firmware with configurable frequency for antminer s9?

[SDRebel]

I found an old thread from here for a custom firmware, but the google link for the binary was dead. I also found the bitmain https://shop.bitmain.com/support/download firmware page, but chrome says "virus detected" so not sure wth...
also, there were a ton of options, so wasn't sure which one to download.
My idea is to lower the freq to run it at around 1000W with 120v.
thanks in advance

[BitMaxz]

I never tried to run s9 miner with 120v but I heard someone can run it without a problem. You just need to remove the 2 hashboard and let it run.

Or use Braiins OS to adjust it to low power or set the wattage you want.

[SDRebel]

I never tried to run s9 miner with 120v but I heard someone can run it without a problem. You just need to remove the 2 hashboard and let it run.

Or use Braiins OS to adjust it to low power or set the wattage you want.

oh I see, so instead of lowering the freq across all boards just run less of them?

[BitMaxz]

oh I see, so instead of lowering the freq across all boards just run less of them?

You can run it without removing the other hash board but expect some wires to be melted if you run it at 120v.

And there is no problem running s9 with only one hashboard based on what I heard.

Why not adjust the working mode to try running it with 3 hashboard? If it won't fry some wires and hash board your lucky.

The latest s9 firmware has multi-option under working mode you can underclock the unit to run it at low power mode.

Or if you want to manually set the power as I said above you need to flash it with modded firmware like Braiins OS.

[mikeywith]

oh I see, so instead of lowering the freq across all boards just run less of them?

That would be an option too, but you can also use custom firmware like Vnish or Braiins to underclock the miner to the point where it's safe to run on 110v, it also depends on what PSU you have, even the stock PSU models have a different rating, APW7 and APW3 have different capacity, you need to read the specs on the PSU I think it's 900-1200w for 110V.

You could also use stock firmware, there is one called multi-option user firmware, this is the link from the official bitmain website https://shop.bitmain.com/support/download?archivesId=007201606150352305686UFyndN10697&type=0

you can try to lower the hash rate by 1-2-3 terahash or go straight to the LPM (low power mode) which does about 80w/th and gives you 9th, so close to 720w which I think would be safe to run on 110v, but please make sure to read the specs on the PSU and also make sure to measure the power at the wall because the 80w/th is just a general number, every miner has its own numbers.

And don't run any non-Asicboost firmware, even Vnish comes with AB disabled (no clue why they do it), running stock setting without AB will surely pull over 1350w (more like 1400w) which is likely way above the max of Bitmain's PSUs on 110v.

[thierry4wd]

Or use mine, its fully free and open, and contain AB, make 800mv on voltage and 475mhz on frequency for start, run with 3 hashboard without any problem on 110V , its take arround 750w

[yxt]

From which original fw version was AB activated?

[Artemis3]

Around 2018 after Braiins OS was released they did as well.

[mikeywith]

From which original fw version was AB activated?

The publish date of the first Asicboost firmware by bitmain was 2018-10-23, and the firmware/file name is (ANTMINER-S9-LPM-20181102), the other 4 versions that came out after this also had Asicboost enabled by default.

[kano]

Or just go get the free versions from Bitmain, that don't charge you a fee to run them, that also do various performance settings and have done it for years.

https://support.bitmain.com/hc/en-us/articles/360011930734-ASICBoost-firmware-for-Antminer-S9-series-and-T9-

[Boolkugs]

Does anyone know how to adjust the power consumption in detail?

[DiskjockeyED]

Hi guys, I am currently making an S9 radiator haha

I will need a firmware with immersion version for the run without fan (that easy to find) on the other hand I have a particular request, is there a firmware with a reduction by chip temp?

Example if I lower the extractor with its potentiometer, as the chip will heat up (example set at 85°c) the miner will lower its frequency to come back to the target temperature?

Thanks in advance

[BitMaxz]

Hi guys, I am currently making an S9 radiator haha

I will need a firmware with immersion version for the run without fan (that easy to find) on the other hand I have a particular request, is there a firmware with a reduction by chip temp?

Example if I lower the extractor with its potentiometer, as the chip will heat up (example set at 85°c) the miner will lower its frequency to come back to the target temperature?

Thanks in advance

Vnish or Braiins OS firmware has this feature called auto-tunning you can also manually set the frequency/power of every chip on the hashboard.

Here's what it looks like

But auto-tunning is awesome it automatically reduces the frequency of overheating chips until it turns green or low temp.