Dell UltraSharp U2720Q

Counter-anecdata: I have 2 Dell U2720Q (Ultrasharp 27") bought in 2021 and they've been great. That said, I've always stuck for Dell's upper-range Ultrasharp (U prefix in models) monitors, being slightly wary of their cheaper series which the S in your S3221QS implies.

Display P3, which is what most good but still cheap monitors support, is very noticeably much bigger than sRGB, i.e. the red of Display P3 looks reasonably pure, while the red of sRGB is unacceptably washed out and yellowish. Adobe RGB was conceived for printing better images and it is not useful on monitors because it does not correct the main defect of sRGB, which is the red. Moreover, if I switch my Dell Display P3 monitor (U2720Q) from 30-bit color to 24-bit color, it becomes obviously worse. So, at least in my experience, 10-bit per color component is always necessary for Display P3 in order to benefit from its improvements, and on monitors there is a very visible difference between Display P3 (or DCI P3) and sRGB. There are a lot of red objects that you can see every day and which have a more saturated red than what can be reproduced by an sRGB monitor, e.g. clothes, flowers or even blood. For distributing images or movies, I agree that the Rec. 2020 color space is the right choice, even if only few people have laser projectors that can reproduce the entire Rec. 2020 color space. The few with appropriate devices can reproduce the images as distributed, while for the others it is very simple to convert the color space, unlike in the case when the images are distributed in an obsolete color space like sRGB, or even Adobe RGB, when all those with better displays are still forced to view an image with inferior quality.

Many good monitors are able to display 30-bit pixels in the Display P3 color space (frequently described as the DCI P3 color space, even if there are small differences between these two color spaces). I have been using only such monitors for more than a decade (e.g. I am still using a pair of relatively cheap Dell U2720Q; now there are newer, better models). However most monitors by default display only 24-bit sRGB colors. Many users never change the default settings, so they never see the full color range of those monitors. An annoying fact is that there are many programs, even expensive professional programs, which come with installers written in Java, and those installers crash whenever they see a 30-bit monitor, regardless of the operating system. As a workaround, it is usually enough to temporarily change the monitor colors to 24-bit during installation, as the actual programs do not care about the color resolution, so they work after installation. Color spaces larger than DCI P3 (e.g. that of Rec. 2020) can currently be displayed only by laser projectors.

I have its older version U2720Q and I am quite content with it, in a multi-monitor setup under Linux, using 30 bit per pixel, and also including a Dell loudspeaker system connected to U2720Q, used for audio via DisplayPort or HDMI. I assume that the upgraded version U2723QE should be only better, with the possible exception of firmware bugs like what was mentioned by the other poster.

I use a pair of Dell monitors with IPS screens (U2720Q and UP2414Q). I always use as background a solid grey (#808080) and there is no noticeable non-uniformity. I have tried now your color (#FF6400) on the U2720Q. Because this color is much brighter, if you look carefully you can see that there are small areas at the corners, especially at the 2 lower corners, with lower brightness. Also the 2 lateral edges have a slightly lower brightness, but the difference from the center is less visible than for the 2 lower corners. However the areas affected are small (maybe a width of about 1/30 or 1/40 of the screen width) and you really have to look with the intention to find non-uniformities. When looking casually at the screen there is no obvious non-uniformity. For emissive displays like CRT or OLED it is easier to achieve uniform brightness over the screen.

I Displayport and power over a single USB-C with my Dell U2720Q. I would recommend a longer cable than the one provided if you want your computer to connect to a usb-c on side that doesn't face the monitor.

That's been my setup for the last decade (currently a pair of U2720Q monitors). macOS unfortunately does a worse job with "font smoothing" when using the monitors vertically, but it's fine. The main downside is that since most people (obviously) use their displays in landscape mode, lots of websites and applications are pretty antagonistic to a tall and thin display. (Spreadsheets are often quite bad, but there are lots of places where people eat up horizontal space for padding or side bars that are suddenly super annoying). There's a bit of a push to larger, ultrawide 5k2k monitors (e.g., Dell's U4021Q or the delayed-by-a-year-not-actually-available LG 40WP95C) but a pair of high resolution 27s is still a lot more pixel density. These bigger ones also tend to have lower brightness, presumably do to power and thermal targets per display.

If you're using an external monitor, it's better to do it on the monitor itself rather than in software. When you do it on the monitor it applies everywhere, even when rebooting or using another OS. When I did it in software (redshift) I noticed it was causing my laptop to overheat. Here's how I do it on Linux with a Dell U2720Q monitor. sudo apt-get -yy install ddcutil # Install ddcutil on Ubuntu sudo modprobe i2c_dev # Load required kernel module # Night - Set brightness to 20% and color temperature to 3000K sudo ddcutil setvcp 10 20 sudo ddcutil setvcp 1a 43 sudo ddcutil setvcp 18 69 sudo ddcutil setvcp 16 100 # Daytime - Set brightness to 50% and color temperature to 6500K sudo ddcutil setvcp 10 50 sudo ddcutil setvcp 1a 100 sudo ddcutil setvcp 18 100 sudo ddcutil setvcp 16 100

I have the M32U. My only gripe is that the colors(DCI-P3 90%) are just not as good as my Macbook or my Dell U2720Q. Otherwise, it has been great, especially with games.