Xbox Series X 4K 120FPS not supported on TV, but TV supports 4K 120

I am yet to see a tv that will do 1440 other than a monitor, tv's tend to land 1080p to 4k and the series s wont push all games at 120fps at 1440, if you have 10k to spend you can get a very descent 4k tv and the series x and have plenty of change too.

see i want to upgrade to 8k but i dont see the point at the moment my 4k tv does 120fps so it will be ok for the start of the xbox series x maybe a year or so down the line and 8k starts to be more of a thing i upgrade but at the moment there main focus
is on 4k

I am pretty sure the Series X runs natively at 4K 120 FPS as long as the game supports it. You getting a 1920x1080 FHD monitor is 100% fine. Some developers have opted for a “Performance” mode and a “Quality” mode. So you might get a 1440p game at 120FPS
on the performance mode vs the same game at 4K with 60FPS on the quality mode.

the series s support up to 1440p but to use that resolution you would need a monitor not a tv as most if not all tv's support 1080p or 4k.

series s will upscale to 4k though.

Good day

The Xbox One S doesnt support 4k gaming. Only supports 4k movie viewing.

For 4k gaming you will need to have a Xbox One X and a 4k TV.