Series X - Should I be using 4k @ 60hz or 1440 @ 120hz with VRR?

what i can gather is hdmi 1.4 supports 1080p at 120hz and 1440p at 75hz so it will run with series x but you will be stuck at 1440/60hz most likely.

now if the series x had display port that would solve the issue.

most games will be targeting 60fps on 1440 and 4k anyway on the series x with some varying degree.

Altough the Xbox One X supports 1440 and 120Hz, games are not going to run on 120Hz, console is not prepared for that yet.

So my best advice is to go for 4K HDR if your monitor supports it, and when the Series X is released, you will be able to use 1440/120Hz!

I had the same issue using a Denon hdmi 2.1 AVR. I solved it using VRR with 120hz, but I have a hdmi 2.1 tv and a Series X, not One X. I guess you are stuck with 4k without vrr or full hd 120 and vrr. Another solution is to connect the Xbox directly to the tv and use arc/earc for audio, but One X does not support 4k 120hz, so you are stuck with full hd 120 if you use vrr.

I don't have enough info to confirm if the Series X will be able to run 144hz on a monitor such as the one you have purchased but feel fairly confident that 120hz will be possible since it will be using HDMI 2.1

From what i've read 'HDMI to displayport' adapters are usually limited to 60hz at this point in time as most displays are using HDMI 2.0 so it wouldn't really be worth bothering with as you would still be running 60hz at 1440p as the Xbox One X uses
HDMI 2.0 which will only allow 60hz maximum for 4K or 1440p (1080p/120hz yes, but not 1440p/120hz). Even if your monitor uses HDMI 2.1 it still has to connect to HDMI 2.0 on the console so 120hz would not be possible at 1440p.

Since HDMI 2.0 is what current gen uses 60hz is the optimum setting for 4K and all games are
capped at 30-60fps on the console (also due to the fact that most console users will be connecting to TVs and 60hz is pretty much what most HD/4K TVs are capable of). This should change with the Series X which will have HDMI 2.1 (capable of 120hz)
but seems unlikely that 144hz will be possible on the console. I think the best you could expect is to be able to get 4K/120hz with HDMI 2.1 on the Series X although it is said that it will support up to 8K on TVs/Monitors that are capable.

My recommendation would be to get a monitor that's 4K HDR 120hz as this should be able to get the best of current gen (1440/60hz) and Series X (120hz) without paying extra for 144hz which, as stated in my last reply, would only be useful for Gaming PCs and
not consoles.

Hope this info helps you decide which monitor to go with and has helped in any way to make things a little clearer in regards to why the settings may be working the way they are.

Stay safe and Happy Gaming!

XBA

For all monitors or just this one?. I'm seeing sites saying 1080 and 1440 support for 120hz but 4k is 60hz.