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I'm curious--how does the glossy coating on the UP2715K compare to that on the ASD? I have a 27" iMac, whose glossy coating should be similar to the ASD's, and I think it's great. But I've not seen the glossy finish on the Dell. Some complain it doesn't reject reflections as well.

Since you're running both, I'd be interested to hear your opinion on how they compare for reflections and for text sharpness.

We should hear soon about the 6k Dell—at least one person on this thread bought one with an expected delivery date of Mon May 15 (yesterday)!
I have no problems with the glossy coating on either the Dell UP2715k or the Apple Studio Display, and I think both screens are brilliant in terms of quality. The Apple Studio Display has the nicer case design, but I don't see much difference in the display quality (in terms of the glossy screen) between the two, which is also very much in favour of the Dell, because one Dell was bought in 2015 and the other in 2017, and I've had the ASD since 2021.
 
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Yeah, I'm wondering if there's some special-casing in Apple's driver somewhere. It's not what I'd expect to see. It does work at the right resolutions with the M1 Max at 60Hz though, just not with the 2019 16" Intel unless you're okay with 30Hz.
Is it always displaying at 8K scaled down to 6K? That's what it looks like in System Information. Maybe I'm misreading it, but I wonder if that is why it's stuck at 30Hz on the older MacBook.

To be more clear: What I wonder is if macOS thinks it is an 8K monitor and creating all of the scaled resolutions with an 8K output that is being scaled down to 6K.
 
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Just out of interest is anyone using the Dell 8K with OS X?!

On the website you can choose from 4K 6K or 8K at 32 inches 😄
 
Just out of interest is anyone using the Dell 8K with OS X?!

There are forum threads where people are using macOS with the Dell UP3218K 8K display. You need a Mac with two TB ports because the display requires dual DisplayPort inputs (one input drives one half of the display).
 
Just out of interest is anyone using the Dell 8K with OS X?!

On the website you can choose from 4K 6K or 8K at 32 inches 😄
I have the Dell UP3218K (7680x4320). It works on Intel and M2 Pro/Max machines with Ventura. It isn't supported on the M1 Pro/Max without major issues though.
 
I have the Dell UP3218K (7680x4320). It works on Intel and M2 Pro/Max machines with Ventura. It isn't supported on the M1 Pro/Max without major issues though.

Wow. Do you see any difference in basic things like text sharpness? I'm not even sure I can tell between 185 ppi and 220ppi, so 275 ppi might even be identical for me.
 
I have no problems with the glossy coating on either the Dell UP2715k or the Apple Studio Display, and I think both screens are brilliant in terms of quality. The Apple Studio Display has the nicer case design, but I don't see much difference in the display quality (in terms of the glossy screen) between the two, which is also very much in favour of the Dell, because one Dell was bought in 2015 and the other in 2017, and I've had the ASD since 2021.
I didn't even know this Dell existed prior to your posts... Presumably the Dell doesn't have a glass sheet over the front, and is it possible that the Dell's off-axis performance is better as a result?

I remember when the first 27" non-Apple WQHD displays came out... using the same panels as the iMacs of the time but without the "thick" front glass - and with accepted differences in anti-glare treatments, the glossy NON-glass displays were surprisingly good optically.
 
Is it always displaying at 8K scaled down to 6K? That's what it looks like in System Information. Maybe I'm misreading it, but I wonder if that is why it's stuck at 30Hz on the older MacBook.

To be more clear: What I wonder is if macOS thinks it is an 8K monitor and creating all of the scaled resolutions with an 8K output that is being scaled down to 6K.
From the bit of research I've done, it sounds like Apple broke DSC (display stream compression) on Intel Macs with Big Sur...and *never* bothered to fix it. With the M1 Max, the Dell display is indicating the use of DSC, but not with the Intel Mac.

If this is true, it's super disappointing and (in some lights) so wrong of Apple to do. They shouldn't be breaking features on a laptop you already have and not being held responsible for fixing them.
 
View attachment 2202514Something tells me the Apple side of this is buggy. Even on the M1Max, where it works, this is what it reports.
Have you tried using it at 3072 x 1728, which would be the default 2:1 scaling?

And is the list of resolutions on the left what MacOS offers in System Preferences, or is that from one of the aftermark display resolution apps, like BetterDisplay? [I don't recognize that interface, but then I'm using Monterey, and maybe Ventura is different.]
 
Is it always displaying at 8K scaled down to 6K? That's what it looks like in System Information. Maybe I'm misreading it, but I wonder if that is why it's stuck at 30Hz on the older MacBook.

To be more clear: What I wonder is if macOS thinks it is an 8K monitor and creating all of the scaled resolutions with an 8K output that is being scaled down to 6K.
It's 8K scaled down to 6K. I doubt the display accepts an 8K timing but it's not impossible - my 4K Acer XV273K can accept 5K, 6K, and 8K30 timings as long as the timing fits in HBR3 link rate without DSC.

It's stuck at 30Hz probably because the GPU doesn't support DSC or macOS is not enabling DSC. Running AllRez on Intel Mac will show if the GPU driver supports DSC and if any modes accepted by macOS use DSC. Catalina might have different behaviour than later macOS versions.

And is the list of resolutions on the left what MacOS offers in System Preferences, or is that from one of the aftermark display resolution apps, like BetterDisplay? [I don't recognize that interface, but then I'm using Monterey, and maybe Ventura is different.]
That's Ventura. I don't think Better Display or any other apps have an Arrange option.
 
It's 8K scaled down to 6K. I doubt the display accepts an 8K timing but it's not impossible - my 4K Acer XV273K can accept 5K, 6K, and 8K30 timings as long as the timing fits in HBR3 link rate without DSC.
Based on the user manual, 8k30 isn't listed as a display mode. However, even if 8k30 isn't a display mode, could it potentially accept 8k30 as an input timing? Is there a difference between display modes and timings?
1684363710332.png
 
I've received my U3224KB today, and am noticing that even when I enable HDR in the monitor menu, HDR does not seem to be enabled in OSX.

Has anyone seen HDR enabled in OSX? Can you play HDR content from Youtube or Netflix?
 
Based on the user manual, 8k30 isn't listed as a display mode. However, even if 8k30 isn't a display mode, could it potentially accept 8k30 as an input timing? Is there a difference between display modes and timings?
There are different kinds of display modes.

The timing affects the number (resolution) and rate (pixel clock) of pixels output from the GPU.

A scaled mode scales a framebuffer up or down to the size of the output timing's resolution.

I can output an 8K30 timing to my XV273K. The display scales it down to 4K. The pixel clock is 1020 MHz (CVT-RB2) so HBR3 link rate is required (allows up to 8bpc; 10bpc would require ≤ 25Hz).
Or I can output an 8K scaled mode to my XV273K. The GPU scales the 8K framebuffer down to the 4K resolution of the output timing. 4K60 uses a pixel clock of 533MHz (CVT-RB) so only HBR2 link rate is required (allows 10bpc).
 
I think Youtube has HDR content. Try looking for some sample HDR movies. Not sure if you should use Safari or Chrome.
I have another HDR display and can play HDR content on my MBP screen, so I'm aware of how to play HDR content. My U3224KB doesn't seem to be able to play HDR content.
 
I have another HDR display and can play HDR content on my MBP screen, so I'm aware of how to play HDR content. My U3224KB doesn't seem to be able to play HDR content.
The AMA post on Reddit noted that HDR works only over HDMI. (Maybe DP as well? The reviewer only mentioned HDMI.)

 
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