Just picked up the Dell U4025QW here are my thoughts after 24 hours. (2025)

I have the MBP M3Max 16/40, 48 GB/1 TB. My current monitor was a LG 4K U850 16:9 which has been great but I do a lot of Lightroom/productivity and wanted bigger. My Thoughts:

1. It's big, much bigger than when you see it online or in pics.
2. I'm running it though my single TB4/usb-c cable and getting full 5k2k 120hz 30 bit color
3. Just like with my LG, I have my DDJ-800 mixer plugged into the monitor and it works great.
4. No issues so far, knock on wood, with wake, sleep etc. Everything seems to work. See comment 7 though.
5. Screen is very uniform and nice. I don't bother with HDR unless OLED or mini LED.
6. Its feels like a dual monitor setup but no odd gap and the curve makes it more immersive. I have 2 safaris running side by side.
7. I have not upgraded the FW to the latest version nor have I updated to 14.4 Mac OS as I hear these can cause issues with the usb hubs built into monitors etc. I'll hold off a bit.
8. The color is a bit on the warm side but as advertised seems very accurate for what I do.
9. In a perfect world, i'd prefer to have a 40" 8K micro led monitor that's 1/2 " thin but for now this is as good as it gets as those don't exist yet. Oled is great for gamers but not so much for photography or productivity.
10. It just looks bad ass on my desk with the studio monitors etc. and 120 hz is icing on the cake.

richard371 said:

It’s called scaling. The resolution is 5k2k but it makes text and menus easier to read but still 140 ppi.

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Not sure if you're responding to me? I understand well what scaling is. I'm asking what resolution you're running in that photo?

anthonymoody said:

That image is while running natively at 5k/2k? I ask bc the UI looks big...too big. Like it looks more akin to 3840 x 1620 HiDPI.

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The resolution is 5k2k. The scaling scales it to run at 3840x1620. I run mine at that resolution. It's perfect. I used to have a 38" monitor that ran at a native resolution of 3840x1600. The UI elements are SLIGHTLY bigger on the 40" Dell, but it's tough to tell. 2" more display, 20 more vertical pixels. However the smoothness is super noticeable.

spaceballl said:

The scaling scales it to run at 3840x1620. I run mine at that resolution.

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That makes more sense and is why I asked. I run my 40" at 3840x1620 HiDPI.

dhulke said:

I'm just now learning more about features in monitos, but doesn't 40" at 3840x1620 equate to say the 27" at 5k of a apple studio display? It seems that at this scaled version you can fit just as much stuff on your screen.

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The difference is the aspect ratio. It's the same # of effective pixels but with a widescreen AR you can comfortably fit 3 columns of applications on your screen. On a 27" display you're not really going to do that. Or if you do you'll have very narrow windows for your apps.

anthonymoody said:

The difference is the aspect ratio. It's the same # of effective pixels but with a widescreen AR you can comfortably fit 3 columns of applications on your screen. On a 27" display you're not really going to do that. Or if you do you'll have very narrow windows for your apps.

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Understood. Thank you very much. I'm a coder and I wanted to fit 3 editor screens of 120 characters side by side on a Macbook Pro M1 Max and given these descriptions I think I'm able to.

dhulke said:

Understood. Thank you very much. I'm a coder and I wanted to fit 3 editor screens of 120 characters side by side on a Macbook Pro M1 Max and given these descriptions I think I'm able to.

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Yup that should be no problem, though the actual PPI won't be as high, thus the text not as razor sharp, as on the ASD. That's why 3840x1620 is so important: it runs in HiDPI so it's still reasonably sharp.

anthonymoody said:

Yup that should be no problem, though the actual PPI won't be as high, thus the text not as razor sharp, as on the ASD. That's why 3840x1620 is so important: it runs in HiDPI so it's still reasonably sharp.

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You mean I’m able to get the 3 windows side by side with HiDPI 3840x1620, but it won’t be as sharp as the ASD?

dhulke said:

You mean I’m able to get the 3 windows side by side with HiDPI 3840x1620, but it won’t be as sharp as the ASD?

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Correct. These 40" 5k/2k have a PPI of something like 142. The ASD is 218. The 40" is more than useable IMO, but OTOH if/when they release a monitor this size with a higher PPI I will get one