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PC Drivers & Software

grishagrees
Journeyman III

cant put 240hz while creating custom resolution

Hello, i'm trying to create new custom resolution 5120x1440 but i cant go any higher than 200hz but my monitor is 240hz

I have already switched to the display settings, there is a maximum of 120hz. In the windows settings, I can set the resolution to 2560x1440 and only then I will have 240hz, but I need 5120x1440 and 240hz


gpu: Radeon RX 570 Series
cpu: Intel(R) Core(TM) i5-3450 CPU @ 3.10GHz
ram 16gb
monitor: samsung odyssey g9 
DisplayPort v 1.4

AMD software: adrenalin edition version 24.7.1
Windows 10 64bit home

These 2 topics didn't help me
https://community.amd.com/t5/graphics-cards/cant-put-240hz-while-creating-custom-resolution/m-p/6838...
https://community.amd.com/t5/drivers-software/can-t-do-240hz-on-my-monitor/m-p/657744#M186622

grishagrees_0-1722612396306.png

 

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DP v1.4 does support 240Hz but at lower Resolutions.

 

Found this Cabe Tech article explaining about DP 1.4 and 240Hz Resolutions: https://www.cablematters.com/Blog/DisplayPort/does-displayport-1-4-support-240hz

 

Screenshot 2024-08-02 122432.png

 

Note: the above chart shows why when you have your Monitor set for 2560x1440 Resolution, it supports 240Hz.

 

From Wikipedia showing the maximum Resolutions for 5K DP versions:

Screenshot 2024-08-02 123351.png

 

EDIT: You will need a DP version 2.0 or above to get 5k with 1440 hz Resolution.  DP 1.4 Bandwidth does not support 5k at 1440hz bandwidth.

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