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Topic: How To Overclock Your S9/T9+,T9,R4 To 18TH/s Free. (Read 3041 times)

legendary
Activity: 3374
Merit: 3095
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I want make RPM fan lower.. because 6320 RPM is very high..

The only parameter you need to change if you want to lower the fan speed is "bitmain-fan-pwm".
As you can see from the code above it is set to 60 you can change it to 50 or lower if you want to drop the fan RPM speed a bit.
newbie
Activity: 1
Merit: 0
Would these changes work for the antminer S9se?

Code:
"api-listen" : true,
"api-network" : true,
"api-groups" : "A:stats:pools:devs:summary:version",
"api-allow" : "A:0/0,W:*",
"bitmain-fan-ctrl" : true,
"bitmain-fan-pwm" : "60",
"bitmain-use-vil" : true,
"bitmain-freq" : "O",
"bitmain-voltage" : "950"

Current Frequency is 458. My changes:

Code:
"bitmain-fan-ctrl" : true,
"bitmain-fan-pwm" : "60",
"bitmain-use-vil" : true,
"bitmain-freq" : "400",
"bitmain-voltage" : "850"
Did you ever get this to work ? If so, how did you get ssh enabled on the S9 SE ?
Searched but failed.   
sr. member
Activity: 446
Merit: 347
From memory, the T9 + this launches at 575mhz and 890mv, 890mv is HUGE !!!

from my experience, it works very well at 575mhz (original speed) and 800mv or 790mv, thanks to that it saves about 300w ...

for your speed of 300mhz, you will have to set it to 790mv, or try 780 or 770mv, but it may not launch, or crash after a few minutes ...

It is necessary to understand, for comparison, the frequency is the speed which one asks of it, and the voltage and the energy which one gives it, if it does not have enough energy it will fail, but if it has too much , it will simply consume too much current!

ps: if you are looking to reduce noise, then set the fan fixed, the T9 + can go up to 105c chips absolutely without any problems, without any problem (i run 3 T9 + at 105-110c all time on arround 2 years !!! without any problems ...) ...

with pleasure;)
newbie
Activity: 2
Merit: 5
If you have set 300mhz, replace 0706 by 790mv, on all m'y test 790mw IS lower value stable... Make 790mv and you see you low power and lower temp ! Wink

what is the relationship between frequency and voltage? Also how directly does it relate to the power consumption? I tried to find information about such things but the web has too many documents discussing other stuff but using these words so search engines are net helpful. Would be really grateful for some hints / pointers or explaination as I am obviously trying to find a sweetspot of low enegery consumption and less noise fan speed.
newbie
Activity: 14
Merit: 4
Would these changes work for the antminer S9se?

Code:
"api-listen" : true,
"api-network" : true,
"api-groups" : "A:stats:pools:devs:summary:version",
"api-allow" : "A:0/0,W:*",
"bitmain-fan-ctrl" : true,
"bitmain-fan-pwm" : "60",
"bitmain-use-vil" : true,
"bitmain-freq" : "O",
"bitmain-voltage" : "950"

Current Frequency is 458. My changes:

Code:
"bitmain-fan-ctrl" : true,
"bitmain-fan-pwm" : "60",
"bitmain-use-vil" : true,
"bitmain-freq" : "400",
"bitmain-voltage" : "850"
sr. member
Activity: 446
Merit: 347
Hi, yes is good méthode, working for the voltage to ! If you have set 300mhz, replace 0706 by 790mv, on all m'y test 790mw IS lower value stable... Make 790mv and you see you low power and lower temp ! Wink

If you interessed, i have make specialy patch for S9 and T9+, juste make --fix-freq and New miner configuration page , full free Wink

PS : Kano, i have Big respect for you, but now you see again, don't need modify bmminer or cgminer for make this tweak Smiley
newbie
Activity: 2
Merit: 5
I have not been able to underclock my T9+ with the supposed settings that were suggested here but playing around with the ideas from here I found a solution that I wanted to post / share.

So the problem was that that my miner also already had autotuning available and changing "bitmain-freq": "some_value" would be ignored after rebooting.

So first I recognized using top that there was a process /usr/bin/bmminer --version-file /usr/bin/compile_time --api-listen --default-config /config/bmminer.conf running.

Thus I checked /usr/bin/bmminer --help to recognize that there is an option --fixed-freq        Set bitmain miner use fixed freq which probably could also be set in /config/bmminer.conf.

Thus I added the line "fixed-freq":true, to the bmminer.conf so that in total it looked like that:

Code:
{
"pools" : [
{
"url" : "",
"user" : "",
"pass" : ""
}
]
,
"api-listen" : true,
"api-network" : true,
"api-groups" : "A:stats:pools:devs:summary:version",
"api-allow" : "A:0/0,W:*",
"fixed-freq" : true,
"bitmain-fan-ctrl": true,
"bitmain-fan-pwm": "50",
"bitmain-use-vil" : true,
"bitmain-freq" : "300",
"bitmain-voltage" : "0706",
"multi-version" : "1"
}

In this way I was able to underclock the miner and tune down the fan. actually the PSU is now more noise as it's fan cannot be regulated by the software (what a pitty because it still produces 50db).

running the following firmware:

Code:
Miner Type Antminer T9+
Hostname miner2
Model GNU/Linux
Hardware Version 16.0.1.3
Kernel Version Linux 3.14.0-xilinx-ge8a2f71-dirty #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017
File System Version Wed Nov 15 17:18:06 CST 2017
Logic Version T9+_V2.40
BMminer Version 2.0.0
legendary
Activity: 3374
Merit: 3095
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There is no exact value but you can try to play around 50% to 70% to get around 3500 rpm speed.

Replace this value

Code:
echo "\"bitmain-fan-pwm\" : \"${ant_fan_customize_value}\","	>> /config/bmminer.conf

something like below.

Code:
echo "\"bitmain-fan-pwm\" : \"50\","    >> /config/bmminer.conf

The 50 above is the percentage where you can customize from 10% to 100% you can try to play and replace it something like 60% or 70%.
newbie
Activity: 21
Merit: 2
Code:
if [ "${ant_fan_customize_switch}" = "true" ]; then
echo "\"bitmain-fan-ctrl\" : "true"," >> /config/bmminer.conf
echo "\"bitmain-fan-pwm\" : \"${ant_fan_customize_value}\"," >> /config/bmminer.conf

how i can make it to run about 3500rpms my fans?
sr. member
Activity: 446
Merit: 347
hi , just try my bmminer optimized full free Wink and post your opinion here :

https://bitcointalksearch.org/topic/antminer-t9-mod-eco-free-power-full-free-5070980
newbie
Activity: 21
Merit: 2
i dont want to overclock my T9+
I only want to make it more silence ....i got a custom FW but this one has dev fee..and is not 2% is much more...stealing a lot of power
legendary
Activity: 2394
Merit: 6581
be constructive or S.T.F.U
I dunno, I still have an S9 running on 850 mhz with two apw3+ psus from before LPM firmware came out. You just have to adjust bmminer to force 9.4V to stay stable, and keep your environment cool I guess. It's definitely not that power efficient though so I would only recommend it for testing or if your power is nearly free.

what temps and fans is it running at?
full member
Activity: 538
Merit: 175
i do not suggest this over over-clocking at any situation, even if your psu was able to supply 2500w which n theory good enough to support freq of 850, it pretty a lot of load on the miner that will take it to snap city in a very short period of time.

I dunno, I still have an S9 running on 850 mhz with two apw3+ psus from before LPM firmware came out. You just have to adjust bmminer to force 9.4V to stay stable, and keep your environment cool I guess. It's definitely not that power efficient though so I would only recommend it for testing or if your power is nearly free.
sr. member
Activity: 446
Merit: 347
Yes of corse ! but i take only one error, the 2200W is for the T9+ ; i don't know for the S9 , but, the S9 and T9+ have same code, so i think the bug is on S9 to ... do not use it !!!
legendary
Activity: 2394
Merit: 6581
be constructive or S.T.F.U
and the miner take 2200w on psu and running VERY HOT !!!

i doubt it will be functioning long enough to get hot, it will be burned out real fast.

i do not suggest this over over-clocking at any situation, even if your psu was able to supply 2500w which n theory good enough to support freq of 850, it pretty a lot of load on the miner that will take it to snap city in a very short period of time.
legendary
Activity: 2030
Merit: 1569
CLEAN non GPL infringing code made in Rust lang
Your "bitmain-freq" and "bitmain-voltage" set up is wrong. Look at the first page again and the bitmain freq should be set to 1 and for bitmain-voltage it should be set to 200.

BitMaxz, where did you got this information from? According to sources online, what thierry4wd and others are trying to tell you is correct.

Its not "1", but the actual frequency. You (or whoever you copied this from) might have found a bug that happens to set it to max frequency...

Although I don't know what changes Bitmain did, you could ask the cgminer developer what this value is supposed to do...
sr. member
Activity: 446
Merit: 347
WARNING ! i thin you have wronk idéa ...

take in the freq you need (600 for exemple) and voltage is true, take "0706" , this value is original on firmware bitmain... and you don't agree to change without custome firmware, if you change this, the voltage is same, and no change value (in original firmaware)...

WARNING , if you take "1" on freq , this value is buged on original firmware bitmain, on this value "1" , set 850mhz on freq and 930mv on voltage, and the miner take 2200w on psu and running VERY HOT !!!

thanks Wink
legendary
Activity: 3374
Merit: 3095
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Code:
if [ "${ant_fan_customize_switch}" = "true" ]; then
        echo "\"bitmain-fan-ctrl\" : "true","                           >> /config/bmminer.conf
        echo "\"bitmain-fan-pwm\" : \"40","    >> /config/bmminer.conf

is it correct???

Edit the bitmain-fan-pwm from 100 to 40 which is correct according to your settings above.

Code:
"bitmain-fan-ctrl" : true,
"bitmain-fan-pwm" : "40",
"bitmain-use-vil" : true,
"bitmain-freq" : "550",
"bitmain-voltage" : "0706",
"multi-version" : "1"

i also edit like this my bmminer.conf
but no luck

Your "bitmain-freq" and "bitmain-voltage" set up is wrong. Look at the first page again and the bitmain freq should be set to 1 and for bitmain-voltage it should be set to 200.

Or just copy the first post and I think 40% is not enough to cooldown your miner while running at 110 temp.
newbie
Activity: 21
Merit: 2
sorry to ask .
Noob Question
I got an T9+
how i can set my fans at 40% ??

Code:
if [ "${ant_fan_customize_switch}" = "true" ]; then
        echo "\"bitmain-fan-ctrl\" : "true","                           >> /config/bmminer.conf
        echo "\"bitmain-fan-pwm\" : \"${ant_fan_customize_value}\","    >> /config/bmminer.conf

i got thi on my cfg file
i made it

Code:
if [ "${ant_fan_customize_switch}" = "true" ]; then
        echo "\"bitmain-fan-ctrl\" : "true","                           >> /config/bmminer.conf
        echo "\"bitmain-fan-pwm\" : \"40","    >> /config/bmminer.conf

is it correct???



Code:
"api-listen" : true,
"api-network" : true,
"api-groups" : "A:stats:pools:devs:summary:version",
"api-allow" : "A:0/0,W:*",
"bitmain-fan-ctrl" : true,
"bitmain-fan-pwm" : "40",
"bitmain-use-vil" : true,
"bitmain-freq" : "550",
"bitmain-voltage" : "0706",
"multi-version" : "1"

i also edit like this my bmminer.conf
but no luck
newbie
Activity: 8
Merit: 3
ok thanks, so how can i increase the chip voltage to 923mv?
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