Samsung Odyssey G9 Mac M1 5120×1440

This is how to get 5120×1440 on Samsung Odyssey G9 on Mac M1.

I have a 16GB 2020 Mac mini M1 with the Samsung Odyssey G9 ultra-wide 49″ monitor. I bought this USB-C to DisplayPort cable to get the max resolution of 5120×1440 but I had to jump through a few hoops to get there. Here’s how to do it.

These are the simple steps with macOS Big Sur 11.1:

1. The G9 must be set 60Hz, at least initially (Adaptive Sync also needs to be disabled, but I believe changing to 60Hz does this automatically). So yes, that means you cannot use your monitor at 240Hz. So, boo. I don’t use it for gaming, but rather for productivity/dev so I don’t really care about it. If you do, then keep 240Hz and you’ll have to also live with the reduced 3840×1080 resolution. I’ve been able to get it to work with 120Hz but initially set it to 60Hz.

2. Go to System Preferences > Displays and while holding down the OPTION/ALT key, click “Scaled”.

3. Now select the 5120×1440 resolution. Boom.

This is the way.


6 Replies to "Samsung Odyssey G9 Mac M1 5120x1440"

  • André S.
    Mar 22, 2021 (4:54 am)

    Dear Chris,

    Interesting article.

    Is the eye-screen distance the same wherever you look on the screen?
    This is an important issue for me when choosing a curved screen (progressive glasses).


    • Chris Duke
      Mar 22, 2021 (8:11 am)

      It is the most curved monitor you can buy (still, I believe) but the ends of the screen are still definitely further away than the center. I wear reading glasses and it’s perfectly acceptable for me.

  • André S.
    Mar 22, 2021 (8:23 am)

    Many thanks for your feedback :-)


  • Stefano
    Jan 27, 2022 (4:18 am)

    Dear Chris,

    Thank you for this article!

    Do you know if your instructions could be also applied to a MacBook Air M1?

    Kind regards,

  • Zeeshan Jafry
    Jun 18, 2022 (8:11 am)

    Thanks. I still dont get the resolution higher than 3840×1080 even if i hold down the option key. Could it be due to the reason that i am using HDMI instead of d dig display port

  • TurboBMR
    Sep 18, 2023 (8:55 pm)

    Yes, you need a thunderbolt to display port 1.4 cable.

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