Topic: Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order - page 206. (Read 531298 times)

Has anyone tried the firmware from 11-19? I'm giving it a shot on one machine right now. Curious how it is working for others?

So Running the S9 on only two boards.
Right now I'm getting 626 and 626 frequency, very balanced.
The miner is showing 8.8TH Avg
But slush pool is reporting only at 7.8
Nice, loss of a whole Terrahash to the interwebs.

There a better mining pool to use?

We should be able to stick an extra fan at the back controlled by a rheostat to suck the heat out at a steady pace.

We should be able to stick an extra fan at the back controlled by a rheostat to suck the heat out at a steady pace.

I got the same problems here, and just a look at the frequencies and temperatures of the boards tells me, that the large differences of frequencies over the boards is the cause of the problem of the fan, so being able to manually adjust fan would be the place wrong place to change something right now. (imo) And keep in mind that the card with the highest temp defines the fan rpm.

(Maybe large difference in temps causes a problem for the control loop of the fan speed)

Just look at freqs and temps in previous post


IMO. An even distribution of frequencies and thereby hashing power over the cards would help much more. It would decrease the chance of failure of cards with high frequency ==> high temps, and would most probably decrease the strong modulation of fan speeds. Be it cause by cycling of the mining process, or wrong interpretation of temperature by the fan speed control loop.

Honestly the fans on this thing are stupid, I can whisper to someone beside it one minute, and the next minute you gotta yell.
Why not find a bloody balance instead of on off?

...
Looking at the miner stats the following was noted for one miner (the other problematic is similar).

1 card seems to do fine freq. 533MHz and temp of 91C. (slightly high)
1 card seems pretty low in freq. 420MHz and temp of 72C. (pretty low)
1 card seems to be quite high freq. 578MHz and a high temp of 102. (very high)
(I can upload screenshots if needed)
...

Has anyone tried the firmware from 11-19? I'm giving it a shot on one machine right now. Curious how it is working for others?

Check whether your miner is actually restarting, when it cranks down. Or maybe part of the mining process. Am looking at this atm myself. This would explain it a bit.

In theory, when the miner would be constantly running, and one of the cards has a very high temperature, the fan should be running constantly high. Remark here, cranking the fan down manually (if it would be possible) to 80% would probably cause the high temp card to overheat & break for sure. Better would be to have all cards in same frequency range, so all cards have roughly same temperature range, then the automatic adjustment of the fan would work nicely (and probably at lot less noisy).

I understand that, But they dial right down, nearly off. than crank back up to make turbine speed.
This is why the damn thing is so noisy, if it idled at 80% or so, it wouldn't need to crank up nearly as often, keeping noise down and temp spikes down. The fluctuating temp/speed is annoying.

The fan thing and the freq are related as the fan rpm is adjusted to the highest temp of the 3 boards.

As it looks I can open the first warranty case, as one of the boards of 1 of the 2 problematic miners doesn't start anymore.

Great, and all this to faulty firmware of the manufacturer? Cause it is not able to adjust the frequency correctly. And seeing the warranty of Bitmain this is more than frustrating, since the board didn't even run for whole day. Let's see what their reply will be. =(

I can understand the Frequency thing, for over clocking.. but should allow underclocking...

But the fans? WTF Bitmain, how many complaints has this brought up?
Fix it!

Thanks very much for your answer,

Looks like I can prepare two repair tickets already for the time the boards fail, as I assume that the hot boards will not survive long. =(

It would interesting to know whether this is a hardware issue, or a software issue. If software, then Bitmain should try to come up with new firmware pretty soon, as the current will only destroy the miners.

3 new S9 B22 (11TH/s) arrived yesterday.
First miner plugged in, and working fine. Could be better when looking at stats, but okay =D

However, the other two new miners show strange behavior, even after installing latest firmware while closely following instructions.

It is similar to what other people wrote before, constant up and down of fan speed. (which is rather annoying, but in data-center setup, one doesn't hear it, but more worrying is, it doesn't seem to be enhancing the lifetime of miner and ventilators. especially when looking at the stats)

Looking at the miner stats the following was noted for one miner (the other problematic is similar).

1 card seems to do fine freq. 533MHz and temp of 91C. (slightly high)
1 card seems pretty low in freq. 420MHz and temp of 72C. (pretty low)
1 card seems to be quite high freq. 578MHz and a high temp of 102. (very high)
(I can upload screenshots if needed)

In average the hashrate achieves the ideal hashrate of 11 TH/S. However the frequencies and temperature of the low and high card are pretty worrying. Furthermore, actually one expect that the frequencies of the boards would be similar, something like all in range of a freq. 510MHz.

Honestly, being able to set the frequency manually would help. However, other people already stated that this is not possible with the latest firmware. Or is there already a new firmware again, which sets the right frequencies, or gives manual control?

Or is something seriously wrong with the 2 hothead miners?
Best regards