Antminer Z9 mini overclocked

[htautosjay]

Mini support is now available in the Z Series firmware. Please see my other thread for details.

Thanks!

Jason

Hi I have missed this thread for a few months.. did i read the above right,,, can we get 16 sols from a batch 2 z9 mini ?
Thanks

[efudd]

Mini support is now available in the Z Series firmware. Please see my other thread for details.

Thanks!

Jason

Hi I have missed this thread for a few months.. did i read the above right,,, can we get 16 sols from a batch 2 z9 mini ?
Thanks

htautosjay - it will vary to be honest. With the per-hashboard feature, I've been able to get +5% out of batch2s. That isn't 16k on most, but is an additional 5% from baseline. Tuning takes some work though. Dev fees are disabled until 12/1, so you are welcome to try it on a mini and see.

To tune:

1) Set global frequency to 650. Set each other frequency to "Use Global".
2) Observe your boards for at least 10 minutes, if any drop out, on the next cycle decrease their frequency by 1 step in the pulldown.
3) Repeat this cycle until you have a stable minimum frequency for your boards.
4) To start the 'upwards tuning', choose one board (#1 for example) and increase it's frequency by 1 step.
5) Observe the board for at least 10 minutes to see if it is stable. If it is, repeat #4. If it is not, drop down 1 step and move to the next board.

Going through this process (which hopefully makes sense), you should be able to tune your units for your individual system maximums. It's best to do this with the fans set to 100% so you can remove thermals from the equation -- after which, set the fans back however you want them and see if your boards stay stable. If they do, good, of they don't, eithee decrease freqeuncy by 1 step or increase fan.

Good luck!

Jason

[htautosjay]

Mini support is now available in the Z Series firmware. Please see my other thread for details.

Thanks!

Jason

Hi I have missed this thread for a few months.. did i read the above right,,, can we get 16 sols from a batch 2 z9 mini ?
Thanks

htautosjay - it will vary to be honest. With the per-hashboard feature, I've been able to get +5% out of batch2s. That isn't 16k on most, but is an additional 5% from baseline. Tuning takes some work though. Dev fees are disabled until 12/1, so you are welcome to try it on a mini and see.

To tune:

1) Set global frequency to 650. Set each other frequency to "Use Global".
2) Observe your boards for at least 10 minutes, if any drop out, on the next cycle decrease their frequency by 1 step in the pulldown.
3) Repeat this cycle until you have a stable minimum frequency for your boards.
4) To start the 'upwards tuning', choose one board (#1 for example) and increase it's frequency by 1 step.
5) Observe the board for at least 10 minutes to see if it is stable. If it is, repeat #4. If it is not, drop down 1 step and move to the next board.

Going through this process (which hopefully makes sense), you should be able to tune your units for your individual system maximums. It's best to do this with the fans set to 100% so you can remove thermals from the equation -- after which, set the fans back however you want them and see if your boards stay stable. If they do, good, of they don't, eithee decrease freqeuncy by 1 step or increase fan.

Good luck!

Jason

Thank you for your reply, i have a bunch of batch 2's running between and 13.3 and 14 sols.. i will have a look at what you suggest.. thanks again

[ilmaz]

hi dear every one know about overclockable frimware for z9mini batch4?
also batch4 overclockable or no?

[ilmaz]

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

hi imine thank for information about overclock batch4
we,upload your sharing frimware for z9mini batch 4
after upload in advanced setting we can change fec and about some fec we can get about 15 ksol but after 20min for every fec after everything dead cheaps temp and pools
please help me if you can

thanks alot

[Canadian Sensei]

Guys,
I'm setting up my first z9 mini, batch1.  It won't seem to overclock past 706M.  Once I get higher than that the ksol start to decrease.  example: 750M = ~8ksol.  Any idea why that could be?  Any help would be greatly appreciated.
Thanks

[astraleureka]

Not all chips can handle an overclock, that's why they ship with their default frequency. The chips are rated to work at their factory frequency only.

[efudd]

Guys,
I'm setting up my first z9 mini, batch1.  It won't seem to overclock past 706M.  Once I get higher than that the ksol start to decrease.  example: 750M = ~8ksol.  Any idea why that could be?  Any help would be greatly appreciated.
Thanks

Don't focus so much on the frequency, rather look at the hash rate and adjust to the best ability there. If you have a single board that is slowing the system down, you can try my firmware (https://releases.broked.net) which will let you clock each board separately.... and "soon" the dev-fee will be 0% if you mine on a supported pool (to be announced).

-j

[tux1975]

hello oc's
exists a firmware with a adjustable fan curve? I have rebuilt my z9mini on water cooling and would like to adjust the fan speed.

The temperature is good and I want more silence now

regards Jens

[efudd]

hello oc's
exists a firmware with a adjustable fan curve? I have rebuilt my z9mini on water cooling and would like to adjust the fan speed.

The temperature is good and I want more silence now

regards Jens

No, unfortunately not.

-j

[tux1975]

No, not without hardware modifications ...
the power stage does not deliver enough  these 3 hashboards work stable up to 681 MHz after that the hashrate Drops

Jens

[lceman11]

almost every antminer (even older models) has one additional connection. I thought the same but no one did it before. I doubt that bitmain will send you a new board (solo) for 200 usd.

Im sure they will since another user on this forum got one sent to him after he burned out a board, my question is will it work ? Im hoping some one with 2 units can set one up and test it, if it works i will hit up bitmain and say i fried one of my boards due to overclocking and i can order a replacement just like the other user.

the post is some where in this thread
https://bitcointalk.org/index.php?topic=3509006.0

It will work but you need to adjust firmware so it initiates the 4th board or the 4th chane (for z9 mini). But what I've done is simply loaded firm from big z9 onto mini with 4 boards - z9 big one has  2 chains per board so it will load what you need - works like a charm at 681 I get stable 24K. I will be immersing them in a little bit   one thing though it shows stupid temps like 1C or 7c but as long as you keep fan at 75% or above or in my case immerse them you should be ok

[goxi87]

Does anyone have firmware for z9 mini batch 2?

[efudd]

Does anyone have firmware for z9 mini batch 2?

Responded on Discord....

[Longsnowsm]

Is it possible to undervolt the z9 mini's?  I have a couple of batch 1's that it would be nice to know if it is possible to reduce the power draw on these little miners and hold the same hash rate.  Thanks.

[efudd]

Is it possible to undervolt the z9 mini's?  I have a couple of batch 1's that it would be nice to know if it is possible to reduce the power draw on these little miners and hold the same hash rate.  Thanks.

Not at this point in time.

[Cool_Lamer]

New firmware released Antminer-Z9-Mini-fixed-500M-201905171644. Are there any changes in the hashrate plan?

[efudd]

For that one, no.

[Goodvalony]

i have never trusted Antminer mining devices because alot of people in my country has been scammed of their hard earn bitcoin with this device. people were ask to contribute and they will earn from a pool mining. it looks like it working

[SilverDesert]

Guys,
I updated to the new antminer z9 mini firmware from Bitmain's site. Now I am stuck with Antminer-Z9-Mini-fixed-500M-201905171644.tar.gz.
If I try any file it says the file is not signed. I cannot even SSH to the miner like before.
Any help?