How To Overclock Your S9/T9+,T9,R4 To 18TH/s Free.

[dutchlincoln]

I am running a T9+ with two boards at 850 MHz, peaking around 109C. It's been stable at that temp for weeks. I had disabled the temperature protection earlier and melted one of the chips in the low 120C range. So 110C should be fine.

ok.
They melt at 120 degrees....
So 110 should be fine...

Am i missing something here?

[tim-bc]

ok.
They melt at 120 degrees....
So 110 should be fine...

Am i missing something here?

Well, of course it does decrease the lifespan... but seeing as the T9+ thermal protection kicks in at 110C chip temps, it shouldn't be hot enough to instantly damage any components.

[dutchlincoln]

Well, of course it does decrease the lifespan... but seeing as the T9+ thermal protection kicks in at 110C chip temps, it shouldn't be hot enough to instantly damage any components.

im sure that revving your car in the red zone, but before rev limiter kicks in wont kill it instantly as well, but still i wouldnt buy your car if you did...  

[take876]

good day, i like the post u made to overclock bitmain s9, however when i set frequency to 1 it runs at 850mh as you said. Is there another code to set the fixed frequency to something like 700mhz? if you can can you please email me it at janoycuff@gmail.com  . im using 1600w psu and would want miner to run at 700mh

[thierry4wd]

Easy , on "echo "\"bitmain-freq\" : \"1\"," " replace the "1" number for your desire freq,

for you, take      -   echo "\"bitmain-freq\" : \"700\","   -

[take876]

OK THANKS, so this will make the miner work over clock as when i use skylaker code above?

[thierry4wd]

No , if you take freq "700" , it run at 700mhz and 870Mv chip ... (i read the code source)

[take876]

ok thanks, so how can i increase the chip voltage to 923mv?

[geolyk]

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

[BitMaxz]

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.

[thierry4wd]

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

[Artemis3]

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...

[mikeywith]

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.

[thierry4wd]

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 !!!

[tim-bc]

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.

[mikeywith]

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?

[geolyk]

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

[thierry4wd]

hi , just try my bmminer optimized full free and post your opinion here :

https://bitcointalk.org/index.php?topic=5070980.0

[geolyk]

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?

[BitMaxz]

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%.