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How To Guide HOW TO CHANGE THE SCREEN REFRESH RATE OF THE POCO F3 TO 90HZ

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kmykoh

Senior Member
Mar 31, 2017
241
93
shanghai
kmykoh97.github.io
if you joined telegram group, you would have known setting 90hz is useless. Few custom rom developers have said that f3 panel doesn't support 90hz. If we set it to run in 90hz, the hardware will continue running in 120hz, and using software to emulate 90hz content. So it actually saves negligible battery(battery saved only in gpu rendering which is so insignificant as f3 is using 870). This is also the reason few custom roms which support 90hz initially now abandon them in favor of 60 and 120 only eg: arrowos. So, please don't waste your time doing all these useless stuff. MIUI engineer is not as stupid and there are reasons why 90hz not in miui setting for you. Logically thinking, when you can switch to 90hz by just editing userspace props, why miui doesn't have the switch for it? Think...
 

lolo9393

Senior Member
Dec 28, 2011
1,026
274
Chau Doc Vietnam
if you joined telegram group, you would have known setting 90hz is useless. Few custom rom developers have said that f3 panel doesn't support 90hz. If we set it to run in 90hz, the hardware will continue running in 120hz, and using software to emulate 90hz content. So it actually saves negligible battery(battery saved only in gpu rendering which is so insignificant as f3 is using 870). This is also the reason few custom roms which support 90hz initially now abandon them in favor of 60 and 120 only eg: arrowos. So, please don't waste your time doing all these useless stuff. MIUI engineer is not as stupid and there are reasons why 90hz not in miui setting for you. Logically thinking, when you can switch to 90hz by just editing userspace props, why miui doesn't have the switch for it? Think...
Thanks for your wise comment.
It is worst in my case, I do not see any change between 60/120 Hz.
What or where is it to be watched at to see the difference?
Might be a real Marketing gimmick....My feeling!
 

jkmaxfli

Senior Member
May 6, 2012
623
91
if you joined telegram group, you would have known setting 90hz is useless. Few custom rom developers have said that f3 panel doesn't support 90hz. If we set it to run in 90hz, the hardware will continue running in 120hz, and using software to emulate 90hz content. So it actually saves negligible battery(battery saved only in gpu rendering which is so insignificant as f3 is using 870). This is also the reason few custom roms which support 90hz initially now abandon them in favor of 60 and 120 only eg: arrowos. So, please don't waste your time doing all these useless stuff. MIUI engineer is not as stupid and there are reasons why 90hz not in miui setting for you. Logically thinking, when you can switch to 90hz by just editing userspace props, why miui doesn't have the switch for it? Think...
I don't know where you came up with such nonsense that a display that supports 60hz and 120hz refresh rate does not support 90hz. Yes logically supports 90hz! And why isn't it included directly in the rom like a 90hz switch? Because a device that has a 120hz refresh rate sells better than a device that has a 90hz refresh rate. logical.
 

jkmaxfli

Senior Member
May 6, 2012
623
91
Thanks for your wise comment.
It is worst in my case, I do not see any change between 60/120 Hz.
What or where is it to be watched at to see the difference?
Might be a real Marketing gimmick....My feeling!
If you don't know the difference when scrolling through the text to 60hz and 120hz, for example, then you have really bad eyes, without insulting a friend.
 
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kmykoh

Senior Member
Mar 31, 2017
241
93
shanghai
kmykoh97.github.io
I don't know where you came up with such nonsense that a display that supports 60hz and 120hz refresh rate does not support 90hz. Yes logically supports 90hz! And why isn't it included directly in the rom like a 90hz switch? Because a device that has a 120hz refresh rate sells better than a device that has a 90hz refresh rate. logical.
Like I said, hardware doesn't support it. Yes, the screen itself supprts any frequency, but the controller doesn't(panel = screen + digitizer + controller). If xiaomi is using good controller, of course it can even support 1hz! Unfortunately not the case for poco f3. By 90hz switch i meant just a switch to allow users to switch to 90hz(ie: 60,90,120 in setting refresh rate section). How is that going to affect your marketing? It's just a setting and 120hz is still usable! The reason MIUI setting doesn't allow this is because it is no use. Simple! And this idea is not coming from me. It's coming from hentaios, unofficial protonos and arrowos devlopers. If you think you are better than them and has some serious proof otherwise, feel free to correct me. Until then, I don't think you are qualified enough for this argument. Hope it clarifies...
 
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kmykoh

Senior Member
Mar 31, 2017
241
93
shanghai
kmykoh97.github.io
Thanks for your wise comment.
It is worst in my case, I do not see any change between 60/120 Hz.
What or where is it to be watched at to see the difference?
Might be a real Marketing gimmick....My feeling!
There are difference between 60 and 120. And it's huge improvement, at least from what I can see. I don't think I can go back to 60hz anymore. But if you can't tell the difference, just use 60hz then. Using 90hz doesn't help with your battery much
 

kmykoh

Senior Member
Mar 31, 2017
241
93
shanghai
kmykoh97.github.io
I don't know where you came up with such nonsense that a display that supports 60hz and 120hz refresh rate does not support 90hz. Yes logically supports 90hz! And why isn't it included directly in the rom like a 90hz switch? Because a device that has a 120hz refresh rate sells better than a device that has a 90hz refresh rate. logical.
To make sure you don't say any illogical argument again. I took extra initiative to search exactly what some kernel developers wrote in telegram group. Here are some of the exact words from different kernel developers:

```
Aloith doesn't actually support 90Hz, when you enable 90Hz, the hardware renders at 120Hz, but it's downscaled to 90Hz in software, this downscaling operation eats extra GPU cycles, reducing battery life instead of increasing it

This is the reason MemeUI doesn't show it
Yes you can enable it in any rom... But as soon as you switch to 90Hz, what I explained above happens... There's no real benifit of being on 90Hz on this device

90hz is useless imo, you gain no battery save at all, and when you watch YouTube videos it'll be choppy AF, and all games that runs 60fps, will also stutter because of vsync, 90hz might help green tint though, but if you have minimal tint at 120hz like me, then 90hz have no effect at all.

Here's why
panelmeme dosen't have 90 hz option in IC for switch
all 90 does is lower how much frames the gpu renders
the screen eats just as much power
```
 

SilentDevGuy

Senior Member
Feb 10, 2021
81
21
To make sure you don't say any illogical argument again. I took extra initiative to search exactly what some kernel developers wrote in telegram group. Here are some of the exact words from different kernel developers:

```
Aloith doesn't actually support 90Hz, when you enable 90Hz, the hardware renders at 120Hz, but it's downscaled to 90Hz in software, this downscaling operation eats extra GPU cycles, reducing battery life instead of increasing it

This is the reason MemeUI doesn't show it
Yes you can enable it in any rom... But as soon as you switch to 90Hz, what I explained above happens... There's no real benifit of being on 90Hz on this device

90hz is useless imo, you gain no battery save at all, and when you watch YouTube videos it'll be choppy AF, and all games that runs 60fps, will also stutter because of vsync, 90hz might help green tint though, but if you have minimal tint at 120hz like me, then 90hz have no effect at all.

Here's why
panelmeme dosen't have 90 hz option in IC for switch
all 90 does is lower how much frames the gpu renders
the screen eats just as much power
```
Wheres the official documentation for the poco that says its not supported? Many phones run 90hz perfect no stutter or choppy videos vsync is entirely dependent on whatever is running and many apps can already run with no frame limit/vsync 144hz is even usable
 

Angyone1

Senior Member
Sep 6, 2018
104
14
Brescia
in fact after trying and trying again I noticed that the system in games is not as fluid as at 60 or 120 hz .. it is as if it continues to calculate and continues to stumble ... maybe those who do not have a good eye cannot notice it, but I see it very well ... so I think it is useless to set 90hz ... sorry my bad eng... -.-"
 

Nemix77

Senior Member
Nov 11, 2011
246
140
Toronto
Xiaomi Mi Pad 4
Xiaomi Poco F3
90Hz runs fine on custom roms, did not feel anything of out ordinary when I had it set to 90
To make sure you don't say any illogical argument again. I took extra initiative to search exactly what some kernel developers wrote in telegram group. Here are some of the exact words from different kernel developers:

```
Aloith doesn't actually support 90Hz, when you enable 90Hz, the hardware renders at 120Hz, but it's downscaled to 90Hz in software, this downscaling operation eats extra GPU cycles, reducing battery life instead of increasing it

This is the reason MemeUI doesn't show it
Yes you can enable it in any rom... But as soon as you switch to 90Hz, what I explained above happens... There's no real benifit of being on 90Hz on this device

90hz is useless imo, you gain no battery save at all, and when you watch YouTube videos it'll be choppy AF, and all games that runs 60fps, will also stutter because of vsync, 90hz might help green tint though, but if you have minimal tint at 120hz like me, then 90hz have no effect at all.

Here's why
panelmeme dosen't have 90 hz option in IC for switch
all 90 does is lower how much frames the gpu renders
the screen eats just as much power
```
Interesting read.
 
Last edited:

kmykoh

Senior Member
Mar 31, 2017
241
93
shanghai
kmykoh97.github.io
Wheres the official documentation for the poco that says its not supported? Many phones run 90hz perfect no stutter or choppy videos vsync is entirely dependent on whatever is running and many apps can already run with no frame limit/vsync 144hz is even usable
wheres the official documentation that says it supports 90hz? Several developers say that xiaomi is using cheap panel ic that doesnt do dynamic refresh rate in hardware level hence only supporting 60 and 120hz. I am trusting the developers
 
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theoalex50

Member
May 25, 2021
40
4
To make sure you don't say any illogical argument again. I took extra initiative to search exactly what some kernel developers wrote in telegram group. Here are some of the exact words from different kernel developers:

```
Aloith doesn't actually support 90Hz, when you enable 90Hz, the hardware renders at 120Hz, but it's downscaled to 90Hz in software, this downscaling operation eats extra GPU cycles, reducing battery life instead of increasing it

This is the reason MemeUI doesn't show it
Yes you can enable it in any rom... But as soon as you switch to 90Hz, what I explained above happens... There's no real benifit of being on 90Hz on this device

90hz is useless imo, you gain no battery save at all, and when you watch YouTube videos it'll be choppy AF, and all games that runs 60fps, will also stutter because of vsync, 90hz might help green tint though, but if you have minimal tint at 120hz like me, then 90hz have no effect at all.

Here's why
panelmeme dosen't have 90 hz option in IC for switch
all 90 does is lower how much frames the gpu renders
the screen eats just as much power
```
To be honest, I tried both 120 and 90 for a week each. I had 2 hours extra sot with the 90 htz. So in my experience what you mentioned doesnt apply. I hope that im not an exception.
 

kmykoh

Senior Member
Mar 31, 2017
241
93
shanghai
kmykoh97.github.io
To be honest, I tried both 120 and 90 for a week each. I had 2 hours extra sot with the 90 htz. So in my experience what you mentioned doesnt apply. I hope that im not an exception.
go to telegram group and argue with developers there. I was just telling what developers told. I am using hos now and there's no option to switch to 90 hz so i can't compare
 

scarttmax

Member
Jun 23, 2021
10
0
Xiaomi Poco F3
This is no longer working
Screenshot_2021-07-16-20-52-00-900_by4a.setedit22.jpg
 

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  • 12
    If we want to increase the battery life a little more, we can lower the refresh rate of the screen from 120Hz to 90Hz, thus we will achieve extra savings without having to put the screen at 60Hz.

    To achieve this, we download the SetEdit app from the Play Store.

    Now we will do the following steps:

    1.- We check that we have the screen at 120Hz.
    2.- We open the SetEdit app, we look for the record "user_refresh_rate".
    3.- Click on the record and edit it with the "Edit Value" option.
    4.- We will get 120, we change that value to 90 and press “Save Changes”.
    5.- We close the SetEdit app so that the changes are saved.

    Now the screen will have a 90Hz refresh rate, we can check it with Display Checker, although there are other applications.

    Greetings.
    5
    I don't know where you came up with such nonsense that a display that supports 60hz and 120hz refresh rate does not support 90hz. Yes logically supports 90hz! And why isn't it included directly in the rom like a 90hz switch? Because a device that has a 120hz refresh rate sells better than a device that has a 90hz refresh rate. logical.
    To make sure you don't say any illogical argument again. I took extra initiative to search exactly what some kernel developers wrote in telegram group. Here are some of the exact words from different kernel developers:

    ```
    Aloith doesn't actually support 90Hz, when you enable 90Hz, the hardware renders at 120Hz, but it's downscaled to 90Hz in software, this downscaling operation eats extra GPU cycles, reducing battery life instead of increasing it

    This is the reason MemeUI doesn't show it
    Yes you can enable it in any rom... But as soon as you switch to 90Hz, what I explained above happens... There's no real benifit of being on 90Hz on this device

    90hz is useless imo, you gain no battery save at all, and when you watch YouTube videos it'll be choppy AF, and all games that runs 60fps, will also stutter because of vsync, 90hz might help green tint though, but if you have minimal tint at 120hz like me, then 90hz have no effect at all.

    Here's why
    panelmeme dosen't have 90 hz option in IC for switch
    all 90 does is lower how much frames the gpu renders
    the screen eats just as much power
    ```
    3
    if you joined telegram group, you would have known setting 90hz is useless. Few custom rom developers have said that f3 panel doesn't support 90hz. If we set it to run in 90hz, the hardware will continue running in 120hz, and using software to emulate 90hz content. So it actually saves negligible battery(battery saved only in gpu rendering which is so insignificant as f3 is using 870). This is also the reason few custom roms which support 90hz initially now abandon them in favor of 60 and 120 only eg: arrowos. So, please don't waste your time doing all these useless stuff. MIUI engineer is not as stupid and there are reasons why 90hz not in miui setting for you. Logically thinking, when you can switch to 90hz by just editing userspace props, why miui doesn't have the switch for it? Think...
    1
    90Hz runs fine on custom roms, did not feel anything of out ordinary when I had it set to 90

    Interesting read.
    yeah, you can but doesn't help with battery life. So in the end, it is matter of is doing this worth it or not. If you like 90hz more than 120hz, then of course you are free to use that ;)