Binary patched kernels for Pipo models

[dark_lnt]

Test results for overclocked m6 pro kernels
Standard kernel : antutu 18200
kernel 720 ddr : antutu 19000 stable
kernel 800 ddr : antutu 19230 stable
kernel 720 ddr cpu 1700 : 19330 stable

another one:
[ATTACH]3919[/ATTACH]
this is stock GPU
memory clocked to 720Mhz / 1.2V
The CPU is set to 1.704Ghz / 1.375V

again any feedback is highly appreciated!

If this works I've already generated another one with CPU clocked to 1.8Ghz / 1,375V

[giouncino]

Test results for overclocked m6 pro kernels
Standard kernel : antutu 18200
kernel 720 ddr : antutu 19000 stable
kernel 800 ddr : antutu 19230 stable
kernel 720 ddr cpu 1700 : 19330 stable

Thank you very much for your testing!!!!

for your information here in the following tables are summarized STOCK frequency-voltages associations for:

CPU
MHz mV
312 900
504 925
816 1000
1008 1075
1200 1200
1416 1250
1608 1300

RAM
MHz mV
580 1300


GPU
MHz mV
133 975
200 1025
266 1025
300 1050
400 1100
600 1250


now, I've prepared a couple of new kernels:
kernel_cpu1704h_gpu600_ddr720_low_voltage.zip
this one (that I'm currently using), difference with stock are highlighted:

CPU
MHz mV
312 900
504 925
816 975
1008 1025
1200 1100
1608 1200
1704 1300

GPU untouched (next step to be changed...)


RAM
MHz mV
720 1200




kernel_cpu1800h_gpu600_ddr800.zip
this one (not tested), difference with stock are highlighted:
CPU
MHz mV
312 900
504 925
816 975
1008 1025
1200 1100
1608 1200
1800 1350

GPU untouched (next step to be changed...)


RAM
MHz mV
800 1300


both of these are better (in terms of less power demands) than previous firmware you tested.

In particular CPU at 1.8Ghz is 1.35V (the file you tested before was 1.375V) and the ram are set to 800Mhz.

On my tablet I tested a modified version with 1.8Ghz with 1.3V (instead of 1.35) and antutu failed to complete.
Now, if you want, try this one. it could work.

I suggest you for a long term use to install: kernel_cpu1704h_gpu600_ddr720_low_voltage.zip to save battery... If you don't care battery drain, use the second one (and tell me about battery consumption).
Pay attention to tablet temperatures...

My next steps will be:
increase GPU to 650Mhz (600Mhz is stock)
try to reduce at minimum voltage for every frequency.

I'm sure that the best compromise for CPU frequency is 1.7Ghz.

[d33]

Well done Giouncino

Sent from my M8HD using Tapatalk

[dark_lnt]

Hey giouncino,

I'm having less positive results with your last two kernels on my tablet. The cpu 1800Mhz overclock one performs the worst out of all kernels with 18000 score, i noticed a lower framerate already in the demo's while running it. The kernel_cpu1704h_gpu600_ddr720_ low_voltage is not stable . It froze my screen when i stressed it.

Out of the tweaks the ones with memory overclock impressed me the most. I'm not sure if 1600 or rather 1700 Mhz for the cpu would be the sweet spot. I'm curious about small changes to the gpu.

Thank you very much for your testing!!!!

for your information here in the following tables are summarized STOCK frequency-voltages associations for:

CPU
MHz mV
312 900
504 925
816 1000
1008 1075
1200 1200
1416 1250
1608 1300

RAM
MHz mV
580 1300


GPU
MHz mV
133 975
200 1025
266 1025
300 1050
400 1100
600 1250


now, I've prepared a couple of new kernels:
[ATTACH]3936[/ATTACH]
this one (that I'm currently using), difference with stock are highlighted:

CPU
MHz mV
312 900
504 925
816 975
1008 1025
1200 1100
1608 1200
1704 1300

GPU untouched (next step to be changed...)


RAM
MHz mV
720 1200




[ATTACH]3937[/ATTACH]
this one (not tested), difference with stock are highlighted:
CPU
MHz mV
312 900
504 925
816 975
1008 1025
1200 1100
1608 1200
1800 1350

GPU untouched (next step to be changed...)


RAM
MHz mV
800 1300


both of these are better (in terms of less power demands) than previous firmware you tested.

In particular CPU at 1.8Ghz is 1.35V (the file you tested before was 1.375V) and the ram are set to 800Mhz.

On my tablet I tested a modified version with 1.8Ghz with 1.3V (instead of 1.35) and antutu failed to complete.
Now, if you want, try this one. it could work.

I suggest you for a long term use to install: kernel_cpu1704h_gpu600_ddr720_low_voltage.zip to save battery... If you don't care battery drain, use the second one (and tell me about battery consumption).
Pay attention to tablet temperatures...

My next steps will be:
increase GPU to 650Mhz (600Mhz is stock)
try to reduce at minimum voltage for every frequency.

I'm sure that the best compromise for CPU frequency is 1.7Ghz.

[d33]

Re: Binary patched kernels for Pipo models

Hey giouncino,

I'm having less positive results with your last two kernels on my tablet. The cpu 1800Mhz overclock one performs the worst out of all kernels with 18000 score, i noticed a lower framerate already in the demo's while running it. The kernel_cpu1704h_gpu600_ddr720_ low_voltage is not stable . It froze my screen when i stressed it.

Out of the tweaks the ones with memory overclock impressed me the most. I'm not sure if 1600 or rather 1700 would be the sweet spot. I'm curious about small changes to the gpu.

From what I've seen ram makes a big difference, CPU makes a small difference and GPU almost no difference

Sent from my M8HD using Tapatalk

[d33]

Re: Binary patched kernels for Pipo models

Thank you very much for your testing!!!!

for your information here in the following tables are summarized STOCK frequency-voltages associations for:

CPU
MHz mV
312 900
504 925
816 1000
1008 1075
1200 1200
1416 1250
1608 1300

RAM
MHz mV
580 1300


GPU
MHz mV
133 975
200 1025
266 1025
300 1050
400 1100
600 1250


now, I've prepared a couple of new kernels:
[ATTACH]3936[/ATTACH]
this one (that I'm currently using), difference with stock are highlighted:

CPU
MHz mV
312 900
504 925
816 975
1008 1025
1200 1100
1608 1200
1704 1300

GPU untouched (next step to be changed...)


RAM
MHz mV
720 1200




[ATTACH]3937[/ATTACH]
this one (not tested), difference with stock are highlighted:
CPU
MHz mV
312 900
504 925
816 975
1008 1025
1200 1100
1608 1200
1800 1350

GPU untouched (next step to be changed...)


RAM
MHz mV
800 1300


both of these are better (in terms of less power demands) than previous firmware you tested.

In particular CPU at 1.8Ghz is 1.35V (the file you tested before was 1.375V) and the ram are set to 800Mhz.

On my tablet I tested a modified version with 1.8Ghz with 1.3V (instead of 1.35) and antutu failed to complete.
Now, if you want, try this one. it could work.

I suggest you for a long term use to install: kernel_cpu1704h_gpu600_ddr720_low_voltage.zip to save battery... If you don't care battery drain, use the second one (and tell me about battery consumption).
Pay attention to tablet temperatures...

My next steps will be:
increase GPU to 650Mhz (600Mhz is stock)
try to reduce at minimum voltage for every frequency.

I'm sure that the best compromise for CPU frequency is 1.7Ghz.

Don't forget to patch the GPU ceiling freq if you go above 600. I had a small gain by raising to 666

Sent from my M8HD using Tapatalk

[giouncino]

Hey giouncino,

I'm having less positive results with your last two kernels on my tablet. The cpu 1800Mhz overclock one performs the worst out of all kernels with 18000 score, i noticed a lower framerate already in the demo's while running it. The kernel_cpu1704h_gpu600_ddr720_ low_voltage is not stable . It froze my screen when i stressed it.

Out of the tweaks the ones with memory overclock impressed me the most. I'm not sure if 1600 or rather 1700 Mhz for the cpu would be the sweet spot. I'm curious about small changes to the gpu.

Probably your CPU is less "pure" (lucky) than mine.
With kernel_cpu1704h_gpu600_ddr720_ low_voltage I've no stability issues so far. My antutu score is 19139points.
Now I'm going to make a "stability test" with antutu to see if there is something wrong somewhere.

The same could be with the voltages I set for 1.8Ghz. On your tablet probably 1.375V (maximum that can be set) is necessary to make the CPU working properly at 1.8Ghz.

Did you see any difference in general performances?

What about the temperature of the tablet? Is it becoming too hot in your opinion?

darrellr you're right, the best performances can be achieved by RAM overclocking. The CPU seems to be powerful enough by default, for that reason I think the best thing to do for the CPU is to look for the minimum voltage required to make run the tablet stable saving as much as possible the battery.

I've some concerns about GPU overclocking, due to the fact that the Mali-400 (as far as I know) is built on a 40nm. Then overclocking it could be very difficult, the GPU could drain a lot more battery (more than the CPU that is built on a 28nm technology) and could easily bring the tablet to overheat...

The RAM we have on our tablet tolerates very well massive overclocking. I'm tempted to go over 800Mhz to see were is the phisical limit...

[claro966]

R: Binary patched kernels for Pipo models

After some time of use the screen get black and an hard reset is needed with
1.7GHz GPU stock RAM 720. The first poster forma m6pro


Inviato dal mio M6pro utilizzando Tapatalk

[dark_lnt]

I have a Rk3066 Tvstick I believe the stock speed was only 233 on the gpu, and it was on 40nm chip. The Rk 3188 is on 28 nm so it produces far less heat but still uses the ancient mali 400 gpu. I think 600 mhz is already a high clockspeed.

I've some concerns about GPU overclocking, due to the fact that the Mali-400 (as far as I know) is built on a 40nm. Then overclocking it could be very difficult, the GPU could drain a lot more battery (more than the CPU that is built on a 28nm technology) and could easily bring the tablet to overheat...

The RAM we have on our tablet tolerates very well massive overclocking. I'm tempted to go over 800Mhz to see were is the phisical limit...

[dark_lnt]

Probably your CPU is less "pure" (lucky) than mine.
With kernel_cpu1704h_gpu600_ddr720_ low_voltage I've no stability issues so far. My antutu score is 19139points.
Now I'm going to make a "stability test" with antutu to see if there is something wrong somewhere.

The same could be with the voltages I set for 1.8Ghz. On your tablet probably 1.375V (maximum that can be set) is necessary to make the CPU working properly at 1.8Ghz.

Did you see any difference in general performances?

What about the temperature of the tablet? Is it becoming too hot in your opinion?

I 'm still testing different kernels and doing different tests. Your kernels that work well on my tablet give a nice performance boost. People who use it will immediately notice less framedrops in menus etc. Your work is really appreciated!

About the cpu on my tablet. Everything above 1600 starts to become less reliable. 1700mhz needs the maximum voltage, but even then it crashed antutu and geekbench some random times on cpu tests .

[spectra9]

Don't forget to patch the GPU ceiling freq if you go above 600. I had a small gain by raising to 666

Sent from my M8HD using Tapatalk

How do you patch the GPU ceiling freq?

[rrileypm]

Hey Guys,

I just did a new ROM for the M9 Max from a firmware dated 10/29/13...newer than the 2.1 ROM.

https://drive.google.com/file/d/0ByxbjJg99RBrMy0wNjVXWDY5WGc/edit?usp=sharing

I'm getting ready to upload the kit. Does anyone want to play around with the above kernel?

I'll post a link to the ROM to test if you have an M9 Max to test on. I just have to upload the whole thing, but it maybe tomorrow sometime, since my internet connection at the firehouse corrupts the upload to the FTP server. I may try putting it on my Google Drive temporarily, so stay tuned.

[giouncino]

I 'm still testing different kernels and doing different tests. Your kernels that work well on my tablet give a nice performance boost. People who use it will immediately notice less framedrops in menus etc. Your work is really appreciated!

About the cpu on my tablet. Everything above 1600 starts to become less reliable. 1700mhz needs the maximum voltage, but even then it crashed antutu and geekbench some random times on cpu tests .

thank you!

that's probably why all RK3188 are clocked to 1.6Ghz.
On mine at 1.7Ghz is still working without particular problems so far. It passed also antutu stability test without any issue.

This evening I'll going to test other combinations trying to unleash the full potentials of our tablet...

[WimUitTwente]

Hey Guys,

I just did a new ROM for the M9 Max from a firmware dated 10/29/13...newer than the 2.1 ROM.

https://drive.google.com/file/d/0ByxbjJg99RBrMy0wNjVXWDY5WGc/edit?usp=sharing

I'm getting ready to upload the kit. Does anyone want to play around with the above kernel?

I'll post a link to the ROM to test if you have an M9 Max to test on. I just have to upload the whole thing, but it maybe tomorrow sometime, since my internet connection at the firehouse corrupts the upload to the FTP server. I may try putting it on my Google Drive temporarily, so stay tuned.

this is 100% equal to kernel.img in Pipo_M9_Max_RileyROM_2.1

[A64]

Normally I'm a fan of overclocking as well (especially on PC) - but on the PiPO I'm a bit pessimistic. Do you see here a real gain in applications (handling, feeling) while sacrificing stability for that ~10% increase ?