Question Feasibility of Intel UHD Graphics 630 (apparently Intel 7th-10th gen graphics) and 4k resolution?

[mikeymikec]

Is anyone here using this combination? I encountered this kind of setup yesterday (Intel i5 8600 CPU) and the mouse pointer (USB corded) wasn't super juddery but it wasn't anywhere near as smooth as I would expect for a 60Hz screen. When I first noticed the lack of smoothness I almost wondered if it was running with a standard VGA driver (Win11). I updated the graphics driver (which installed correctly) but it didn't help. In hindsight I should have tried video playback on it but the user wasn't all that interested in whether it could do that OK or not.

 

[thecoolnessrune]

Did you look in the advanced display settings and validate that the monitor is actually negotiating a 60Hz display refresh? This was during the long drought where Intel only had HDMI 1.4 support with DP 1.2. That means HDMI is limited to 4K@30Hz. The only way to get 4K@60Hz in that generation is:

DP 1.2 directly
USB-C with dual stream DP Alt-Mode
DP 1.2 -> HDMI 2.0 active conversion adapter.

For what it's worth I have a 10th gen laptop for work that is working right now with 4K@60, 2x1080P@60, internal 1080P display, so 4 displays total, just fine, so it's definitely doable.

 

[jpiniero]

That means HDMI is limited to 4K@30Hz.

24 Hz according to Ark. So yes that's likely OP's problem.

 

[thecoolnessrune]

24 Hz according to Ark. So yes that's likely OP's problem.

Sloppy terminology on my part. It's 24Hz at 4Kx2K DCI spec (which I don't have any monitors like that). It's 30hz at 4K UHD, 16:9. Apparently at the very edge of those specs every pixel matters 😂

 

[mikeymikec]

Oof, I bet that would explain it.