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Topic: Antminer Z9 mini overclocked - page 15. (Read 26129 times)

newbie
Activity: 168
Merit: 0
September 05, 2018, 03:02:11 AM
Just checked the Bitmain site, and they have reduced the cost of the Z9 and Z9 mini!!!!

Z9 down to $3091Ships late Sept

Z9 Mini down to $793 Ships late Sept

Wonder if they can't sell them?
I wouldn't rush into ant more Z9 Minis.. I think wait and see if the big boy will OC
Just seen Bitmain yes... price dropping.. never a good sign.. the Z9 Mini's bet they will be $600 soon
newbie
Activity: 168
Merit: 0
September 05, 2018, 02:54:54 AM
Just checked the Bitmain site, and they have reduced the cost of the Z9 and Z9 mini!!!!

Z9 down to $3091Ships late Sept

Z9 Mini down to $793 Ships late Sept

Wonder if they can't sell them?
I wouldn't rush into ant more Z9 Minis.. I think wait and see if the big boy will OC
newbie
Activity: 14
Merit: 0
September 05, 2018, 02:15:45 AM
Just checked the Bitmain site, and they have reduced the cost of the Z9 and Z9 mini!!!!

Z9 down to $3091Ships late Sept

Z9 Mini down to $793 Ships late Sept

Wonder if they can't sell them?
newbie
Activity: 14
Merit: 0
September 05, 2018, 02:09:07 AM
is it possible to unplug 2 boards and start with only one board at a time?

that way you could try to find out what each board(PCB) can do?

Don't know if this could help somehow?
Its not advisable to plug powered connectors into yoiur boards , it can give them a spark that could pop something. text book start up is PSU off plug in boards and power up machine then plug in control board.. least i think  Roll Eyes that's how the Bitmain site says to do it.. i just personally plug all the connectors in then power up the PSU

Yes that's correct, i work in IT, and that is pretty much standard way to power any IT equipment. Thinking about it, it is pretty much standard to use ANY electrical equipment, but more so in any IT gear as the circuit boards are hypersensitive to voltage spikes/surges.
newbie
Activity: 168
Merit: 0
September 05, 2018, 02:06:07 AM
is it possible to unplug 2 boards and start with only one board at a time?

that way you could try to find out what each board(PCB) can do?

Don't know if this could help somehow?
Its not advisable to plug powered connectors into yoiur boards , it can give them a spark that could pop something. text book start up is PSU off plug in boards and power up machine then plug in control board.. least i think  Roll Eyes that's how the Bitmain site says to do it.. i just personally plug all the connectors in then power up the PSU
newbie
Activity: 14
Merit: 0
September 05, 2018, 01:58:38 AM

Brilliant, thanks imine2. Have not worked out how to give 'Rep' or what ever it is called on here yet, but when i do i will 'Rep' you. Us Newb's can't seem to do much on here Sad
jr. member
Activity: 98
Merit: 4
September 04, 2018, 04:40:30 PM
is it possible to unplug 2 boards and start with only one board at a time?

that way you could try to find out what each board(PCB) can do?

Don't know if this could help somehow?
newbie
Activity: 10
Merit: 0
September 04, 2018, 04:33:19 PM
anybody knows how to set the voltage for the ASIC chips? (for all of them at the same time, or per board, or per chip?)
thanks guys
newbie
Activity: 168
Merit: 0
September 04, 2018, 04:11:01 PM
Yep, that's the (May 2018)  Z9 Mini Firmware.. If you just flash that onto a miner that has the balance feature it has the drop down box like batch 1
Cool mate good add  Smiley
jr. member
Activity: 98
Merit: 4
September 04, 2018, 04:06:09 PM
firmware:
Batch 1
z9 mini

File: Antminer-Z9-Mini-201805262047-500M.tar.gz
sha-1: 8791eee569dfff728c8363e5d8fd93f68957a2ee

http://ftp://file.bitmain.com/shop-bitmain/firmwares/Antminer%20Z9%20mini/Firmware/Antminer-Z9-Mini-201805262047-500M.tar.gz

(There should NOT be a "http://" before the link! I can't see the "http://" when editing)


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newbie
Activity: 168
Merit: 0
September 04, 2018, 04:02:51 PM
If we crack open the firmware, can we adjust the individual board frequency ??

If you have a Batch one mini that is over clocked, set this to the freq you want the new one set to, save config file, then upload that config file into the batch 2 mini.

tinkering with Firmware is WOW! spookily freakingly scary!
I have a batch 1 Z9 Mini Il give it a wizz
report back
no difference, i uploaded the May 18 firmware onto my batch 2 z9's on arrival.. worth a shot.. but still dropping a chip on board 2  

Hey htautosjay. Wanted to ask you if you had a copy of the first batch firmware from bitmain support site? I did not DL it back then and now they replaced it. PM me if you willing to share mate. Lets see if there is some difference in Voltage settings that makes it less stable. Although Im afraid its simply lower quality chips as I measured power draw for 4x Z9mini from 1st batch @700 and now 4x 2nd batch @687. Results are 1493 W vs. 1530 W. There might be a small diff due to different PSU eff but never that big!
Deffo yes mate il pm you now.. i have batch 1 firmware standard and batch 1 from my 17 sol batch 1 Z9.
I have been searching through the firmware for voltage, but cant find it... also in the kernel log it says for some weird reason set freq to 750.. This is even when i have the freq set at 600... no where have i set freq to 750 but the firmware is doing some strange things.. i think its either temp or as you say power..
 
newbie
Activity: 17
Merit: 0
September 04, 2018, 03:41:46 PM
If we crack open the firmware, can we adjust the individual board frequency ??

If you have a Batch one mini that is over clocked, set this to the freq you want the new one set to, save config file, then upload that config file into the batch 2 mini.

tinkering with Firmware is WOW! spookily freakingly scary!
I have a batch 1 Z9 Mini Il give it a wizz
report back
no difference, i uploaded the May 18 firmware onto my batch 2 z9's on arrival.. worth a shot.. but still dropping a chip on board 2 

Hey htautosjay. Wanted to ask you if you had a copy of the first batch firmware from bitmain support site? I did not DL it back then and now they replaced it. PM me if you willing to share mate. Lets see if there is some difference in Voltage settings that makes it less stable. Although Im afraid its simply lower quality chips as I measured power draw for 4x Z9mini from 1st batch @700 and now 4x 2nd batch @687. Results are 1493 W vs. 1530 W. There might be a small diff due to different PSU eff but never that big!
newbie
Activity: 2
Merit: 0
September 04, 2018, 03:32:51 PM
Just had another Z9 Mini that arrived today have a chip blow out (x000) when Oc'd to 668 seems that the late batch 2 machines dont just stop hashing when Oc'd too much they loose a chip

Wow man feel sorry for you. Can you get a replacement board?
thing is it works ar 500 freq fine ... just when i OC it it fails, Bitmain will want a screenshot showing the failure.. and i cant give them a overlocked screenshot ...emmmmmmm  Huh Undecided
If there is a way to set the freq of the boards individually say board 1 at 675 board 2 at 550 and board 3 at 675 ??... any ideas??

Did you come up with any solution yet?

I'm having similar issue. I haven't looked hard enough to see if one of the chip fails but when I over clocked my second batch to 668, it would give me decent hash rate between 14-16k for few hours but then the hash rate would drop to 9k. So I'm guessing it must be the chip failure. This happened multiple times and I started with 700. Now I have further reduced it to 650. Crossing my fingers. Interestingly to OC, I just had to pick the frequency from the drop down options.

My Second z9 from the second batch, I had to overclock differently because the option wasn't there and that has been more stable at 675 frequency than the one which had the drop down option to change the frequency!

 
newbie
Activity: 168
Merit: 0
September 04, 2018, 02:43:42 PM
Just had another Z9 Mini that arrived today have a chip blow out (x000) when Oc'd to 668 seems that the late batch 2 machines dont just stop hashing when Oc'd too much they loose a chip

Wow man feel sorry for you. Can you get a replacement board?
thing is it works ar 500 freq fine ... just when i OC it it fails, Bitmain will want a screenshot showing the failure.. and i cant give them a overlocked screenshot ...emmmmmmm  Huh Undecided
If there is a way to set the freq of the boards individually say board 1 at 675 board 2 at 550 and board 3 at 675 ??... any ideas??
newbie
Activity: 168
Merit: 0
September 04, 2018, 02:41:51 PM
Just had another Z9 Mini that arrived today have a chip blow out (x000) when Oc'd to 668 seems that the late batch 2 machines dont just stop hashing when Oc'd too much they loose a chip

Wow man feel sorry for you. Can you get a replacement board?
thing is it works ar 500 freq fine ... just when i OC it it fails, Bitmain will want a screenshot showing the failure.. and i cant give them a overlocked screenshot ...emmmmmmm  Huh Undecided
newbie
Activity: 168
Merit: 0
September 04, 2018, 02:39:56 PM
Just had another Z9 Mini that arrived today have a chip blow out (x000) when Oc'd to 668 seems that the late batch 2 machines dont just stop hashing when Oc'd too much they loose a chip
When you say “have a chip blow out”, do you mean the board is fried?
no just goes from 0000 to 0x000 not burnt out just stopped working
TGJ
jr. member
Activity: 173
Merit: 5
September 04, 2018, 02:18:17 PM
Just had another Z9 Mini that arrived today have a chip blow out (x000) when Oc'd to 668 seems that the late batch 2 machines dont just stop hashing when Oc'd too much they loose a chip
When you say “have a chip blow out”, do you mean the board is fried?
newbie
Activity: 14
Merit: 0
September 04, 2018, 12:27:05 PM
Just had another Z9 Mini that arrived today have a chip blow out (x000) when Oc'd to 668 seems that the late batch 2 machines dont just stop hashing when Oc'd too much they loose a chip

Wow man feel sorry for you. Can you get a replacement board?
newbie
Activity: 168
Merit: 0
September 04, 2018, 12:15:06 PM
Just had another Z9 Mini that arrived today have a chip blow out (x000) when Oc'd to 668 seems that the late batch 2 machines dont just stop hashing when Oc'd too much they loose a chip
newbie
Activity: 168
Merit: 0
September 04, 2018, 11:57:22 AM
If we crack open the firmware, can we adjust the individual board frequency ??

If you have a Batch one mini that is over clocked, set this to the freq you want the new one set to, save config file, then upload that config file into the batch 2 mini.

tinkering with Firmware is WOW! spookily freakingly scary!
I have a batch 1 Z9 Mini Il give it a wizz
report back
no difference, i uploaded the May 18 firmware onto my batch 2 z9's on arrival.. worth a shot.. but still dropping a chip on board 2 
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