I can't get 4k@120hz even though I have the things to support it

Lane Smith · Feb 27, 2024

I can't have 4k@120hz even though I have an Ultra High Speed HDMI Cable and a TV that supports it.

I have an Xbox series s. I looked up why, and I saw my HDMI cable needed to be Ultra High Speed. I bought an Ultra High Speed 48Bbps 4K@120Hz HDMI Cable. My TV can support it, but it says my TV setup doesn't support 4k@120hz.

:)

SwordofWhedon

very few games support 120 Hz on Xbox series S,

What is the make and model of your television?

SwordofWhedon

your TV does not support 120 Hz, and basically no $500.55 inch television would.

The electronics to support 120 Hz is extremely expensive, much more expensive than it is for the marketing jargon that they used to advertise their fake motion smoothing they're referring to as 120. You shouldn't expect any television under about $1300 SRP to support native 120 Hz at large sizes

As you can see from the specifications under panel, it only supports 60 Hz

https://www.tcl.com/us/en/products/home-theater/q6-class/55-class-4k-qled-hdr-google-tv-55q650g

Lane Smith

TCL Q6 QLED Smart 4k Google TV 2023 Model

Frenchy_137

Hi Nursemorph,

Thanks to you I was able to get it to work at 4K with 120hz.

The issue was the guys that configured my TV had set the HDMI mode to EF(Dolby support) and that mode does not seem to support 120hz.

> I changed the mode to Standard and it made things worse so then I changed it back to EF only and voila it worked 4k at 120hz!

Thank you all for your help with this one.

ROBIN H 25

Your TV model doesn't support or have any HDMI 2.1 ports, which is what you need if looking to get 4K at 120hz.

also the TV doesn't have 240hz refresh rate, it's a 240hz motion rate, which is a 120hz refresh rate display but again you can't get the Series X to 4K 120hz unless your TV has HDMI 2.1 ports, without HDMI 2.1 on the TV you'll be limited to 4K 60hz.

I can't get 4k@120hz even though I have the things to support it