Since it will now go full blast if it loses internet connection instead of going to 20% before on auto.

The sound is natural to  an with such high rpm and airflow, dissipating 1200W+ in a short tube. The SP20 was equally loud, almost worst at full speeds, most people had to run it <900W if they wanted the fans to spin at a LESS-loud speed. same for gear like the S5, SP10/SP3x

With the software tweak to get fans <20%, noise is actually quite bearable. I have them machine fed 0C outside air, so can keep the volume down without much issue.

20% fan @ 4.7TH with 62-67C temperatures (board 3 is hottest?). noise is as good as the S3
17% fan @ 4.5TH. noise is totally acceptable to be in the main room
15% fan @ 4.3TH. quiet. similar to a game console or desktop computer that has loud(ish) fans

Happy to see you can enjoy nice silence now.

[lanfeusst]

Holy Smoking HOT!  That is really pushing it.  Keep us informed if you have any issues.  You are getting COIN right now and I hope that you can continue to get COIN later! 

Yes, I'm like you.  I wonder how long it will last?  

Anyway, THAT is some serious mining there with the S7.  Can't be done without increasing the voltage.  Great job!

Keeping you updated :
My S7 Batch 1 is still going strong at 700 Mhz, 12.75 V :

[yslyung]

What will be the custom charges in India for 1 machine?

on top of table or below the table ? hmmm

[Seba13xp]

Holy Smoking HOT!  That is really pushing it.  Keep us informed if you have any issues.  You are getting COIN right now and I hope that you can continue to get COIN later!  

Yes, I'm like you.  I wonder how long it will last?  

Anyway, THAT is some serious mining there with the S7.  Can't be done without increasing the voltage.  Great job!

Keeping you updated :
My S7 Batch 1 is still going strong at 700 Mhz, 12.75 V :
https://i.imgur.com/wh99gDA.png

How much are you making on kano pools daily avg. thinking about switching but what to make at less 0.032 btc daily.

[Questor]

Holy Smoking HOT!  That is really pushing it.  Keep us informed if you have any issues.  You are getting COIN right now and I hope that you can continue to get COIN later!  

Yes, I'm like you.  I wonder how long it will last?  

Anyway, THAT is some serious mining there with the S7.  Can't be done without increasing the voltage.  Great job!

Keeping you updated :
My S7 Batch 1 is still going strong at 700 Mhz, 12.75 V :
[IMAGE REDACTED]

Are you able to measure your draw with that stepped up supply?

[lanfeusst]

Holy Smoking HOT!  That is really pushing it.  Keep us informed if you have any issues.  You are getting COIN right now and I hope that you can continue to get COIN later!  

Yes, I'm like you.  I wonder how long it will last?  

Anyway, THAT is some serious mining there with the S7.  Can't be done without increasing the voltage.  Great job!

Keeping you updated :
My S7 Batch 1 is still going strong at 700 Mhz, 12.75 V :
[IMAGE REDACTED]

Are you able to measure your draw with that stepped up supply?

Yes, The power comsumption at the wall is 1590 watts => 0.28 J/Gh ( psu is dps-2000bb )

[lanfeusst]

Holy Smoking HOT!  That is really pushing it.  Keep us informed if you have any issues.  You are getting COIN right now and I hope that you can continue to get COIN later!  

Yes, I'm like you.  I wonder how long it will last?  

Anyway, THAT is some serious mining there with the S7.  Can't be done without increasing the voltage.  Great job!

Keeping you updated :
My S7 Batch 1 is still going strong at 700 Mhz, 12.75 V :
https://i.imgur.com/wh99gDA.png

How much are you making on kano pools daily avg. thinking about switching but what to make at less 0.032 btc daily.

I'm not sure, i'm making ~0.019 btc per block now and payments is each block

[fr4nkthetank]

Holy Smoking HOT!  That is really pushing it.  Keep us informed if you have any issues.  You are getting COIN right now and I hope that you can continue to get COIN later!  

Yes, I'm like you.  I wonder how long it will last?  

Anyway, THAT is some serious mining there with the S7.  Can't be done without increasing the voltage.  Great job!

Keeping you updated :
My S7 Batch 1 is still going strong at 700 Mhz, 12.75 V :

How much are you making on kano pools daily avg. thinking about switching but what to make at less 0.032 btc daily.

You aren't going to make 0.032 btc with one 4.7 antminer...go on f2pool, search help, and you will see the per ths PPS rate.  thats 96% of 100% luck or something like that.  I'm on Kano pool, its not PPS but I feel the luck is better, and its also good to mine on a smaller pool for the network.  PPS is my backup pool, for those few short times when the pool is down. 

[dance191]

Does anyone know if it is a UPS agent who assigns the HST import codes to packages or if it is a customs agent for the government who assigns the HST import code to packages?

Your customs broker does the entry and at that point they are responsible for entering the correct code when they submit the entry to customs.  That is why you/they need a customs bond (in case they do something wrong the government can go after the money in the bond). 

Since UPS acted as your customs broker, they picked the code for the entry they submitted to customs.  No one in the government entered the code.  Neither did Bitmain. 

[padrino]

Does anyone know if it is a UPS agent who assigns the HST import codes to packages or if it is a customs agent for the government who assigns the HST import code to packages?

Your customs broker does the entry and at that point they are responsible for entering the correct code when they submit the entry to customs.  That is why you/they need a customs bond (in case they do something wrong the government can go after the money in the bond). 

Since UPS acted as your customs broker, they picked the code for the entry they submitted to customs.  No one in the government entered the code.  Neither did Bitmain. 

UPS does charge administrative fees for customs processing.. So even if you do not actually pay customs fees UPS will bill you for the processing..

[Pissenlit]

I say pay it, but then dispute it at the customs agency if you think you shouldnt be paying it.  i mean, could be worse, i have a 330$cad bill for just ONE (canada).  disputing it, but we shall see what that does...

Which carrier have you used? UPS?

I always have problems with FedEx since many years so I try to avoid them, and DHL is the cheapest for Canada shipping from China.

I'll order new S7s soon, each on separate orders, but I don't want to pay 300$CAD for each miner. Thanks!

[dmwardjr]

How much are you making on kano pools daily avg. thinking about switching but what to make at less 0.032 btc daily.

I've started keeping up stats with rewards with the CKPool Monitor created by Zach.  The stats don't lie.  You see the stats in AMOUNT PER TH/s in each column.  I have not been at kano long enough for the 30 day and 60 day column to catch up with the 7 day and 14 day columns yet.  Which means the 30 day and 60 day columns have insufficient data at the moment.  Give it more time...

You'll notice the 14 day column average per TH/s is 0.00832183 BTC and the 7 day average is 0.00813792 BTC.  I gave the 14 day first because it's more sufficient data over a longer period.  Also, I have not had all of my hash added to the pool.  I actually took my hash away a couple of times and brought it back.  Both times was for about 24 hours.  YET, I still got paid while I was away when blocks were found.  I came back the moment a block was found.  I've determined it's best just to keep all your hash there during slow times and good times.

On NiceHash at the moment, one gets paid in PPS at a rate of .0047 per TH/s.  Now compare that to .00832183 over 2 weeks and .00813792 over the past week at kano.is

I have 104.5 TH/s pointed to CK/Kano Pool.  It was 94.5 TH/s but I pointed another 2 x S7's at the pool yesterday.  Also, I needed to add the data of the most recent block found at kano.is to the chart below.  I felt this was sufficient enough for now for you to get an idea.

The reason my payout for the last block was less than previous even though I had more hash is because the pool had increased in hash rate.  Also, the difficulty increased as well.

[citronick]

Re-sharing summary building my S7 mini farm:

I have 4 x B8s in my small farm, they are running but running hot +10c compared to other batches 600mhz.

1. all 7 x S7s are patched with Dec11 FW on 1st Jan 2016.
2. the irritating whoooooo sound has gone away in the last 2 x B8 ordered in mid-Dec (but they are running high temp 68-72c at fans 100%)
3. the whoooo sound in the other earlier 2 x B8 was rectified at 54% fan ratio with acceptable temp ~ 60-65c
4. the rest of the S7s are 600mhz variants, running 55% fan speed (to eliminate the whoooo sound) with 55-65c temps
5. All my S7s are VERTICALLY mounted - stock fans blowing upwards - with 2 box fans running at medium from below the rack.
6. HWE% are very small and I am satisfied with the hashing rate and quite stable to my liking.
7. All fans are stock with no mods.
8. My electrical setup was recently upgraded and all S7s are with dedicated points at 10amp/240v per point. I now have my own separate 120A/240v power distribution board for the miners.
9. The PSU power cord are all standardized with 1.5mm 13AMP/250v BS1363.
10. Each of the S7 are powered by the stock 1600w PSU from BMT with no mods.
11. All the above hashing power (33TH+) goes to kano.is since early Dec.
12. 5 x S7s were bought directly from BMT and shipped by DHL. No shipping issues.

That's my setup and journey so far, thanks to the many tips and guidance from this forum.

Although I don't have any bad units from BMT (fingers crossed), I feel for the rest because the miners are quite an investment. Hang on in there and keep sharing so that we could collectively help each other....

[dmwardjr]

Does anyone know if it is a UPS agent who assigns the HST import codes to packages or if it is a customs agent for the government who assigns the HST import code to packages?

Your customs broker does the entry and at that point they are responsible for entering the correct code when they submit the entry to customs.  That is why you/they need a customs bond (in case they do something wrong the government can go after the money in the bond). 

Since UPS acted as your customs broker, they picked the code for the entry they submitted to customs.  No one in the government entered the code.  Neither did Bitmain. 

Thanks for that info, dance.  Much appreciated!