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Monitor for new M4 Mac Mini

Hello, I’ve pre-ordered the new M4 Mac Mini, and I’m looking for a suitable monitor within a limited budget. The variety of options available where I live is also restricted.


This is my first Mac device. I’ve always used Windows laptops. I only recently learned that choosing the right monitor was important, and I’m finding it very difficult to figure it all out.


I’ve been researching monitors that would work compatibly with the Mac Mini for hours, and I could really use some help.


I’ve found a monitor that I like and that fits my budget. If I purchase this monitor, can I use it smoothly with the Mac Mini?


LG 27UP650P-W UHD 4K IPS


• Screen resolution: 3840 x 2160

• Connection options: DisplayPort 1.4, 2 x HDMI (2.0), 3.5 mm headphone jack

Posted on Nov 2, 2024 5:03 PM

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10 replies

Nov 3, 2024 3:30 AM in response to Rudegar

Thank you very much for your response. Since I haven't used a Mac device before, I wasn't aware that screen size, resolution, and PPI values of the monitor I’ll purchase are important for proper scaling.


I assumed it would automatically adjust the scaling, just like Windows devices. However, after seeing warnings that I might experience blurry visuals, especially with fonts, if I don't choose the right monitor, I wanted to ask for advice.

Nov 3, 2024 5:01 AM in response to ataeb

FWIW, I have the cheaper brother of that model, 27UP600 (no adjustable stand but other wise the same) on an M1 Mac without any issue at all.


I use it at a Retina mode (HiDPI in the rest of the world) 3008x1692 which to me is a good compromise between desktop size and element and text size and is razor sharp. Note, internally the Mac maintains the screen map at 6K and then scales this to the 4K screen resulting in the "3008x1692 display value". Note that with this methodology the display is actually still receiving 4K data.


Functionally it performs just fine in all other respects.


There is one quirk with any Apple computer and displays that generally you can only adjust display brightness with the monitor with the vast majority of displays and the LG s one of those. I believe there are some work arounds for that but never investigated that since my work requires a constant display brightness.

Nov 3, 2024 5:07 PM in response to ataeb

27" 5K would be ideal – unfortunately, there aren't many monitors with that combination of size and resolution.


I'm using a 27" 4K monitor, running in Retina "looks like 2560x1440" mode (one notch down from "Larger Text"). The Mac draws on a 5K canvas and then downscales that for the 4K panel, so it is taking advantage of the full 4K resolution of the display. There's the same amount of workspace as on a 27" 2560x1440 monitor, but with more detail than an actual 27" 2560x1440 monitor would offer, and less than a 27" 5120x2880 monitor could display.


I can also choose Retina "like 3008x1692" mode, to get a bit more workspace, at the expense of making text and objects smaller. In that mode, the Mac draws on a 6K canvas, then downscales it for the 4K panel. It sounds like even the base M4 Mac mini is capable of running a 3-display setup where the "like 3008x1692" option would be available on the first two displays.

Nov 3, 2024 5:22 PM in response to ataeb

ataeb wrote:

Thank you very much for your response. Since I haven't used a Mac device before, I wasn't aware that screen size, resolution, and PPI values of the monitor I’ll purchase are important for proper scaling.

I assumed it would automatically adjust the scaling, just like Windows devices. However, after seeing warnings that I might experience blurry visuals, especially with fonts, if I don't choose the right monitor, I wanted to ask for advice.

I believe the high-PPI transition is a case where Apple put more effort into maintaining backwards compatibility.


I believe on Windows, you would set the Control Panel resolution for your display to match its native resolution. Then you would set a separate scale factor (e.g., "150%" for a 27" 4K display) to tell applications what to do in terms of sizing things. However, I'm not sure that there is anything in Windows to actually force applications to honor that setting, and in the early days, there were applications that didn't play well on high-PPI displays.


On Macs, Apple set up a system where you have a nominal ("UI looks like") resolution and a drawing canvas that has twice as many pixels in each direction. Retina-aware applications tell macOS that they are Retina-aware and, in return, get to fill in things like photo areas in higher detail. If an application is not Retina-aware, macOS lets it believe that the "UI looks like" "resolution" is the actual resolution. Behind the legacy application's back, macOS modifies drawing requests so that things will still have the "expected" size and placement on the screen – even if they lack the extra detail a Retina-aware application could have provided.


Although virtually all Mac applications today are Retina-aware, changing APIs when you have a huge code base that depends on existing APIs is something that can be very hard to do. I believe this is why Apple continues to use the Retina scaling approach. It works well enough in a practical sense (even if it can be difficult to explain), and the application compatibility pain of changing it would be enormous.

Monitor for new M4 Mac Mini

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