@Taserz: Can you explain to me where the message is for that it can last up to 3 hours before actually mining?
Strange thing i notice today:
I have bought a bunch of used S9's for a good price, and some are as good as new, but first models. (older hashboards also; 4.0)
Now, i have 3 of my own miners running on the 880 FW and 793Mhz, stock psu, making 16-16.5Th each. So, it was quite a safe bet to do the same with these other miners; flash the 880, throw 793 at them, and go. After not even 5 minutes, they quit on me; psu overloaded. (never had this with my own...).
Also, the first i flashed, gave me one board with 5.5TH, one with 4,19, and another with 4.3. Seems to me that 2 boards cant handle it.
Now i wondered: is this the 3 hour break-in period, or should i start swapping boards amongst miners in order to have the best selected and oc'd?
Can you give me your thoughts about this?
Thanks!
Topic: Antminer S9 Volt Rocket Ship firmware mod! ~Time to Max Out Your Bitmain PSU~ - page 11. (Read 32684 times)
September 27, 2018, 03:15:48 AM
September 26, 2018, 02:13:44 PM
Use 1 psu. The difference you gain is so small verse the power you draw beyond 800mhz.
I don't have to pay for electricity, so it not problem.
What is the maximum frequency you reach with S9i 14TH/s bmminer900?
September 26, 2018, 10:55:34 AM
You can it's a bitch and a half to code it but the gains are so small it isn't really worth it. Board tuning would be easier to do but if you got apw3++ only I wouldn't bother since you will have some boards that can take more power and clock higher and not enough juice out of that apw
I see. Do you know a firmware without dev fee that supports this?
I am curious because I think that maybe we could max out the PSU and chips better by tuning good chips and leaving bad chips on lower frequencies.
September 26, 2018, 10:52:18 AM
Great idea, thanks!
With the bmminer 900 at 800Mhz the GH/S(ideal) and GH/S(RT) is very close, boards speed almost equal and the has rate is 17.15 TH/s.
The power draw from the wall is 1900W, and this is the max of an APW3++ power supply, I confirm.
At 825Mhz the PSU overloaded and switch off.
So I need a second PSU.
With the bmminer 900 at 800Mhz the GH/S(ideal) and GH/S(RT) is very close, boards speed almost equal and the has rate is 17.15 TH/s.
The power draw from the wall is 1900W, and this is the max of an APW3++ power supply, I confirm.
At 825Mhz the PSU overloaded and switch off.
So I need a second PSU.
Use 1 psu. The difference you gain is so small verse the power you draw beyond 800mhz.
September 26, 2018, 05:58:47 AM
I would try bmminer 890 or 900 since it is probably a power issue at that frequency.
Great idea, thanks!
With the bmminer 900 at 800Mhz the GH/S(ideal) and GH/S(RT) is very close, boards speed almost equal and the has rate is 17.15 TH/s.
The power draw from the wall is 1900W, and this is the max of an APW3++ power supply, I confirm.
At 825Mhz the PSU overloaded and switch off.
So I need a second PSU.
September 26, 2018, 03:45:32 AM
My S9i running on 800Mhz with bmminer880, autotune stock firmware.
One of the board is much slower than the others.
What can I do?
http://i65.tinypic.com/t4tu9f.png
One of the board is much slower than the others.
What can I do?
http://i65.tinypic.com/t4tu9f.png
I would try bmminer 890 or 900 since it is probably a power issue at that frequency.
September 26, 2018, 02:55:29 AM
My S9i running on 800Mhz with bmminer880, autotune stock firmware.
One of the board is much slower than the others.
What can I do?
http://i65.tinypic.com/t4tu9f.png
One of the board is much slower than the others.
What can I do?
http://i65.tinypic.com/t4tu9f.png
September 25, 2018, 05:45:24 PM
I have only S9 with APW3++ PSU and bmminer880:
13.5TH miners running @15.4-15.8 TH @ 1620-1690W with 750MHz
13.0TH miners running @15.6 @ 1620W with 750MHz
14.0TH miners running @ 15.5-16.5 TH @ 1680-1720W with 725-775MHz
Is there any way to tune each board or even chip individually? I can not find any legit info about that.
13.5TH miners running @15.4-15.8 TH @ 1620-1690W with 750MHz
13.0TH miners running @15.6 @ 1620W with 750MHz
14.0TH miners running @ 15.5-16.5 TH @ 1680-1720W with 725-775MHz
Is there any way to tune each board or even chip individually? I can not find any legit info about that.
You can it's a bitch and a half to code it but the gains are so small it isn't really worth it. Board tuning would be easier to do but if you got apw3++ only I wouldn't bother since you will have some boards that can take more power and clock higher and not enough juice out of that apw
September 25, 2018, 04:02:57 PM
Are you running on s9 13.5 14 or s9i/s9j?
I have only S9 with APW3++ PSU and bmminer880:
13.5TH miners running @15.4-15.8 TH @ 1620-1690W with 750MHz
13.0TH miners running @15.6 @ 1620W with 750MHz
14.0TH miners running @ 15.5-16.5 TH @ 1680-1720W with 725-775MHz
Is there any way to tune each board or even chip individually? I can not find any legit info about that.
September 25, 2018, 03:38:31 PM
I run them at about 1750W now with bmminer880 at 750-775MHz. I had to tune one miner down to 725MHz because after some time it showed 0TH. The others run fine.
I might slowly ramp them up. But I want to stay with 880 for now and test how high I can go.
I might slowly ramp them up. But I want to stay with 880 for now and test how high I can go.
Are you running on s9 13.5 14 or s9i/s9j?
September 25, 2018, 03:01:27 PM
I run them at about 1750W now with bmminer880 at 750-775MHz. I had to tune one miner down to 725MHz because after some time it showed 0TH. The others run fine.
I might slowly ramp them up. But I want to stay with 880 for now and test how high I can go.
I might slowly ramp them up. But I want to stay with 880 for now and test how high I can go.
September 25, 2018, 02:51:21 PM
Of course it reduces the lifetime of the PSU, since it is not built for that load. On the other hand it has reserves. I am running them at higher loads for over a month now.
Check, if your cables are made for that loads! Dont burn your facility
A rule of thumb is 80% of peak load can be constand load. So if your cables are rated 10A, i europe you could theoretically draw 1800W constantly without problems. You can draw more, but keep in mind to check your cables some times.
Check, if your cables are made for that loads! Dont burn your facility
A rule of thumb is 80% of peak load can be constand load. So if your cables are rated 10A, i europe you could theoretically draw 1800W constantly without problems. You can draw more, but keep in mind to check your cables some times.So you are telling me that I live on an edge... That is good to hear
I've been checking cables every day at highest temperature peaks, they are "cold".
Cable input is rated for 16A 250V and output is 10A 220V(not sure for voltage, might be 250V).
Only once has it powered down due to overdraw(I guess), It reached ~2150W when I tried 940v 850 freq, and it even worked fine whole night while it was colder and when the ambient and outside temperature raised, it powered down.
September 25, 2018, 02:27:35 PM
I have a question for you @taserz.
I am using your mod for 3 of my Antminers.
First one is 13.5TH/s January batch, using 910v 825 freq and mining stable 17.6TH/s
Second one is 13.5TH/s March batch, using 920v 825 freq and mining stable 17.5TH/s
Third one is 14Th/s May batch, using 890v 825 freq and mining stable 17.6TH/s
All of them are using 1600W Bitmain's supply(I am only not sure for third one if it is maybe 1800W but it probably isn't, nevermind that).
My question is: why is PSU pulling 2kW from wall when it is rated only for 1600W, I mean, how is that even possible and will it hurt the PSU in any way? As I am running them for a week now and I had no problems.
I am using your mod for 3 of my Antminers.
First one is 13.5TH/s January batch, using 910v 825 freq and mining stable 17.6TH/s
Second one is 13.5TH/s March batch, using 920v 825 freq and mining stable 17.5TH/s
Third one is 14Th/s May batch, using 890v 825 freq and mining stable 17.6TH/s
All of them are using 1600W Bitmain's supply(I am only not sure for third one if it is maybe 1800W but it probably isn't, nevermind that).
My question is: why is PSU pulling 2kW from wall when it is rated only for 1600W, I mean, how is that even possible and will it hurt the PSU in any way? As I am running them for a week now and I had no problems.
Of course it reduces the lifetime of the PSU, since it is not built for that load. On the other hand it has reserves. I am running them at higher loads for over a month now.
Check, if your cables are made for that loads! Dont burn your facility
A rule of thumb is 80% of peak load can be constand load. So if your cables are rated 10A, i europe you could theoretically draw 1800W constantly without problems. You can draw more, but keep in mind to check your cables some times. September 25, 2018, 02:04:51 PM
I have a question for you @taserz.
I am using your mod for 3 of my Antminers.
First one is 13.5TH/s January batch, using 910v 825 freq and mining stable 17.6TH/s
Second one is 13.5TH/s March batch, using 920v 825 freq and mining stable 17.5TH/s
Third one is 14Th/s May batch, using 890v 825 freq and mining stable 17.6TH/s
All of them are using 1600W Bitmain's supply(I am only not sure for third one if it is maybe 1800W but it probably isn't, nevermind that).
My question is: why is PSU pulling 2kW from wall when it is rated only for 1600W, I mean, how is that even possible and will it hurt the PSU in any way? As I am running them for a week now and I had no problems.
I am using your mod for 3 of my Antminers.
First one is 13.5TH/s January batch, using 910v 825 freq and mining stable 17.6TH/s
Second one is 13.5TH/s March batch, using 920v 825 freq and mining stable 17.5TH/s
Third one is 14Th/s May batch, using 890v 825 freq and mining stable 17.6TH/s
All of them are using 1600W Bitmain's supply(I am only not sure for third one if it is maybe 1800W but it probably isn't, nevermind that).
My question is: why is PSU pulling 2kW from wall when it is rated only for 1600W, I mean, how is that even possible and will it hurt the PSU in any way? As I am running them for a week now and I had no problems.
September 25, 2018, 11:31:22 AM
S9 13.5Th + P3 Power PSU 2100w -> Fix 650M frimware -> bmminer880
0.08 $/kWh
750m - 15.7th - 1670w profit - $0.38
700m - 14.9th - 1540w profit - $0.44
650m - 13.9th - 1430w profit - $0.44
Overclocking is not profitable?
0.08 $/kWh
750m - 15.7th - 1670w profit - $0.38
700m - 14.9th - 1540w profit - $0.44
650m - 13.9th - 1430w profit - $0.44
Overclocking is not profitable?
September 20, 2018, 04:11:23 PM
Hi,
is it correct, that stock voltage of fixed frequency firmware is 940?
9.4V is the max voltage limit programmed into the default firmware. is it correct, that stock voltage of fixed frequency firmware is 940?
September 20, 2018, 03:51:59 PM
So my observations so far with 13.0, 13.5 and 14TH S9 from different batches with AWP3+ PSU are, that using bmminer880 with 750 - 775 MHz freq. gives me 15.5-16.0 TH and draws about 1700W from the 1600W PSU. But it works stable.
Using bmminer870 with 750-775MHz gives me more HW errors and draws only about 50W less power. Temps are about 2°C lower. But the hashrate seems also a bit decreased. Maybe due to the HW errors.
Thanks taserz for your work.
Any way to also enable the hidden settings on the minerAdvanced page?
Using bmminer870 with 750-775MHz gives me more HW errors and draws only about 50W less power. Temps are about 2°C lower. But the hashrate seems also a bit decreased. Maybe due to the HW errors.
Thanks taserz for your work.
Any way to also enable the hidden settings on the minerAdvanced page?
September 20, 2018, 03:30:30 PM
teserz please give me best bmminer for t9+ with 1800WPSU
September 20, 2018, 02:45:40 PM
Taserz, my fw actually is stock(13.5th) set to 940v
940 is the max auto tune will use but it will never actually auto tune anywhere near that
September 20, 2018, 06:26:51 AM
880 or 870
Taserz, my fw actually is stock(13.5th) set to 940v
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