Topic: Antminer Z9 mini overclocked - page 8. (Read 26121 times)

Does anybody know a method how to raise / change the voltage for the ASIC chips?
I would like a software solution, not a hard (physical) mod. (as we have at the S9 for example)
thanks

THIS is how:

" ... SSH into machine and changing the file "/config/cgminer.conf" or from Chrome using "Inspection" for the field where you choose "frequence" (May 26 version) alt. "mode" (Aug 12 version) on page "Miner configuration - Advanced settings" ... "

I use the program "Putty.exe" on windows 10 machine to SSH into my z9 mini.

Step:
0. Start Putty.exe and input ip-adress for machine to SSH into. (For my z9 mini in my home network ip = 10.0.1.101)
1. Press "Enter"-button
2. First time putty.exe SSH into a machine it ask's you to approve that machines ssh_host-key
3. Press "Yes-button" on pop-up window and now the terminal window opens where you type in your commands
4. root
5. Press "Enter"-button
6. root    (if factory default or use the password you've changed to when login in to your z9 mini)
7. Press "Enter"-button
8. cd /config
9. Press "Enter"-button
10. vi cgminer.conf  (file cgminer.conf opened up in the "vi"-editor)(BE CAREFUL - google vi editor and learn howto use it)
11. Press "Enter"-button
12. use "arrow"-keys and move down to "bitmain-freq": "500"
13. Press "i"-button (this is for insert-mode) (be VERY careful NOT to change/delete/add anything else but...)
14. change "500" to "768"
15. Press "Esc"-button (but ONLY once)
16. :wq!
17. Press "Enter"-button
18. cat cgminer.conf
19. Press "Enter"-button
20. Now you see the text in cgminer.conf and can verify that you have changed to "768" and nothing else has changed.
21. /etc/init.d/cgminer.sh restart
22. Press "Enter"-button
23. Now your z9 mini reboots and voila !

This will ONLY work if that specific z9 mini machine can handle 768 MHz !!!

My specific z9 mini will NOT run solid on 775 MHz or above.

IF I go above 768:
At 775 it starts up all three chains without errors but after 5-15 minutes or so I will see "KSol/S(RT)"-value going down slowly and continue down and I will go into page "Miner configuration - Advanced settings" and choose 750 and then press "Save&Apply"-button at bottom right corner.

z9 mini restarts at 750 MHz

(Going to high and it will not even start up all three chains !)


Now I go thrue step 0-23 and again set it to 768 MHz.

I've done this a few times and now tested and know that MY specific z9 mini can handle 768 MHz but nothing above that.
Now I just let it run and run and run at 768 MHz.

Only time I restart is if I change mining pool or try any different settings at some miningpool and if thunder and lightning outside I will unplugg my z9 mini PSU from the 240V connector in my wall.

BUT it's easier to use Chrome to change the value to 768 or whtever

(There are youtube video and other poeple on this forum that already explains how that is done!)

ok cool il give it another looking at
Thank you

https://bitcointalksearch.org/topic/can-asics-kills-power-supplies-1739630


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

It's the same with PSU's.

I see that I made a mistake under "Password" regarding "n="

You choose some name and / or number that makes it easy for you to identify like:
z9mini001
z9mini002

or whatever suits you!!!


Login to your z9 mini's number 1 - 3:
Goto Page "Miner Configuration - General Settings"

z9mini number 1
Pool 1:
URL: stratum+tcp://prohashing.com:3336
Worker: your_login_name_at_prohashing.com
Password: n=z9mini001

z9mini number 2
Pool 1:
URL: stratum+tcp://prohashing.com:3336
Worker: your_login_name_at_prohashing.com
Password: n=z9mini002

z9mini number 3
Pool 1:
URL: stratum+tcp://prohashing.com:3336
Worker: your_login_name_at_prohashing.com
Password: n=z9mini003

and so on ...


Best of luck!!!

Mate, how do i set up workers?...i linked my coinbase acc and payout proportions in BTC.. filled in the UK resident form.. bit lost now.. whats all this arguments stuff lol Thanks

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.

Thank you for your very detailed reply.. I am going to try to get my head around all of that... Let me re read it over again and ill have a bash at setting up an account. Thanks again 

If you point to
Url : stratum+tcp://prohashing.com:3336
it WILL be autoswitch.

If you only want to mine a single coin you will need to have something like this:
password : c=zcash n=You_choose_some_name_and_or_number_that_makes_it_easy_for_you_to_identify
This is if you wan't to hash only one coin and in this example it was Zcash.

Letting all your machines mine one and same single coin (not solo mining) WITHOUT converting will give lower fee AND share rewards you don't get in my case.

I convert to BTC and LTC.
Because I get immidiate conversion on prohashing and can choose have many % of each like 80% BTC and 20% LTC conversion I wan't I do not risk loosing as much because of the loong unknown time it takes for MPH to do the autoexchange since BTC can move alot in that time.


Furthermore on MPH the multialgo on port 17023 is not in sync whith Whattomine.com and also seems to move big hashing-power between the different algorithm's in a way that I beleive influense the other algorithms negatively.


As I understand it, on prohashing.com I can be rewarded for parts of work my machine done (read "Help" on their site) even when "too late" and I seem to get better "2hr avarage solrate" hashingspeed for my z9mini and for other friends they have been getting ridiculus speeds on their Innosilicon A9 ZMaster's when loggin in to them as well as on prohashing "2hr avarage solrate" hashingspeed both in "balance" and "performance"-mode with different firmwares AND the problem they had with there A9's whatever firmware with restarting because memory full seems to be gone. Their logs dont't get clogged up with as much as with MPH, nanopool and flypool and others. Before they had to restore to factory defaults between 1-2 weeks apart just to keep them spinning for more than something like 8 hours before their A9's would restart. After facory restore they could get 1-1.5 days and for every restart it would get worse.


Seems like prohashing.com calculates each and every machines hashingpower and timedelays and manage to choose which work/coin/difficulty to give to each machine with better earnings as a result.

My z9mini has also shown quite a few impressive 2hr delta hashing speed up towards 20ksol/s.
But hashing speed goes up and down.


I have also "found block":
Algorith     Coin        blockrewards   fee            difficulty         value       status
Equihash   Komodocoin   3   0.001356   1,443,172,861   $2.9901   Mature


I just say that give prohashing.com a day or soo if you feel that you are not satisfied with the miningpool(s) you are using now!


(And I live in Europe so I do NOT have anything to do in any way with prohashing other then being a little bit more satisfied and hopeful with my limited earnings.)

If someone else tries prohashing.com I hope they will give their oppinion whatever it is !!!

Do you earn more on Prohashing then Mining Pool Hub?... I have been wondering where the best place is to point my Z9's ..
Will Prohashing mine on Autoswitch?. BTCP, HUSH , XEC, ZCL, Ect and payout in BTC?
Thanks

About firmware versions and overclocking:


I've been doing some serious digging!!!


When you login to your Z9 mini you check on first page "System - Overview"
Batch 1, 2 and 3 all seem to have
"Hardware Version:" = 9.0.0.5

"File System Version:" tells you which firmware version your Z9 mini is running on.

There are at LEAST four (4) different firmware versions for z9 mini:

1. Sat May 26 20:42:30 CST 2018 = Antminer-Z9-Mini-201805262047-500M.tar.gz
2. Sun Aug 12 17:43:41 CST 2018 = ? ? ?
3. Thu Aug 30 14:57:48 CST 2018 = ? ? ?
4. Fri Aug 31 17:02:59 CST 2018 = Antminer-Z9-Mini-NAND-500M-201808311812.tar.gz (the now only downloadable fw on Bitmains site for z9 mini.)


May 26 and Aug 12 firmware-versions are overclockable either from SSH into machine and changing the file "/config/cgminer.conf" or from Chrome using "Inspection" for the field where you choose "frequence" (May 26 version) alt. "mode" (Aug 12 version) on page "Miner configuration - Advanced settings" and for the May 26 version ofcourse you just choose the frequence here you wan't just like God intended !


Aug 30 and Aug 31 versions just ignores any frequence value from cgminer.conf or with Chrome's "Inspection" method.
If you go to the "/www/pages/cgi-bin/minerAdvanced.cgi"-file and changes value and saving (after you already made the filesystem writable). After reboot it will have changed the file back!!!


Batch 1 seem to be very overclockable !!!
I, myself, are running my single batch 1 Z9 mini on 768 MHz and it's solid !!!


For Batch 2/3 I have seen quite a few running them on 668 MHz solid with both fw May 26(after upgrade) and Aug 12 firmware's !!!


WHEN you install(upgrade) the May 26 firmware using the page "System - Upgrade" I strongly recommend you UNcheck "Keep settings:" to get as clean install and as little problems as possible.


I really recommend you checkout mining at prohashing.com dispite their "high fee" (not high in relation to what I earn compared to MPH, nanopool and flypool after 48 hours, at least for me and my friends.) Read under "Help" on prohashing.com for further info and earning possibilities if you choose a single coin to hash.)


Howto - Pool settings for prohashing.com: (here you can see mine)
Url : stratum+tcp://prohashing.com:3336
(3336 is for Equihash algorithm that z9 mini calculates)
Worker : imine2
(imine2 is the username I choose to register with at prohashing.com)
Password : n=z9mini101
(I choose the name z9mini101 where the "101" stands for machines ip:10.0.1.101 in my home network and it's just a name to identify your machine for yourself and prohashing.com. Important for them and you if you have more than one machine being able to distinguish each machine.)


May 26 firmware:
File: Antminer-Z9-Mini-201805262047-500M.tar.gz
sha-1: 8791eee569dfff728c8363e5d8fd93f68957a2ee
https://ufile.io/cwnf6 (New link - Uploaded 10 october 2018)
(This link goes to the May 26 firmware which I've shared at Uploadfiles.io and THIS LINK should work for 30 days from october 10, 2018!)


Donations - I hope all my hard work will help up your earnings:

Bitcoin (BTC): 1HY5ZvPvx3fx5iA5cQKjw9ZuArse2STuCb
Litecoin (LTC): LZPmxZdoe8ZNL8av5CkPPBEEBJVdoFQbS6
Zcash (ZEC): t1d35jvkzKcWybpCqojZmgDZkcFC7iBwe8w
Monero (XMR): 48gVGMbZsAD5xtbpEpBKTJiDz6uMrnkTxjMcJGGFtore7i7wckSqmvYKfPVGQGab6U9kK76nGa91fhL SDvPfK4bYKkJaXeW

never mind, found the may firmware upstairs, works fine so far

Can somebody explain to a total noob how to do this? I just got my batch 3 and no option for overclocking, how do I flash older firmware?

Yes

Ezeiza,
Did you flash May's firmware on your batch 3's?

Are you talking about batch 2 or batch 3, because my batch 3 is working stable on 725 for more than 24hour hashing avg. 15.8 kh/s

Another thought I had is that the hashboards could be self throttling if the temps are too high at 750. Otherwise I could be wrong, i'll experiment with 700 for a day or so & then report back if I remember.

Actually he is correct. Every batch 2 i have played with either has a reduced hashrate or none at all when running at 750. Personally I cant push mine past 675 without dropping boards.

This is not correct. You need to be looking at the average hashrate taken over a long period of time, I assume you are either looking at the current hashrate (it fluctuates quite a bit) or not giving enough time to calculate an accurate average.
my average at 750 is 16.95 Ksols/s over the past 24 hours. Sometimes into the 17s