ANTMINER S2 Discussion and Support Thread

[klondike_bar]

Anyone managed to push theirs past 225?
Every time I 250, it jumps up to 1275W in, but beeps constantly and eventually drops back down in 5-10 seconds.

Edit: At 225M I get 1153GH/s using 1148W using an EVGA 1300W G2 on 115V. It will probably be a little better on 240V, but I don't have per-outlet metering on my PDU and I wanted to get power measurements using my KillAWatt.

To get it running @ +225Mhz I would suggest to up the voltage to 0.85V... Get out your pencil!!

Where's the rocket scientist when u need one?

check the overclocking thread. There will be two resistors associated with the output voltage of the TPS53355 regulator. using a pencil mod on one will increase voltage and pencil modding the other will decrease it. Figure out which one ups the voltage and go to town - 0.9V will probably unlock ~1.25TH/1350W.  0.95V might be sufficient for up to ~1.35TH/1.6kW  if you can cool it a lot better then stock

[1714787943]

1714787943

[MrTeal]

Anyone managed to push theirs past 225?
Every time I 250, it jumps up to 1275W in, but beeps constantly and eventually drops back down in 5-10 seconds.

Edit: At 225M I get 1153GH/s using 1148W using an EVGA 1300W G2 on 115V. It will probably be a little better on 240V, but I don't have per-outlet metering on my PDU and I wanted to get power measurements using my KillAWatt.

Mr Teal:   You can plug a killawatt directly into 220, it works.

my S2 
clocked 200
volts  220.2
amps  4.72 
watts  1022
hash  1020

Mine doesn't, it reads 160V and almost no current. It is an older one though, so it's entirely possible that a new revision has fixed that.
After running all night, I'm now getting 1150GH/s with 1200W power draw, with the board 1 at 59C and the rest around 50C in a 25C room.

[cyberspaced]

Anyone managed to push theirs past 225?
Every time I 250, it jumps up to 1275W in, but beeps constantly and eventually drops back down in 5-10 seconds.

Edit: At 225M I get 1153GH/s using 1148W using an EVGA 1300W G2 on 115V. It will probably be a little better on 240V, but I don't have per-outlet metering on my PDU and I wanted to get power measurements using my KillAWatt.

To get it running @ +225Mhz I would suggest to up the voltage to 0.85V... Get out your pencil!!

Where's the rocket scientist when u need one?

check the overclocking thread. There will be two resistors associated with the output voltage of the TPS53355 regulator. using a pencil mod on one will increase voltage and pencil modding the other will decrease it. Figure out which one ups the voltage and go to town - 0.9V will probably unlock ~1.25TH/1350W.  0.95V might be sufficient for up to ~1.35TH/1.6kW  if you can cool it a lot better then stock

I have a S1 on 0.86V and max clock is 250M (128GH), with 164W at the wall. 275M gives 138GH but over 10% HW error and 180W consumption.

[jjiimm_64]

Mr Teal:   You can plug a killawatt directly into 220, it works.

my S2 
clocked 200
volts  220.2
amps  4.72 
watts  1022
hash  1020

Are the fans running with 1022w being pulled? If so, what speed?

Seems there is some pretty serious variance between machines.

gig, there is much varience...  my other S2 does not do this well..

also, this is early morning after a night of cool air.. later today I expect 1075 watts and a 4.88amp reading.

[jamesg]

gig, there is much varience...  my other S2 does not do this well..

also, this is early morning after a night of cool air.. later today I expect 1075 watts and a 4.88amp reading.

That would definitely explain it then. I'm getting 5.2 amps on 208v (1082w) in the data center.

[nikolaz]

So UPS should be delivering my S2s today... I am picking up a case of red bull just in case I will need to up all night setting up all of the miners one by one...

Thank you for everyone who had posted their solutions as I feel prepared for the long night ahead.

[btc_jumpnrl]

So while I love the S2, its just not as small apartment friendly as the S1s. I have one S2 in Raleigh, NC. Looking to get rid for equivalent price of Batch 2 ($3600 USD or btc) PM if interested. 

[dplusf]

any news when ants will be available again?

[nikolaz]

any news when ants will be available again?

∞

[innoman]

any news when ants will be available again?

There are several posts about this throughout the thread... just search for bitmain, cxboy or topminingcontracts any time you have any questions about when.  Maybe after the next batch ships, maybe not--until they are up there, nobody knows. 

[goggles1200]

I hope the site keeps on selling. I've got no response from bitmaintech in over a week to an email. If you look closely, there are no products in stock at this point in time. I wonder what's up.

[klondike_bar]

Anyone managed to push theirs past 225?
Every time I 250, it jumps up to 1275W in, but beeps constantly and eventually drops back down in 5-10 seconds.

Edit: At 225M I get 1153GH/s using 1148W using an EVGA 1300W G2 on 115V. It will probably be a little better on 240V, but I don't have per-outlet metering on my PDU and I wanted to get power measurements using my KillAWatt.

To get it running @ +225Mhz I would suggest to up the voltage to 0.85V... Get out your pencil!!

Where's the rocket scientist when u need one?

check the overclocking thread. There will be two resistors associated with the output voltage of the TPS53355 regulator. using a pencil mod on one will increase voltage and pencil modding the other will decrease it. Figure out which one ups the voltage and go to town - 0.9V will probably unlock ~1.25TH/1350W.  0.95V might be sufficient for up to ~1.35TH/1.6kW  if you can cool it a lot better then stock

I have a S1 on 0.86V and max clock is 250M (128GH), with 164W at the wall. 275M gives 138GH but over 10% HW error and 180W consumption.

sounds about right then - the S2 is basically 10 S1 units running at clocks similar to your current ones (ps: why dont you run your S1 at stock clocks right now - You would be making a lot more profit then with your underclocked speeds)

A small pencil mod to increase to S2 voltage should make >1.25TH possible. The PCI slot seems to use mutliple pins on a common blade of the cards to provide voltage. It looks pretty good method, and it *might* work with a ribbon cable, but a fat pair of 12AWG wires to carry the voltage would be the best way

MrTeal - what sort of temperatures does it hit at 225MHz - did you modify cooling?

[cyberspaced]

Anyone managed to push theirs past 225?
Every time I 250, it jumps up to 1275W in, but beeps constantly and eventually drops back down in 5-10 seconds.

Edit: At 225M I get 1153GH/s using 1148W using an EVGA 1300W G2 on 115V. It will probably be a little better on 240V, but I don't have per-outlet metering on my PDU and I wanted to get power measurements using my KillAWatt.

To get it running @ +225Mhz I would suggest to up the voltage to 0.85V... Get out your pencil!!

Where's the rocket scientist when u need one?

check the overclocking thread. There will be two resistors associated with the output voltage of the TPS53355 regulator. using a pencil mod on one will increase voltage and pencil modding the other will decrease it. Figure out which one ups the voltage and go to town - 0.9V will probably unlock ~1.25TH/1350W.  0.95V might be sufficient for up to ~1.35TH/1.6kW  if you can cool it a lot better then stock

I have a S1 on 0.86V and max clock is 250M (128GH), with 164W at the wall. 275M gives 138GH but over 10% HW error and 180W consumption.

sounds about right then - the S2 is basically 10 S1 units running at clocks similar to your current ones (ps: why dont you run your S1 at stock clocks right now - You would be making a lot more profit then with your underclocked speeds)

A small pencil mod to increase to S2 voltage should make >1.25TH possible. The PCI slot seems to use mutliple pins on a common blade of the cards to provide voltage. It looks pretty good method, and it *might* work with a ribbon cable, but a fat pair of 12AWG wires to carry the voltage would be the best way

MrTeal - what sort of temperatures does it hit at 225MHz - did you modify cooling?

I have more than one S1. I ghettoed one just to check performance and durability of the pencil mod. It runs at 41-43 degrees C ( room temp. 20C ), 1320RPM fanspeed and 3 HW errors a day in average!

[klondike_bar]

Anyone managed to push theirs past 225?
Every time I 250, it jumps up to 1275W in, but beeps constantly and eventually drops back down in 5-10 seconds.

Edit: At 225M I get 1153GH/s using 1148W using an EVGA 1300W G2 on 115V. It will probably be a little better on 240V, but I don't have per-outlet metering on my PDU and I wanted to get power measurements using my KillAWatt.

To get it running @ +225Mhz I would suggest to up the voltage to 0.85V... Get out your pencil!!

Where's the rocket scientist when u need one?

check the overclocking thread. There will be two resistors associated with the output voltage of the TPS53355 regulator. using a pencil mod on one will increase voltage and pencil modding the other will decrease it. Figure out which one ups the voltage and go to town - 0.9V will probably unlock ~1.25TH/1350W.  0.95V might be sufficient for up to ~1.35TH/1.6kW  if you can cool it a lot better then stock

I have a S1 on 0.86V and max clock is 250M (128GH), with 164W at the wall. 275M gives 138GH but over 10% HW error and 180W consumption.

sounds about right then - the S2 is basically 10 S1 units running at clocks similar to your current ones (ps: why dont you run your S1 at stock clocks right now - You would be making a lot more profit then with your underclocked speeds)

A small pencil mod to increase to S2 voltage should make >1.25TH possible. The PCI slot seems to use mutliple pins on a common blade of the cards to provide voltage. It looks pretty good method, and it *might* work with a ribbon cable, but a fat pair of 12AWG wires to carry the voltage would be the best way

MrTeal - what sort of temperatures does it hit at 225MHz - did you modify cooling?

I have more than one S1. I ghettoed one just to check performance and durability of the pencil mod. It runs at 41-43 degrees C ( room temp. 20C ), 1320RPM fanspeed and 3 HW errors a day in average!

I appreciate seeing the voltage/speeds/wattage results posted for these sort of mods, so tip of the hat    For me at $0.15/kwh it makes more sense to run all my gear at full tilt (under 0.7% hw errors of course) for at least until the start of summertime

[buckrogers]

Hi,

Iv'e uploaded a few pics of my S2 in case anyone wanted some extra view of the units insides.

Thanks!

https://i.imgur.com/oANwkex.jpg - Delivered
https://i.imgur.com/DXruTs2.jpg - Opened Box
https://i.imgur.com/9RqxWwN.jpg - Removed Packaging
https://i.imgur.com/NCeGhg3.jpg - Wrong Plug
https://i.imgur.com/9C8K104.jpg - Open Cover - Top View
https://i.imgur.com/wD90idj.jpg - Open Cover - Top View2
https://i.imgur.com/hSSbxBI.jpg - Open Cover - Side View
https://i.imgur.com/LqMLcrg.jpg - Open Cover - Front View
https://i.imgur.com/JTfAUXp.jpg - Open Cover - Rear View
https://i.imgur.com/PnuwydO.jpg - PSU Close-up
https://i.imgur.com/Qdob5FM.jpg - Gooey Glue on main BBB Board Bottom
https://i.imgur.com/09q8Sz6.jpg - Gooey Glue Close-up on main BBB Board Bottom

[nikolaz]

So UPS should be delivering my S2s today... I am picking up a case of red bull just in case I will need to up all night setting up all of the miners one by one...

Thank you for everyone who had posted their solutions as I feel prepared for the long night ahead.

Both machines arrived... all of the boards were seated (even after customs decided to open the package and the case)... Only issue I have is one of the LCD screens is not working but I feel lucky considering some of the horror stories.

When people said they were loud... they were not kidding...

Edit: LCD screen fixed too... It seems that keeping the Getway at 192.168.1.1 seems to work right out of the box.

[BitCoin Operated Boy]

Any news on a batch #3?

I e-mailed over a week ago and I was told that new S2 batch will be on sale before mid April

[goggles1200]

Any news on a batch #3?

I e-mailed over a week ago and I was told that new S2 batch will be on sale before mid April

Glad someone is getting some kind of response from them. I don't know if the price point is right yet.

[goggles1200]

Hi,

Iv'e uploaded a few pics of my S2 in case anyone wanted some extra view of the units insides.

Thanks!

https://i.imgur.com/oANwkex.jpg - Delivered
https://i.imgur.com/DXruTs2.jpg - Opened Box
https://i.imgur.com/9RqxWwN.jpg - Removed Packaging
https://i.imgur.com/NCeGhg3.jpg - Wrong Plug
https://i.imgur.com/9C8K104.jpg - Open Cover - Top View
https://i.imgur.com/wD90idj.jpg - Open Cover - Top View2
https://i.imgur.com/hSSbxBI.jpg - Open Cover - Side View
https://i.imgur.com/LqMLcrg.jpg - Open Cover - Front View
https://i.imgur.com/JTfAUXp.jpg - Open Cover - Rear View
https://i.imgur.com/PnuwydO.jpg - PSU Close-up
https://i.imgur.com/Qdob5FM.jpg - Gooey Glue on main BBB Board Bottom
https://i.imgur.com/09q8Sz6.jpg - Gooey Glue Close-up on main BBB Board Bottom

Thank you for the pictures. Looks very interesting. Wonder how they came up with that design. Smaller heatsinks with more boards instead of using the S1 boards and just jamming into a case.

[philipma1957]

so fast questions.

 who has one mining at btcguild ?

who has one getting 1th ?

 who has one at 950 watts or less?


So far from what I read I am not that impressed.  

 Seems to me a 2x s-1 under clocked to 300 gh pulling 300 watts

 would have been:

 A easier to make
 B cheaper to ship  
 C  fit in a much smaller case

 Frankly I think they fucked up.

They will need a 1200 watt psu or sell it with out one .



  Here is a prediction buying these psu's at amazon  will allow for one to be marked up to 400 from 290.

http://www.amazon.com/gp/product/B00JG5LSN8/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1   this psu is basically the same as a corsair ax1200i .

 after reading the thread  i ordered one of these .  I already see these marked way the fuck up