Antminer Z9 mini overclocked

[Warlockks]

Looks to me like the power supply failed on that hashboard.  I would guess one of the FETs failed and took out the switcher.

You may be able to get it working again by removing the bad power supply chips, and running on just the remaining power supplies.

[hawkfish007]

Looks to me like the power supply failed on that hashboard.  I would guess one of the FETs failed and took out the switcher.

You may be able to get it working again by removing the bad power supply chips, and running on just the remaining power supplies.

I sent the board for repair, but Bitmain said that the board is not repairable. I am getting a replacement board for $200.

[Captain Crypto Pants]

Looks to me like the power supply failed on that hashboard.  I would guess one of the FETs failed and took out the switcher.

You may be able to get it working again by removing the bad power supply chips, and running on just the remaining power supplies.

I sent the board for repair, but Bitmain said that the board is not repairable. I am getting a replacement board for $200.

Is that from Bitmain? I've never had to buy replacement parts, are they super high on shipping like for the antminers?

Also, it's been about 30 days of running this thing wide open and no issues

[htautosjay]

Hawkfish007 that is a nice setup!

 What do you think about running my fan @50% constantly to keep the temperature under 60 degrees? I see that everyone else seems to let them run much higher closer to 70.

My Antminer A3 always ran hot, and wouldn't run overclocked at all. It's temps were always above 73 degrees. Where my L3s ran much cooler.

What is a comfortable temperature when running overclocked?

Have any of you guys heard about the new August batch of Z9 mini, the overclocking feature being removed?.. I have a batch 1 Z9 mini on 750 freq... but how do i get my August batch to 750?..
Thanks

[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) ?

[htautosjay]

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

[imine2]

Hi,
New member!
Don't have a screencapture yet!

These are my findngs:

I voided my guarantee and removed the backplate (with small holes) completely !!!

Doing 750 MHz with original fan in auto-mode.
Doing an avarage of 16.28 KSol/s.
My ambient room temp about 23-26 Celsius depending sunny or not (+ summer).
My temp (PCB) 49-53 C and temp (Chip) 63-67 C.
Fan speed normaly between 3600 - 3720 rpm.

If anyone of you already voided your guarantee like me perhaps you could try doing what I have done and for everyone else confirm / dismiss my findings.


Just sharing own experiences !

(did just post this in thread about 2 fans on Z mini)

[grinbuck]

I have a question regarding the Z9 Mini - not sure if this is the right thread but it's the closest I could find.

I'm planning on running 3 Z9 mini's off of a standard 1600w bitmain apw++ power supply running off of a 240v circuit. I plan to overclock all 3 to 750m (consumes about 400-450w each so well within the apw++ limits).

My question is this:

The apw++ has 10 pcie connectors. I need 12 to run 3 z9 mini's. I'm planning on connecting 9 of them directly to the hashing boards of the 3 units and using 2 splitters to split the power of the last pcie connector into 3 - for the 3 control boards.

Splitter I'm planning to use (for reference):
https://www.amazon.ca/StarTech-com-PCIEXSPLIT6-6-Inch-Express-Splitter/dp/B004NNTVT6/ref=sr_1_14?ie=UTF8&qid=1535493571&sr=8-14&keywords=pcie+splitter

This is assuming that the control boards dont take up much power compared to the actual hash boards. Given that, I'm thinking it would be OK to run three control boards off the same pcie connector.

Am I correct in this assumption? Is it safe to do what I am planning to?

Any input much appreciated. Thanks.

[htautosjay]

I have a question regarding the Z9 Mini - not sure if this is the right thread but it's the closest I could find.

I'm planning on running 3 Z9 mini's off of a standard 1600w bitmain apw++ power supply running off of a 240v circuit. I plan to overclock all 3 to 750m (consumes about 400-450w each so well within the apw++ limits).

My question is this:

The apw++ has 10 pcie connectors. I need 12 to run 3 z9 mini's. I'm planning on connecting 9 of them directly to the hashing boards of the 3 units and using 2 splitters to split the power of the last pcie connector into 3 - for the 3 control boards.

Splitter I'm planning to use (for reference):
https://www.amazon.ca/StarTech-com-PCIEXSPLIT6-6-Inch-Express-Splitter/dp/B004NNTVT6/ref=sr_1_14?ie=UTF8&qid=1535493571&sr=8-14&keywords=pcie+splitter

This is assuming that the control boards dont take up much power compared to the actual hash boards. Given that, I'm thinking it would be OK to run three control boards off the same pcie connector.

Am I correct in this assumption? Is it safe to do what I am planning to?

Any input much appreciated. Thanks.

I donnt think you will power 3 clocked z9's.. i have 2 z9's clocked on one PSW3++ Firstly i am getting 750 mhz 16.5/17 sols out of one z9 and i can only get 681mhz out of the other 14.7/15.2 sols if i push the second z9 higher i begins high and drops off to zero hash rate.. i am guessing power failure.. but 2 do run nicely off one Bitmain PSU
Pics on my twitter

 https://twitter.com/mrtraderman

[grinbuck]

Shoot! I was hoping to save on the price of an additional PSU. My miners arrive between 5-15 Sep so I'll try hooking them up and update this thread here then.

Maybe what seems theoretically all right is not possible practically for whatever reason.

[TheRealCashen]

My 2 latest z9s will not do 750. faults

[not.you]

My 2 latest z9s will not do 750. faults

Same.  My new one will do 712 though, so that's decent.  I get 15.5 out of this one.  My batch 1 unit does better.  I have the batch one at 756 and it's getting 16.4 ksol.

[Sebahl]

Shoot! I was hoping to save on the price of an additional PSU. My miners arrive between 5-15 Sep so I'll try hooking them up and update this thread here then.

Maybe what seems theoretically all right is not possible practically for whatever reason.

You can power 3 as long as you don't overclock any of them.

[grinbuck]

Shoot! I was hoping to save on the price of an additional PSU. My miners arrive between 5-15 Sep so I'll try hooking them up and update this thread here then.

Maybe what seems theoretically all right is not possible practically for whatever reason.

You can power 3 as long as you don't overclock any of them.

But why? Overclocked each takes a max of 450w - that's a maximum of 1350w total. Some of my S9's running off the same type of supply consume up to 1450w. I'm curious as to what the difference is that's all.

Edit: It's to be noted here that I'm using a 240v circuit for my power supply. On 110v the supply can only generate up to 1200w of power but on a 240v it can do 1600w. Maybe this is the reason for the discrepancy reported here?

[Sebahl]

Shoot! I was hoping to save on the price of an additional PSU. My miners arrive between 5-15 Sep so I'll try hooking them up and update this thread here then.

Maybe what seems theoretically all right is not possible practically for whatever reason.

You can power 3 as long as you don't overclock any of them.

But why? Overclocked each takes a max of 450w - that's a maximum of 1350w total. Some of my S9's running off the same type of supply consume up to 1450w. I'm curious as to what the difference is that's all.

Edit: It's to be noted here that I'm using a 240v circuit for my power supply. On 110v the supply can only generate up to 1200w of power but on a 240v it can do 1600w. Maybe this is the reason for the discrepancy reported here?

Oh I thought you were running 110v. With 240V you should be able to.

[xpulse]

My 2 latest z9s will not do 750. faults

Same.  My new one will do 712 though, so that's decent.  I get 15.5 out of this one.  My batch 1 unit does better.  I have the batch one at 756 and it's getting 16.4 ksol.

Same here... Batch1 faster a little bit... difference ~1 - 1080 TI.

[TGJ]

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.

[Captain Crypto Pants]

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.

That is really interesting, I wonder what is the difference? Mine has been ripping along at 750 for over a month without any problems. It has been an impressive little machine.

And you are not the only one who seems to be having issues with batch 2.  And probably can't open a support ticket since you technically voided the warranty by OC it.

[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.

[shaninium]

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