Antminer Z9 mini overclocked

[oomurashin]

The most I can get out of my two Batch 2 machines is 687 (although 681 produces a higher hashrate) and 625. Anything over that and the third hashboard on both machines goes to 0 hashrate.

i just recived my 2nd batch. mine too. 3rd chain die at 681 or up.

What hash rate are you getting at 681 or close. Do you get hw errors on any chains or does it just hash at 0 when you go at or over 681

nothing else HW. quiet die chain3. im running 662 now. got about 14Khs

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[htautosjay]

The most I can get out of my two Batch 2 machines is 687 (although 681 produces a higher hashrate) and 625. Anything over that and the third hashboard on both machines goes to 0 hashrate.

i just recived my 2nd batch. mine too. 3rd chain die at 681 or up.

What hash rate are you getting at 681 or close. Do you get hw errors on any chains or does it just hash at 0 when you go at or over 681

   
same here... what about flashing the may 2018 firmware on to it?.... my batch 1 runs fine at 750..17 sols batch 2 one board dies above 675 freq.. 14 sols...

[efudd]

The most I can get out of my two Batch 2 machines is 687 (although 681 produces a higher hashrate) and 625. Anything over that and the third hashboard on both machines goes to 0 hashrate.

i just recived my 2nd batch. mine too. 3rd chain die at 681 or up.

What hash rate are you getting at 681 or close. Do you get hw errors on any chains or does it just hash at 0 when you go at or over 681

   
same here... what about flashing the may 2018 firmware on to it?.... my batch 1 runs fine at 750..17 sols batch 2 one board dies above 675 freq.. 14 sols...

I'm wondering if bitmain hasn't cherry picked hashboards for the Z9s over the minis in this batch?
In theory I'll have a Z9 next week to see how (if?) it overclocks.

I wouldn't imagine their yield suddenly going down across the board on OC stability.

[Tailgunner]

My 2 latest z9s will not do 750. faults

I have the batch one at 756 and it's getting 16.4 ksol.

How did you get up to 756? my batch 1 only lists a maximum of 750.

[Tailgunner]

The most I can get out of my two Batch 2 machines is 687 (although 681 produces a higher hashrate) and 625. Anything over that and the third hashboard on both machines goes to 0 hashrate.

i just recived my 2nd batch. mine too. 3rd chain die at 681 or up.

What hash rate are you getting at 681 or close. Do you get hw errors on any chains or does it just hash at 0 when you go at or over 681

   
same here... what about flashing the may 2018 firmware on to it?.... my batch 1 runs fine at 750..17 sols batch 2 one board dies above 675 freq.. 14 sols...

I'm wondering if bitmain hasn't cherry picked hashboards for the Z9s over the minis in this batch?
In theory I'll have a Z9 next week to see how (if?) it overclocks.

I wouldn't imagine their yield suddenly going down across the board on OC stability.

This makes sense. I'm at least 95% sure that the Z9 is just 2 minis combined with a much higher stock clock frequency. Classic silicon binning.

[not.you]

My 2 latest z9s will not do 750. faults

I have the batch one at 756 and it's getting 16.4 ksol.

How did you get up to 756? my batch 1 only lists a maximum of 750.

Just edit the cgminer.conf file and set whatever freq you want.  I tried higher but had to lower it since the higher values either weren't stable or produced a lower hashrate.  Eventually I settled on 756 as the sweet spot for this unit.

As others have said about their batch 2 miners, the third board on my batch 2 miner just doesn't handle OC very well.  The other two boards seem to do fine with the higher numbers but that third one either doesn't hash at all or does so very poorly.  I have to limit the OC on the whole thing to accommodate that board.

[Zed273]

As others have said about their batch 2 miners, the third board on my batch 2 miner just doesn't handle OC very well.  The other two boards seem to do fine with the higher numbers but that third one either doesn't hash at all or does so very poorly.  I have to limit the OC on the whole thing to accommodate that board.

Same for me.  Batch 1 has been going strong at 750 for a month but the third board on my Batch 2 won't let me get to 700.  Currently running at 687 for the time being.  It took a few hours for the third board to crap out at 700 so I'm still not sure 687 is going to hold.

[0ethereum0]

I get my z9 mini in a couple of days. I only have not the orginal Bitmain psu. Do I really need the psu of Bitmain or can I use my 1000 watt quit psu (6+8 pins) ?

https://bitcointalk.org/index.php?topic=4404847.0;topicseen
Pick this thread up buddy we have been talking on this thread for 2 months now about pools and clocking the z9 mini

Yeah I read the whole topic (30 page's a lott of pages) but I saw never if I could mine with a other PSU then the orginal
Has anybody the answer ?

[not.you]

I get my z9 mini in a couple of days. I only have not the orginal Bitmain psu. Do I really need the psu of Bitmain or can I use my 1000 watt quit psu (6+8 pins) ?

https://bitcointalk.org/index.php?topic=4404847.0;topicseen
Pick this thread up buddy we have been talking on this thread for 2 months now about pools and clocking the z9 mini

Yeah I read the whole topic (30 page's a lott of pages) but I saw never if I could mine with a other PSU then the orginal
Has anybody the answer ?

There is no original PSU as it does not come with one.  So whatever PSU has enough wattage is fine.  I ran my batch 1 on a corsair 750 for the past month but right now I have two of them running from an EVGA 1600.  As long as you have enough wattage and 4 x 6-pin PCIe connectors that's all you need.

[0ethereum0]

I get my z9 mini in a couple of days. I only have not the orginal Bitmain psu. Do I really need the psu of Bitmain or can I use my 1000 watt quit psu (6+8 pins) ?

https://bitcointalk.org/index.php?topic=4404847.0;topicseen
Pick this thread up buddy we have been talking on this thread for 2 months now about pools and clocking the z9 mini

Yeah I read the whole topic (30 page's a lott of pages) but I saw never if I could mine with a other PSU then the orginal
Has anybody the answer ?

There is no original PSU as it does not come with one.  So whatever PSU has enough wattage is fine.  I ran my batch 1 on a corsair 750 for the past month but right now I have two of them running from an EVGA 1600.  As long as you have enough wattage and 4 x 6-pin PCIe connectors that's all you need.

thank you  I have a 1000 watt I believe also corsair. That will do it

[htautosjay]

I have just taken delivery of 5 batch 2 Z9 Minis, and they are all limited somehow.. My batch 1 runs all day for 2 months at 17 sols.. these batch 2's will only work from 668 to 681 they just will not work on anything past 681.. wonder if flashing the Z9 May 18 firmware from Bitmain's site will load the same firmware as batch 1?...

Update just had one board drop off running at 668 for 15 mins just reduced it to 662 seems to be running more sols happy by being reduced....

[crazydane]

Just edit the cgminer.conf file and set whatever freq you want.

What directory is this file in?  After editing the file, do I restart the miner?

My batch 1 Z9's made it really easy to change the freq from the drop down under advanced config, these batch 2 miners, at least the ones I got, only shows "balanced" under advanced config, so they are hashing at 50% less than my batch 1 Z9's.

[not.you]

Just edit the cgminer.conf file and set whatever freq you want.

What directory is this file in?  After editing the file, do I restart the miner?

My batch 1 Z9's made it really easy to change the freq from the drop down under advanced config, these batch 2 miners, at least the ones I got, only shows "balanced" under advanced config, so they are hashing at 50% less than my batch 1 Z9's.

That whole "balanced" option thing appears to be a different firmware that only some of the batch 2 miners came with.  The cgminer.conf change I am referring to is something I have done on the old firmware so I don't know if it will work on the new one or not.  Somewhere around here though I saw a link someone posted about getting around that limit on that new firmware version, you may want to look for that if the cgminer.conf thing doesn't work on that version of the firmware.  The cgminer.conf file is in the config folder on the old firmware version.

You do have to restart cgminer after the change for it to take effect.  You can do

Code:

/etc/init.d/cgminer.sh restart

or you can just go to the miner configuration tab in the GUI and hit "save&apply" without changing anything and that will do it too.

[htautosjay]

Just edit the cgminer.conf file and set whatever freq you want.

What directory is this file in?  After editing the file, do I restart the miner?

My batch 1 Z9's made it really easy to change the freq from the drop down under advanced config, these batch 2 miners, at least the ones I got, only shows "balanced" under advanced config, so they are hashing at 50% less than my batch 1 Z9's.

That whole "balanced" option thing appears to be a different firmware that only some of the batch 2 miners came with.  The cgminer.conf change I am referring to is something I have done on the old firmware so I don't know if it will work on the new one or not.  Somewhere around here though I saw a link someone posted about getting around that limit on that new firmware version, you may want to look for that if the cgminer.conf thing doesn't work on that version of the firmware.  The cgminer.conf file is in the config folder on the old firmware version.

You do have to restart cgminer after the change for it to take effect.  You can do

Code:

/etc/init.d/cgminer.sh restart

or you can just go to the miner configuration tab in the GUI and hit "save&apply" without changing anything and that will do it too.

Hi buddy, where do we you make them changes?... how do you open the firmware?
Thanks

[crazydane]

Got it figured out.  The config file is in, wait for it, the /config directory.

You can use vi to edit it.

My batch 2 miners will not to more than 650.  Still a lot better than 500, but not like the 750 the batch 1 miners do. I tried 680 and they kept falling over so I settled on 650 for now.

[htautosjay]

Got it figured out.  The config file is in, wait for it, the /config directory.

You can use vi to edit it.

My batch 2 miners will not to more than 650.  Still a lot better than 500, but not like the 750 the batch 1 miners do. I tried 680 and they kept falling over so I settled on 650 for now.

wheres that directory buddy?... how do i find that...
cheers

[FrozenChaos]

Got it figured out.  The config file is in, wait for it, the /config directory.

You can use vi to edit it.

My batch 2 miners will not to more than 650.  Still a lot better than 500, but not like the 750 the batch 1 miners do. I tried 680 and they kept falling over so I settled on 650 for now.

That put you around 14k sol?

[htautosjay]

Got it figured out.  The config file is in, wait for it, the /config directory.

You can use vi to edit it.

My batch 2 miners will not to more than 650.  Still a lot better than 500, but not like the 750 the batch 1 miners do. I tried 680 and they kept falling over so I settled on 650 for now.

same here mine just fell over at 662 after 22 mins now at 650

[crazydane]

Yes, 14 ksol vs. 16 ksol on my batch 1 miners.

@htautosjay you can download putty and use that to ssh into the miner.  Then go to the root folder, and then ' cd config' then 'vi cgminer.conf'.

[htautosjay]

Yes, 14 ksol vs. 16 ksol on my batch 1 miners.

@htautosjay you can download putty and use that to ssh into the miner.  Then go to the root folder, and then ' cd config' then 'vi cgminer.conf'.

ill have a go
thank you