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

[dmwardjr]

So it's better to buy the 2980W 39Y4714 if you are into mining long term. It should be compatible with the Finksy 2880W board, right? If so I may buy 39Y4714 model from now on.

I think J4bberwock's board should still work fine with it.  I'm going to find out.  If it works fine, that's all I'm getting from now on.  I wish I knew about it sooner before I got the 18 x 2880's I have now.

[Prelude]

So it's better to buy the 2980W 39Y4714 if you are into mining long term. It should be compatible with the Finksy 2880W board, right? If so I may buy 39Y4714 model from now on.

I think J4bberwock's board should still work fine with it.  I'm going to find out.  If it works fine, that's all I'm getting from now on.  I wish I knew about it sooner before I got the 18 x 2880's I have now.

They will work fine, the pinout looks to be the same.

I've known for a long time about the efficiency, but I hesitated to put it out there since no one else had ever mentioned it; I figured my units might be old or tired. After further testing, I'm just about sure I'm right. Now I wait for someone to either confirm my findings, or prove me wrong.

[dmwardjr]

That's about the gist of it. When I was looking into using those 2880w-ers for my farm, the 2980w-ers were quite a bit more expensive. I picked up 2880w-ers for ~$50 on average, and the 2980w-ers were not available under $300. They seem to have come down a bit now, though. I of course went with the 2880w-ers as I assumed they were platinum also since that's what I've seen everybody here call them. Measuring DC output and comparing it to AC input tells a different story, though. I've since converted pretty much every PSU in my farm to server PSUs with 93.5-94% efficiency (Which is pretty much Titanium rated) at 100% load as I tend to run them close to or pretty much maxed out. My power only costs about 6c USD, but the savings still add up with the gain in efficiency. The lower heat output is nice too, along with opening up capacity for a few more rigs to run on my pretty much maxed out 200A service.

I may look into the 2980w-ers now that they've come down in price along with j4abber's awesome breakout boards. The ease of use is unparalleled in the server PSU world thanks to his breakout board. My current PSUs require a lot of labour... Mostly soldering, but also rigging up the wires so they're "modular". An interesting fact to note is that the 2880W-ers are made by Astec, but IBM decided to go with Delta as the OEM for the 2980W-ers. Delta are also the OEM on the popular 2000W PSUs. I'm a huge Delta fan boy, every server PSU I run is made by them. They're pretty much top dog as far as I know.

Thanks again for sharing your opinion.  I believe I've pretty much convinced myself to get the 2980's from this day forward after listening to you and doing some research myself.

[dmwardjr]

86 or 87% for the 2880 watter I can confirm it is not as efficient as the evga 1600 t2

The main reason I chose the 86% number for the 2880 is after looking at the numbers on the data sheet for the 2980.  The wattage on a single S7 falls below the sweet spot for the 87% efficiency and 2 x S7's are too high for the sweet spot for best 87% efficiency.  Hence, the 86% number instead of the 87% number.

[dmwardjr]

So it's better to buy the 2980W 39Y4714 if you are into mining long term. It should be compatible with the Finksy 2880W board, right? If so I may buy 39Y4714 model from now on.

I think J4bberwock's board should still work fine with it.  I'm going to find out.  If it works fine, that's all I'm getting from now on.  I wish I knew about it sooner before I got the 18 x 2880's I have now.

They will work fine, the pinout looks to be the same.

I've known for a long time about the efficiency, but I hesitated to put it out there since no one else had ever mentioned it; I figured my units might be old or tired. After further testing, I'm just about sure I'm right. Now I wait for someone to either confirm my findings, or prove me wrong.

I believe you're right.  You've had the 2880 long enough to know.  You also provided the data sheet on the 2980.  I'm quite certain you are correct.  I'm planning on purchasing at least 16 of them over the next 3 to 4 months.  It depends on how soon I get my power upgraded (increased) here at the house.  

I'm hoping to get a $0.062 per kWh rate myself for the following facility:  I need to talk with my power company to see what the requirements will be for that rate.  Otherwise, I'm not going to lease the 5,000 to 6,000 feet I would like to lease.  If I can get that rate, I won't have enough rigs to justify leasing the place until 3 or 4 months from now; unless I was to partner up with someone.  I've covered up the address to it's location in the screenshots.

I'm interested with anyone's thoughts on this data center being able to keep it cool enough for 200+ S7's?

[rockyforever]

So it's better to buy the 2980W 39Y4714 if you are into mining long term. It should be compatible with the Finksy 2880W board, right? If so I may buy 39Y4714 model from now on.

I think J4bberwock's board should still work fine with it.  I'm going to find out.  If it works fine, that's all I'm getting from now on.  I wish I knew about it sooner before I got the 18 x 2880's I have now.

They will work fine, the pinout looks to be the same.

I've known for a long time about the efficiency, but I hesitated to put it out there since no one else had ever mentioned it; I figured my units might be old or tired. After further testing, I'm just about sure I'm right. Now I wait for someone to either confirm my findings, or prove me wrong.

I believe you're right.  You've had the 2880 long enough to know.  You also provided the data sheet on the 2980.  I'm quite certain you are correct.  I'm planning on purchasing at least 16 of them over the next 3 to 4 months.  It depends on how soon I get my power upgraded (increased) here at the house.  

I'm hoping to get a $0.062 per kWh rate myself for the following facility:  I need to talk with my power company to see what the requirements will be for that rate.  Otherwise, I'm not going to lease the 5,000 to 6,000 feet I would like to lease.  If I can get that rate, I won't have enough rigs to justify leasing the place until 3 or 4 months from now; unless I was to partner up with someone.  I've covered up the address to it's location in the screenshots.

I'm interested with anyone's thoughts on this data center being able to keep it cool enough for 200+ S7's?

Simple google search brought up the add btw.

Looks interesting. let me know if your looking for additional investors!

[dmwardjr]

Simple google search brought up the add btw.

Looks interesting. let me know if your looking for additional investors!

I suppose I should have covered up the sign in the photo and AT&T former data center.

[rockyforever]

Simple google search brought up the add btw.

Looks interesting. let me know if your looking for additional investors!

I suppose I should have covered up the sign in the photo and AT&T former data center.

Eh, no biggie

[nhando]

How is the noise level on the IBM 2990W PSU? Did they improve on the FAN used or same as the IBM 2880W? What else about it that makes them better than the IBM 2000 combo other than more power and connections?  I need to prepare for another batch of PSU order soon.

[philipma1957]

How about on a B6 ?.


What could i overclock it whit all 10 pins and 2000bb IBM ?.

Well my issue is my garage was too hot due to really warm weather.   but cooled off so look below

here is a batch 2 freq 575 boards  using the 2x 2000 watt break out board  the 2 psu's are doing 2 avalon sixes and 1 s-7  17 amps 240 volts = 4080 watts 24/7

the s-7 is doing 5150 freq 637  volts are 12.5 or so




the avalon sixes are oveclocked volts are 12.5 but there is a bit of sag

[notlist3d]

How about on a B6 ?.


What could i overclock it whit all 10 pins and 2000bb IBM ?.

Well my issue is my garage was too hot due to really warm weather.   but cooled off so look below

I have the opposite around here it's winter weather and cold.  Can I ask what did you do to cool it off on your garage?

I'm always interested in seeing cooling, and how it varies so much.

[klondike_bar]

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)

[philipma1957]

How about on a B6 ?.


What could i overclock it whit all 10 pins and 2000bb IBM ?.

Well my issue is my garage was too hot due to really warm weather.   but cooled off so look below

I have the opposite around here it's winter weather and cold.  Can I ask what did you do to cool it off on your garage?

I'm always interested in seeing cooling, and how it varies so much.

Misread me.   The NJ weather dropped from 72f to 45f  

My setup can do 4000 watts in colder weather even more say 5300 watts but at 72f outside temps I just downclock.

[SLEI]

I got my batch 8 yesterday which was shipped direct from stock and it is totally different (and 2BTC cheaper) than my 23.11. 2015 shipped batch 8.
Early shipped is only using 1210w from wall and hashing about 4600 with BM power.
This new one is using whopping 200W more with BM power and 4730 Gh/s, same amount of power as batch 7 5300Ghs!!
Batch 8 miners are in same room side by side and running 700Mhz.

I have cut half (6) of the static finns from the exhaust fan of the early bird and inlet fan is running 3600rpm out 3480.
Later batch 8 has different exhaust fan, only 9 static fins but bigger hub area, inlet fan has to run 4200rpm to keep it cool ex 4080, error rate is only 0.0009%.  I conficured the latest miner in colder room for same specs as early bird and didn't notice the different fan and 80C protection had kicked in after 2 hours.

[philipma1957]

I got my batch 8 yesterday which was shipped direct from stock and it is totally different (and 2BTC cheaper) than my 23.11. 2015 shipped batch 8.
Early shipped is only using 1210w from wall and hashing about 4600 with BM power.
This new one is using whopping 200W more with BM power and 4730 Gh/s, same amount of power as batch 7 5300Ghs!!
Batch 8 miners are in same room side by side and running 700Mhz.

I have cut half (6) of the static finns from the exhaust fan of the early bird and inlet fan is running 3600rpm out 3480.
Later batch 8 has different exhaust fan, only 9 static fins but bigger hub area, inlet fan has to run 4200rpm to keep it cool ex 4080, error rate is only 0.0009%.  I conficured the latest miner in colder room for same specs as early bird and didn't notice the different fan and 80C protection had kicked in after 2 hours.

is freq locked at 700 or can you lower it a bit?

say 687.5

 mining the extra 130gh at a price of  200watts  is losing money as you are paying more then 1.5 watts a gh

[Prelude]

Yeah... Thread title needs to be updated. S7 is no longer 4.86TH/s or 0.25J/GH.

Should read:

ANTMINER S7 is available at bitmaintech.com with 4.73TH/s, 0.30J/GH

Since bitcointalk is not accessible from mainland China due to the GFW, could a mod update the title? I'm sure bitmain would in the pursuit of honesty, but they simply can't due to circumstances.   

[citronick]

Hi Guys - I need help on upgrading FW on the S7s to the latest ones.
The Bitmain support page lists a number of FW for different S7 batches and I need 2nd pair of eyes to double check which FW goes to which S7.

My current list as follows:

1. 4.73TH/v.1.32 (700Mhz) - Batch 8
2. 4.46TH/v.2.0 (600Mhz) - Batch ?
3. 4.66TH/v.1.7 (600Mhz) - Batch ?
4. 4.66TH/v.1.7 (600Mhz) - Batch ?
5. 4.73TH/v1.31 (700Mhz) - Batch 8

Appreciate any help.

Regards
TMT

[VirosaGITS]

Hi Guys - I need help on upgrading FW on the S7s to the latest ones.
The Bitmain support page lists a number of FW for different S7 batches and I need 2nd pair of eyes to double check which FW goes to which S7.

My current list as follows:

1. 4.73TH/v.1.32 (700Mhz) - Batch 8
2. 4.46TH/v.2.0 (600Mhz) - Batch ?
3. 4.66TH/v.1.7 (600Mhz) - Batch ?
4. 4.66TH/v.1.7 (600Mhz) - Batch ?
5. 4.73TH/v1.31 (700Mhz) - Batch 8

Appreciate any help.

Regards
TMT

The best advice you will get here is "Don't update". You risk bricking your controller and there is no point in changing firmware in the first place, as there is no new features to be gained from changing from what the S7 comes with.

[Biodom]

Hi Guys - I need help on upgrading FW on the S7s to the latest ones.
The Bitmain support page lists a number of FW for different S7 batches and I need 2nd pair of eyes to double check which FW goes to which S7.

My current list as follows:

1. 4.73TH/v.1.32 (700Mhz) - Batch 8
2. 4.46TH/v.2.0 (600Mhz) - Batch ?
3. 4.66TH/v.1.7 (600Mhz) - Batch ?
4. 4.66TH/v.1.7 (600Mhz) - Batch ?
5. 4.73TH/v1.31 (700Mhz) - Batch 8

Appreciate any help.

Regards
TMT

I second the opinion ^^^^: why upgrade? It's fine w/o.

[citronick]

Hi Guys - I need help on upgrading FW on the S7s to the latest ones.
The Bitmain support page lists a number of FW for different S7 batches and I need 2nd pair of eyes to double check which FW goes to which S7.

My current list as follows:

1. 4.73TH/v.1.32 (700Mhz) - Batch 8
2. 4.46TH/v.2.0 (600Mhz) - Batch ?
3. 4.66TH/v.1.7 (600Mhz) - Batch ?
4. 4.66TH/v.1.7 (600Mhz) - Batch ?
5. 4.73TH/v1.31 (700Mhz) - Batch 8

Appreciate any help.

Regards
TMT

I second the opinion ^^^^: why upgrade? It's fine w/o.

Yes, I kind off agree with that rationale however during failover situation with kano site this week, some of the S7s will continue beeping even when kano is up again. The users with Dec FW applied didnt seems to be affected by this. And that is why, it's probably best to get things up to date before New Year.