Antminer Z9 mini overclocked

[omars2010]

Could you pls help me to figure out how to solve the problem on board no.2 ?
I have x on board 2, however, if i decreased the frequency the x will be removed.
https://i.postimg.cc/HWSGkKS8/20180918_224555.jpg
https://postimg.cc/xqbpssV9

"Decrease frequency" is the only solution as of now.

Does board no 2 get enough power ? ? ?

Switch powerconnector with board 1 or 3 and see if problem moves to other board or goes away ? ? ?

If not, then decrease frequecy is only solution as of now!!!

I have tried to switch the power connector, but the problem still there.
Only decreasing the frequency, which cause losing hashrate, was the only solution i found.

[Kalyst69]

You are right bro. Time is coming!
I've been stupid to buy chinese again. But I vow that I will not be anymore prey of the communist Chinese.
They are and will be always my first enemy. I hate the communism capitalist of these people not able to create added value. Thinks about the salary of people that is building asics in factories. They are trying to build a new Roman Era with their modern slaves. But pay attention Chinese, in the Roman Empire we have built streets, aqueducts and a big army ready to fight anyone. Not to build obsolete miners. Also the Moore's Law, do you remember the famous 18 months in ICT? Well, with these new miners this law has been destroyed.
Pay attention chinese, or the Old Empire will destroy you.

Tell me what you smoke, I want to buy the same

[Rakly3]

Unlocked my Batch 3 about 10 days ago.
Running steady at 700Mhz
Depending on the pool difficulty it ranges between 14.5k (high diff) and 17k (low diff)
Ran at 750Mhz for a full day, but the speed was noticeably lower (12-13ksol/s)

http://i65.tinypic.com/23ubgo1.jpg

[sqnkee]

Unlocked my Batch 3 about 10 days ago.
Running steady at 700Mhz
Depending on the pool difficulty it ranges between 14.5k (high diff) and 17k (low diff)
Ran at 750Mhz for a full day, but the speed was noticeably lower (12-13ksol/s)

http://i65.tinypic.com/23ubgo1.jpg

How did you OC Batch 3???

[Rakly3]

Unlocked my Batch 3 about 10 days ago.
Running steady at 700Mhz
Depending on the pool difficulty it ranges between 14.5k (high diff) and 17k (low diff)
Ran at 750Mhz for a full day, but the speed was noticeably lower (12-13ksol/s)

http://i65.tinypic.com/23ubgo1.jpg

How did you OC Batch 3???

https://bitcointalk.org/index.php?topic=4610213.msg45735658#msg45735658

[ZergeZ]

Is anybody know what type of chip is near 16f1704 on hashboard z9m? It is mark as FENZ. 8pin soic. I know that it is something like EEPROM
 or NVRAM memory, but cann’t find it type.

[imine2]

FYI: with those 2x Z9 from batch2, i§m not able to go over 600MHz, when i overclock more, they runs just about 1.5 KSol.,.. Asic status is oooo for al boards
Doesnt matter if i set 610, 630, 650 or more, looks the same

Something as:
Chain#   ASIC#   Frequency   KSol/S(RT)   HW   Temp(PCB)   Temp(Chip)   ASIC status
1   4   666   1.62   0   33   41   oooo
2   4   666   1.27   0   33   41   oooo
3   4   666   1.39   0   35   44   oooo

Compared to 600 MHz:
Chain#   ASIC#   Frequency   KSol/S(RT)   HW   Temp(PCB)   Temp(Chip)   ASIC status
1   4   600   4.30   0   50   64   oooo
2   4   600   4.09   0   46   60   oooo
3   4   600   4.62   0   49   61   oooo

try 668 MHz instead of 666.

in may 26 firmware the stepping is as follow for ,... ,500, 600, 700 up to 750 MHz:
06
12
18
25
31
37
43
50
56
62
68
75
81
87
93
00

I guess Bitmain might have some reason for chosing that particular stepping.

good luck and please give feedback to us all !

[imine2]

Is it dangerous to connect multiple ASICs from one PSU?  

it's the other way around. it is dangerous to connect multiple PSUs to a single ASIC.  you can connect as many asics you want to a PSU as long as both your PSU and the 6pin connected can handle the power needed. from a theoretical point of view you can have 4 z9 minis connected to 1 APW 1600w psu ( each z9 mini takes about 350w if not overclocked" ). how ever i would not do that until i verify that the 6 pin connectors which are going to be split can actually handle the load.

https://bitcointalk.org/index.php?topic=1739630.0


You don't want to run your engine on max RPM to loong.

It's the same with PSU's.

this is completely based on your own or someone else's speculations and it has no solid proof what so ever, the max you see on the label is the safe point which a good psu should handle all day long. I have been pulling about 970w of  a 1000w psus on my rigs for years and zero problems, it all comes down to the room ventilation and the quality of your PSU. bitmain psu is a solid psu. i have some A3 and S9s slightly over clocked consuming close to 1500 for ages and never a problem with the PSU. you can test it out yourself if you like.  

Yep, agreed. I haven't had any problems with my Z9 running at max settings. Bitmain left lots of room for tuning in these things.

in the link I gave this one is on page 2:
https://bitcointalk.org/index.php?topic=1739630.msg17440217#msg17440217

And this one:
https://bitcointalk.org/index.php?topic=1739630.msg17440489#msg17440489

You guys are correct!!!
The Label doesn't give the full answer !!!

For all the people who read your answer's they might not know as much as you guys.

Do they have 120V or 240V?
50Hz or 60Hz ?
Does it matter ?

Do you RECOMMEND that everyone push their PSU's to the limit according to the label on their PSU's whatever brand, age (manufacturing year), earlier usages if not new from the store, voltage, ...

If not, WHY ?

Everything will always go well until it goes wrong !!!

you don't have to push your PSU to the limit if you don't have to . also you do not want a lot of spare power sitting there doing nothing when you have to buy another psu ! . if there is a room on your psu which you can use then just use it.

I don't have a 120v circuit i think only people in the U.S and a few other countries have that old power infrastructure. i don't know how much exactly in WATS you would be able to pull from APW psu but i am sure it is not 1600w. i think 1200w is the BEST you could wish for but then dyor regarding that matter.

assuming you can get a 1200w of it, then it's safe to say that you can consume 1200w from it , all year long .


 

** so this is what bitmain has on thier page

APW3++

The APW3++ can deliver a maximum power of only 1200W if it is connected to a 110V mains power supply. To obtain the rated power of 1600W, the APW3++ must be connected to a 220-240V

APW7

The APW7 can deliver a maximum power of only 1000W if it is connected to a 110V mains power supply. To obtain the rated power of 1800W, the APW7 must be connected to a 220-240V


so if you are using 110 vs then you should get the APW3++ which give you 1200w . if you are using 220v then you should get APW7 as it gives you 1800w instead of 1600w.

Follow up - my own Real Life example:
I've been running my single z9 mini for about 2,5 months on this PSU.

My PSU was bought new and SHOULD deliver "Max power" 648W and "Max load" 54A on +12V according to label.
I've been running solid 768MHz overclocked using may 26 firmware and by SSH'ing up'ed to 768MHz.

Antminer Z9 mini label says max 35A
(I guess max 35A equal each ASIC-board is about max 10A @12V and controllerboard about max 5A @12V including fan)

The actual total power drawn meassured from wall socket was about 418W @ about 234V @ 50Hz

418W / 12V = 34,83A

(UPDATE:
I forgot to compensate for the PSU's own heat disipation which I approximate to be about 80-90% efficency when powerusage drawn from wall socket is 418W.
So..       (85%)
34,83A * 0.85 = 29,66A * 12V = 356W is somewhere close to what the z9 mini consumes in power (NOT exactly) )

Problem:
Apperently the PSU was NOT able to continously(year after year) deliver "only" about 35A on +12V which isn't  anything close to 54A according to label. If cable/connector melts after about 2,5 months it's not built to deliver continously power according to label ! ! !

My Z9 mini been running inside my home with ambient temp around 24-27 degree Celsius and humidity between 35-60% according to sensor built into firealarm coupled to housealarm system during this hole period.

PSU label:
https://imagebin.ca/v/4HFBVBvgQYCR


On the left the cable/connector in PSU for board 2 and 3 which has melted on 3 pins. On the right the connection still in it's port for board 1 + controlboard and still working.
https://imagebin.ca/v/4HFBzmxy2xyt


Something to consider !

[party143]

z9 mini  batch 3. April firmvare. |Not working PWM, just 6000 all the time. Changing value in menu doesnt affect anyhow
https://clip2net.com/s/3WZMICb
https://clip2net.com/s/3WZMLg3

[imine2]

z9 mini  batch 3. April firmvare. |Not working PWM, just 6000 all the time. Changing value in menu doesnt affect anyhow
https://clip2net.com/s/3WZMICb
https://clip2net.com/s/3WZMLg3

Firmware for batch 1 should be may 26 2018 ! ! !
NOT april !!!


https://bitcointalk.org/index.php?topic=4610213.msg45735658#msg45735658


Try restore to factory defaults !!!
Go to System - Upgrade
Under "Backup / Restore"
Choose "Reset to defaults"

Try upgrade with firmware in link above !!!

[party143]

z9 mini  batch 3. April firmvare. |Not working PWM, just 6000 all the time. Changing value in menu doesnt affect anyhow
https://clip2net.com/s/3WZMICb
https://clip2net.com/s/3WZMLg3

Firmware for batch 1 should be may 26 2018 ! ! !
NOT april !!!


https://bitcointalk.org/index.php?topic=4610213.msg45735658#msg45735658


Try restore to factory defaults !!!
Go to System - Upgrade
Under "Backup / Restore"
Choose "Reset to defaults"

Try upgrade with firmware in link above !!!

i tried to say that changin value of fan speed doesnt affect. Its always 100%, not depended on firmware.

[imine2]

z9 mini  batch 3. April firmvare. |Not working PWM, just 6000 all the time. Changing value in menu doesnt affect anyhow
https://clip2net.com/s/3WZMICb
https://clip2net.com/s/3WZMLg3

Firmware for batch 1 should be may 26 2018 ! ! !
NOT april !!!


https://bitcointalk.org/index.php?topic=4610213.msg45735658#msg45735658


Try restore to factory defaults !!!
Go to System - Upgrade
Under "Backup / Restore"
Choose "Reset to defaults"

Try upgrade with firmware in link above !!!

i tried to say that changin value of fan speed doesnt affect. Its always 100%, not depended on firmware.

It might be one of the four cables to the fan that don't have contact with the controllerboards contact.
It's missing the speed impulse or something !!!

Good luck!

Please share your findings, results and solution with us to help others!

[fliperone]

It seems that communications on Z9 is done through PIC16F1704, same as for L3+
https://bitcointalk.org/index.php?topic=4534369.0

Did anyone try to change voltages similar to this ?

Code:

./set_voltage 1 90

all details here
https://bitcointalk.org/index.php?topic=3546316.0

Hey FrozenChip. I tried to use the tool that jstefanop developed for the L3+ but it wont work. It gives the error: "Failed to open the bus"

I guess its not the same chip/FW version? I can try to ask jstefanop in his thread but I cant send him a message since Im a noob

Any help appreciated!

[DR_BamBam]

Which firmware works best with the batch 2?

[imine2]

Which firmware works best with the batch 2?

https://bitcointalk.org/index.php?topic=4610213.msg45735658#msg45735658

they are probably quite equal when it comes to stability

if you want to overclock ?

you need firmware thats before aug 30 2018.

[ZergeZ]

It seems that communications on Z9 is done through PIC16F1704, same as for L3+
https://bitcointalk.org/index.php?topic=4534369.0
Did anyone try to change voltages similar to this ?

Code:

./set_voltage 1 90

https://bitcointalk.org/index.php?topic=3546316.0

Don't work!

[DepositBox]

you can use Awesome miner to Overclock the batches that do not have it built in.

[efudd]

you can use Awesome miner to Overclock the batches that do not have it built in.

Only if the firmware supports it -- all awesomeminer does in this scenario is configure /config/cgminer.conf. This works best, as far as I am aware, with batch1 firmware installed.

-j

[DepositBox]

I am certain I do not have the batch 1 and I am at 650, I was unable to use the firmware to change frequency so I used awesome miner.

[efudd]

I am certain I do not have the batch 1 and I am at 650, I was unable to use the firmware to change frequency so I used awesome miner.

Translation, and please feel free to correct me: You were unable to change frequency via the web interface, so you used awesome miner to change the frequency for you. Behind the scenes, awesomeminer modifies /config/cgminer.conf to set the frequency and restarts cgminer to make that frequency take effect.

I didn't say "only on batch1 hardware", I said "batch1 firmware".

anyway.

-j