How do I get 120Hz on a monitor that supports 120Hz 4K but is not showing up on the...

for 120hz you need i think hdmi2.1.

besides connecting the s at 120hz is not going to magically let it run at 120fps, you will be lucky to get 40fps on most games. kills my eyes running so slow.

HDMI 2.1 is only needed if you plan to game at 4K for 120hz , on a 4K 144hz monitor, However there's no gaming monitors available at the moment, that yet has HDMI 2.1, the first HDMI 2.1 monitors that are likely to come in are around the same time as the
Series X (Q4) launch or early 2021 (Q1),

1080p and some 1440p monitors can do 120hz over HDMI 1.4 if it's supported, but best ideally is HDMI 2.0 for 1440p for 120hz,

HDMI 2.0 can do 1080p / 1440p at 120hz and 4K at 60hz,

HDMI 2.1 can do 1080p / 1440p / 4K at 120hz.

For the Xbox Series X, it best to get a 4K TV or monitor that supports 120hz and has HDMI 2.1, to get the full potential out of the Series X.

Hello thanks for responding could you recommend a TV or a monitor for every category that support these setting because i really wanna play at 120hz.

1080p 120hz:

1440p 120hz:

4k 120hz

The Xbox One X supports 120hz only at 1440p and 1080p resolutions. It does not support 120hz at 4k. So unless your TV or monitor supports 1440p resolution (many don't), you will only get 1080p when selecting 120hz.

If you're not able to see 120Hz as soon as you select a higher resolution than 1080p

It's because the port in your monitor doesn't support 4K or 1440p - 120Hz

You may need to get a monitor with a 2.1 port

Hello!

For 4K TVs, I think 120 hz with 2.0 hdmi is the maximum that the system will request. Now, for 8K TVs, 144hz with hdmi 2.1 it is necessary. So do not worry.

Hdmi 2.0 can only support 4K at 60hz or 1440p ( 2K ) at 120hz, Hdmi 2.1 will allow 4K at 120hz.

I'm also hoping that the console has a Displayport 1.4, for 4K at 120hz to use on 4K 144hz monitors