I Bought This 4K Monitor, What Else Do I need For Native 4K?

[Daverich4]

Thanks for that info but believe it or not I find the settings for "Default for Display" to be just perfect. The text is crystal clear and the font size is neither too big or too small. Everything is just right with the default settings.

An easy way to see the extra resolution choices without using the Terminal is to hold down the Option key while clicking on Scaled. It will also show you what resolution the Default setting is on your monitor.

 

[Krevnik]

what about refresh rates ?

For me I'm running 4k fine in HDMI using my M1 Mini but the only option I get even with SwitchRes is 30hz not 60hz. Is USBC to Display port the only solution ?

My monitor is a Samsung 4k business monitor and it works great (RGB, 4K, etc). Except for the refresh rate.

As I said in the post you quoted, HDMI 2.0 supports 4K60, or 4K @ 60Hz. The reason I bring it up is that streaming boxes like the Apple TV, and game consoles like the PS4 (2013) and Xbox One (also 2013) all use it. 4K @ 60Hz was also a requirement to have the bandwidth for 3D 4K @ 24fps, before the 3D TV fad died out. The standard has been in shipping products for nearly a decade now.

My M1 Mac Mini is spitting out 60Hz on my near-4K (3840x1600) UW just fine, and can go up to 85Hz straight from the HDMI port on the M1. I use DisplayPort because it means I can do 120Hz with my UW instead, and let my work laptop use the HDMI port.

However, as I mention, USB-C docks have to share bandwidth from a USB-C port between data and video, or even attempt to support multiple video outputs, meaning many only support 4K @ 30Hz. So be careful there. But without knowing more about your setup, I can't really say for sure why you are having a problem.