Bitmain will be releasing S15 and T15 on 8/11/2018

[Artemis3]

The last batch if 10 S15's that we acquired was during that little blip when Bitmain was selling them for $1050. Between that and the coupons we had, it paid for the tariff and shipping. The M10 looks like a good machine but @ 65w/TH the efficiency is too low. We're planning to deploy a total of 36 S15 by the end if Jan and run them full power the rest of the winter. That will give us 1PH. Then change them over to LPM starting in May when we start to have cooling challenges. Our mining room should be able to keep up with the heat very well with 36 machines running 850w ea + the Mini's, and we will be mining at a more efficient ratio during the May-Oct when our PoCo increases our electric rates slightly. In order for us to keep our contract rate with the PoCo we have to draw at least 60KVa 24/7, and in July I want to renew that contract for one more year. We subsidize the electric cost for the mining operation so this will make that more manageable and I'm hoping this last equipment upgrade will keep us mining until the halving. Can't really see beyond that, but I don't think there will be anymore new form factors or revolutionary new increases in efficiency in the next 18 months, so this is what we came up with to keep us mining for one more generation of gear. We can support up to 80 S15's on the current rack (we have total capacity of 150KVa), and our power cost goes down the more we use, so if the gear gets cheaper later in the year we can add more capacity if conditions look favorable. We've been mining since the S5's, so this will be the fourth cycle of gear we've gone through.

But the M10 is 16nm while the S15 is 7nm. Don't you think MicroBT will come out with something 7nm in less than 18 months? Bitmain is losing ground IMO.

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[sarcheer]

But the M10 is 16nm while the S15 is 7nm. Don't you think MicroBT will come out with something 7nm in less than 18 months? Bitmain is losing ground IMO.

The case could be made that MicroBT has no experience with 7nm (in terms of produced miners) and may not be as successful with the efficiency advantages they eked out from 16nm, the node size they've been working with for what, 3 years? They also may not have the capital to purchase/manufacture 7nm chips at a scale which will allow for a price competitive product.

[philipma1957]

The real question is does the s15 psu fail a lot at 240+ volts

the m10 so far seems bullet proof.
the s15 does not seem bullet proof.

My new build out with buysolar is the biggest yet.  I could do 40kwatt "free"  plus 50 kwatt "pay"

So  right now we are up to  48kwatt and I want to continue to add more units.

3 to pick from  
S15
T15
M10

If I knew what the 240 volt psu issue really was about I would get s15's.

I don't know yet.

I will say  Apw3++  can run  with zero issues at 243 volt for months  been there done that.

[sarcheer]

What would make me feel way better would be for someone to figure out how to power a T/S15 with an APW5 or something similar. I'm far from an EE and based on what others with more knowledge have said about the efficiency gains all these new machines receive from integrated PSU's, I doubt it would be possible without some serious jerry-rigging.

[HagssFIN]

Bitmain describes the APW8 power supply (which is the psu for S11, T11, S15, T15) as a 16 - 18 V_DC power supply.
I think that this means the controller board is able to control the psu output voltage fed to the hash boards.

[philipma1957]

Bitmain describes the APW8 power supply (which is the psu for S11, T11, S15, T15) as a 16 - 18 V_DC power supply.
I think that this means the controller board is able to control the psu output voltage fed to the hash boards.

then  buying an s11  for  512usd    using a coupon

https://shop.bitmain.com/product/detail?pid=00020190104175252854y6zoVRs606E1

would be a decent way to have a backup  for s15's

1249

https://shop.bitmain.com/product/detail?pid=00020190118193941282ccNL1qbE06A6

just run the s11 at low speed

https://shop.bitmain.com/product/detail?pid=00020190104175252854y6zoVRs606E1
   
 "SHA256   s11
 Reference power efficiency on wall @25°C, J/TH

  Normal ........ ..................Hashrate, TH/s...........Power supply requirement..... Watt / Volt
_________________________20______________1400/220________________70.00 watts a th
Low Power
_______________________16.00~17.50_______1024~1120/220___________64.00 watts a th"

it would be pretty efficient.   cost would be around 600 if you have a coupon

[NotFuzzyWarm]

Bitmain describes the APW8 power supply (which is the psu for S11, T11, S15, T15) as a 16 - 18 V_DC power supply.
I think that this means the controller board is able to control the psu output voltage fed to the hash boards.

That is my thought as well. Doing all regulation in the PSU vs using the normal 2-stages (AC line > PSU 12v > hash boards 7 or whatever volts) certainly kicks up the efficiency. Has anyone looked to see if there is a coms cable going to the s15 PSU?

I would think that the Pangolin and Inno miners should do the same thing.

[HagssFIN]

Has anyone looked to see if there is a coms cable going to the s15 PSU?

Yes there is one.

It's a 4-pin data cable.

You can see it in this Youtube video they have posted at their website.

Link: https://support.bitmain.com/hc/en-us/articles/360014800354-How-to-disassemble-control-board-from-your-Antminer-S15-T15-

[qctechno_isback]

That is my thought as well. Doing all regulation in the PSU vs using the normal 2-stages (AC line > PSU 12v > hash boards 7 or whatever volts) certainly kicks up the efficiency. Has anyone looked to see if there is a coms cable going to the s15 PSU?

I would think that the Pangolin and Inno miners should do the same thing.

I confirm, In kernel log, I can see 16.5 Volts chain calibration also at 18 Volts.
S15 control chain voltage directly from P/S

[minefarmbuy]

Anyone using a VPN able to view bitmain site?

[Artemis3]

Anyone using a VPN able to view bitmain site?

Why do you need a VPN to visit Bitmain's site?

[minefarmbuy]

I've always used VPN for years. Last few days Bitmain site and last couple weeks Innosilicons site wont display. I suppose privacy is becoming more and more a luxury. 

[sikke1]

So my T15 goes up to 20volts.

Code:

2019-01-11 00:09:30 driver-btm-soc.c:4084:open_core_bm1391: Start Open Core!!
2019-01-11 00:09:38 driver-btm-soc.c:4156:open_core_bm1391: End Open Core!!
2019-01-11 00:09:38 freq_tuning.c:291:freq_tuning_get_max_freq: Max freq of tuning is 550
2019-01-11 00:09:38 driver-btm-soc.c:1382:get_eeprom_total_hash_rate: total rate = 23255
2019-01-11 00:09:38 power.c:381:slowly_set_iic_power_to_working_voltage: slowly setting to voltage: 19.30 ...
2019-01-11 00:09:38 power.c:198:get_power_voltage_from_iic_value: iic_index for voltage[24] = 19.887610
2019-01-11 00:09:38 power.c:229:set_iic_power_by_iic_data: now setting voltage to : 20.000000 
2019-01-11 00:09:39 power.c:198:get_power_voltage_from_iic_value: iic_index for voltage[31] = 19.770810
2019-01-11 00:09:39 power.c:229:set_iic_power_by_iic_data: now setting voltage to : 19.887610 

2019-01-11 00:11:45 freq_tuning.c:1779:freq_tuning_pre_test_for_user_mode: Pre-test: done.
2019-01-11 00:11:45 freq_tuning.c:2840:do_pre_test_for_user_mode: Pre-test cost 59s.
2019-01-11 00:11:47 power.c:439:get_chain_voltage: chain[0], voltage is: 15.99 
2019-01-11 00:11:47 power.c:439:get_chain_voltage: chain[1], voltage is: 15.98 
2019-01-11 00:11:48 power.c:439:get_chain_voltage: chain[2], voltage is: 15.98 
2019-01-11 00:11:48 power.c:462:get_average_voltage: average  voltage is: 15.98 
2019-01-11 00:11:48 driver-btm-soc.c:7889:bitmain_soc_init: Init done!


Increase frequency to 500.00M
2019-01-15 00:54:02 driver-btm-soc.c:4917:increase_freq_slowly: 

Increase frequency to 510.00M
2019-01-15 00:54:03 driver-btm-soc.c:5982:set_timeout: freq 510 final timeout=462
2019-01-15 00:54:04 driver-btm-soc.c:8029:re_open_core: re_open_core done!
2019-01-15 00:54:04 power.c:415:slowly_set_iic_power_to_higher_voltage: slowly setting to voltage: 20.00 ...
2019-01-15 00:54:04 power.c:198:get_power_voltage_from_iic_value: iic_index for voltage[17] = 20.004410
2019-01-15 00:54:04 power.c:229:set_iic_power_by_iic_data: now setting voltage to : 20.000000 
2019-01-15 00:54:05 power.c:198:get_power_voltage_from_iic_value: iic_index for voltage[17] = 20.004410
2019-01-15 00:54:05 power.c:229:set_iic_power_by_iic_data: now setting voltage to : 20.004410 
2019-01-15 00:54:06 power.c:198:get_power_voltage_from_iic_value: iic_index for voltage[17] = 20.004410
2019-01-15 00:54:06 power.c:229:set_iic_power_by_iic_data: now setting voltage to : 20.004410 
2019-01-15 00:54:07 power.c:198:get_power_voltage_from_iic_value: iic_index for voltage[17] = 20.004410
2019-01-15 00:54:07 power.c:229:set_iic_power_by_iic_data: now setting voltage to : 20.004410 
2019-01-15 00:54:08 power.c:198:get_power_voltage_from_iic_value: iic_index for voltage[17] = 20.004410
2019-01-15 00:54:08 power.c:229:set_iic_power_by_iic_data: now setting voltage to : 20.004410 
2019-01-15 00:54:09 power.c:198:get_power_voltage_from_iic_value: iic_index for voltage[17] = 20.004410
2019-01-15 00:54:09 power.c:229:set_iic_power_by_iic_data: now setting voltage to : 20.004410 
2019-01-15 00:54:11 power.c:439:get_chain_voltage: chain[0], voltage is: 19.88 
2019-01-15 00:54:11 power.c:439:get_chain_voltage: chain[1], voltage is: 19.87 
2019-01-15 00:54:12 power.c:439:get_chain_voltage: chain[2], voltage is: 19.89 
2019-01-15 00:54:12 power.c:462:get_average_voltage: average  voltage is: 19.88 
2019-01-15 00:54:12 driver-btm-soc.c:3787:check_system_work: low environment handler!
2019-01-15 00:54:12 driver-btm-soc.c:3788:check_system_work: low temperature reopen core and increase voltage 1 times!
2019-01-15 00:59:17 driver-btm-soc.c:1382:get_eeprom_total_hash_rate: total rate = 23255
2019-01-15 01:24:43 driver-btm-soc.c:3700:check_system_work: The avg rate is  23618 in 30 mins, PCB temperature between 9 ~ 40 
2019-01-15 01:55:14 driver-btm-soc.c:3700:check_system_work: The avg rate is  23369 in 30 mins, PCB temperature between 9 ~ 40 
2019-01-15 02:25:45 driver-btm-soc.c:3700:check_system_work: The avg rate is  23367 in 30 mins, PCB temperature between 9 ~ 40 
2019-01-15 02:56:16 driver-btm-soc.c:3700:check_system_work: The avg rate is  23249 in 30 mins, PCB temperature between 9 ~ 40 

Doing well with -20c outside and -10c unheated storage. PCB Temp 10c

[Artemis3]

If you don't change pools 1 and 2, you will be giving money to Bitmain from time to time...

[sikke1]

If you don't change pools 1 and 2, you will be giving money to Bitmain from time to time...

I know this and kinda left it there in the screenshot to be teaser, it rarely drops to backup pool as the screenshot shows I have mined successfully without dropping to giving charity to Bitmain. For month now. It is intentional laziness I'm rebel lol or stupid.

[minefarmbuy]

Looks like a price drop here. Coupons are still usable. If anyone here runs an order I'll give you my 2 $65 just send me your order number through us.

[philipma1957]

Looks like a price drop here. Coupons are still usable. If anyone here runs an order I'll give you my 2 $65 just send me your order number through us.

the s15 is still too high at 1020 is going to get taxed if shipped to usa.

so I am looking at  what price if I order one from you?

the website reads  1650 solo with custom support.

does this reflect the drop to 1020? pre tax pre shipping

and the 65 dollar coupon

I am guessing no.

[HagssFIN]

I now have the S15 running,
and as guessed, it is a noisy beast..!
Mostly because of the psu fans.

I'll write more about it later on,
but here is a quick video for noise reference.
Video: https://mega.nz/#!U1FkXIRS!Nb_xEO8yTeAvmYCwLdrwiE1xSCCnkD4ue2t32QNA12s

[philipma1957]

I now have the S15 running,
and as guessed, it is a noisy beast..!
Mostly because of the psu fans.

I'll write more about it later on,
but here is a quick video for noise reference.
Video: https://mega.nz/#!U1FkXIRS!Nb_xEO8yTeAvmYCwLdrwiE1xSCCnkD4ue2t32QNA12s

that is a nasty pitch

 I would hate to have 30 of them running

[minefarmbuy]

the s15 is still too high at 1020 is going to get taxed if shipped to usa.

so I am looking at  what price if I order one from you?

the website reads  1650 solo with custom support.

does this reflect the drop to 1020? pre tax pre shipping

and the 65 dollar coupon

I am guessing no.

It's all projection with our model. Most to all clients get a return of surplus funds or we eat the cost from our commission.

I just have to get the order number to and give them the coupon to apply and then it's detailed out on the final invoice.