Hi just got a Samsung odyssey g3 monitor for my Xbox series x should I put freesync premium on

Yes you should, and make sure VRR is enabled in the Xbox display settings.

Freesync Premium is a VRR technology (variable refresh rate). In a nutshell, your displays refresh rate is synced to the frame rate of the game you are playing. This means smoother gameplay and no unsightly screen tearing.

I fixxed it by changing my monitor to fps mode and disable freesync premium on the monitor itself. Now I am at 1440p@120hz on xbox series x

It supports FreeSync Premium in both hdmi and display port. Someone in this chat mentioned that the One S only supports FreeSync 2. If that's the case then will the Series X support all versions of FreeSync? I just want to make sure my monitor will be
supported properly when the Series X comes out.

It's Samsung Odyssey G3 F24G3T

I have a Samsung CHG70, it supports 1440P 120hz. If you want HDR you have to set it for freesync on the monitor and turn VRR on the xbox. Im hoping the series x supports 1440P 120hz with HDR on and not having to turn freesync on at all because its only
limited to 80fps i believe.