Topic: The Inside of Antminer Z9`s (Read 1362 times)

Most devices are not user friendly if not impossible in upgrading memory unless its a motherboard.

nice infos, thanks

You have to OC it to do 16kSol/s. And it takes a while before pool have your exact hashrate.

I like your post but I think that +1Merit doesn't deserve it because you write that the speed of your Z9 mini ~16 sol/s. But in the screenshot you provided I see only 12.1 sol/s. Where is the error? Declared power ~10 kSol / s. My works is ~11.95 kSol / s. Maybe you can adjust your comments?

I think upgrading these heatsinks would be an easy upgrade. At the very minimum you could run a copper base plate underneath the existing heatsinks.

anyone know how to control the fan speed?


never mind, just realized it's built in now in the Miner configuration page

There is currently very little information out there on the chips, but they do not seem like tensor chips. No one knows before Bitmain releases Specs.

Excellent and straight forward guide.  Thanks cod3gen!!

The Z9 is not nearly as bad when running at stock clock frequency as the fan only needs to operate at about 50% capacity indoors. If you overclock to 750Mhz you're looking at increased fan speeds which will start to remind you of the S9 days, but it's still not quite as bad. Max fan speed on these is ~6100RPM.

Yeah, these Z9 are still actually bearable for home use especially if you compare them to the S9s. Even with a DIY cooler case my S9 would still drive me and my entire family crazy with the noise. It turned out to be a good thing though as I was able to sell my S9 for $2500 back then when they are now selling at around $750.

I put one in my garage and while there is a whooshing sound of air moving, it is nothing like the high pitched whine from S9's. the noise is easily bearable and much better than the dual-fan miners. Thank god! Note I have it venting into an AC duct so that helps some but other than that it's open.

Thanks for the details man, appreciate it.. So it has no port/slot to add external memory?

If you had any of the older Antminer S1 or S3 which used around 300-400 Watts or so those were possible to mod in a way to make them quiet enough so you could sleep in the same room.

With my old S3 I took some computer case fans off an KNCMiner Jupiter and put them in a push pull confiiguration and was able to run them a full fan speed and it was very silent.

The miner maybe ran 10C hotter than stock but it was still manageable.

However I have no idea what these new ASIC chips require. They might need a much lower temp for stable operation.

Not sure i would call it home mining version.. It is noisy!

Do keep in mind that mine is overclocked, and set to a fan level of 85%. Its way to much noise to have in house, however it cannot be compared to units like S9, those have more noise. But running the Z9 stock, and removing stock fan and adding two silent fans i believe is possible.

I would also be interested in the noise and heat levels.

Previously owning a Antminer S9 which was a hell of a nightmare to run at a residential home (made too much noise even when placed inside a DIY cooler case), i'm hoping that this Z9 could be more suitable in the sense that i can actually live in my house while having this baby mining in one of my rooms.

It looks cool mate. I heard that Z9 is a home mining version, is it true? Could you share a bit about its noise level? I expect its noise should be lower than 67dB.
I'm not going to purchase any asics miner in near future but it could be applicable for home mining, I will change my mind for sure

great job. thank you

nice work

Hi folks!

Just as usual, whenever i receive a new miner - i always look at the inside of it. Its just my curiosity when it comes to electronics, need to deal with that in a proper way... And the only way is pop that thing straight open!!

Its very clear that with the latest miners, Bitmain have stepped up their game a bit. These chips and boards looks really professional when looking at them visually, thinking of how it all looked back in the earlier days of Antminer.. Damn, thats a big change! From using 100+ chips, down to a total of 12 chips is a big change. Wonder, is it actually only Equihash these chips can do?

There are no external memory, so memory needed for Equihash is onboard chip.

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This time ive added watermarks on the images.

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Lets start with the overall look of the miner:

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It looks really nice, right?

Its small, but slightly noisy with the stock fan thats mounted on it.
Ive had this thing running at 750 Mhz for over 24hrs now, producing about ~16 kSol/s continously. Temps are about ~62c with fans at a static speed of 85%. On that time there have been no rejects reported either by miner, or by pool! And 0 HW errors.

Time to see whats inside!!

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Overall frontside of PCB:


Overall backside of PCB:

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So, the PCB have a clean layout. Voltage regulation unit is very similiar, if not identical to B3. PIC16F1704 is used for communications, so it may be possible to adjust chip voltages very similiar to the L3 voltage script on this forum.

The chip used for the Z9 Mini is called BM1740, and this time they have used proper cooling paste (B3 only had cooling pads). There is no information or datasheets available for BM1740 chip as far as i know. There is no external memory, so the chip contains atleast enough memory for Equihash onboard.

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To get started ASAP with your own Z9:

Equihash Pool Status: https://www.powermining.pw/site/gomining?algo=equihash

Zencash(ZEN):

Zelcash(ZEL):

Zclassic(ZCL):

VoteCoin(VOT):

Bitcoin Private(BTCP):

Example Config:


Pool Frontend( https://www.powermining.pw/?address=YOURWALLETADDR ):

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So there is that. Next up in line is E3, they should start shipping sometime next month if i remember correctly. Like my post? +1 Merit!