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Robdmb

macrumors regular
Nov 5, 2008
246
28
It's a low enough res that using scaling is not a feasible option because everything becomes too big and you get no desktop space.

It will look acceptable, but not as sharp as you might be used to on your Macbook Pro display for example.

Whether you get e.g max refresh rate is anyone's guess.
Thanks. I wouldn't be looking to use scaling - would just run it on its native resolution. I've used a 34" at native on a windows PC at work and like the general size of everything at that resolution.
 

ascender

macrumors 603
Dec 8, 2005
5,021
2,897
Scaled mode always results in blurry text. Then it depends if you can see the blurriness or not, but buying a monitor to use it with a not pixel perfect resolution is not a too good idea.
Scaled mode doesn't always result in blurry text though. I thought it primarily depends on the resolution of the monitor you're using?
 

ascender

macrumors 603
Dec 8, 2005
5,021
2,897
Uktrawide is probably the worst fit for Apple Silicon. It’s both a non-standard resolution and not high-DPI. Wouldn’t recommend it.
A 5K ultra wide like the LG 40WP95C-W is fine with Apple Silicon - because its resolution is high-enough meaning that even in scaled modes, the text will look "retina like".

There was a chart that explained all of this which gets posted a lot but I can't seem to find it just now...
 
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Xiao_Xi

macrumors 68000
Oct 27, 2021
1,627
1,101
There was a chart that explained all of this which gets posted a lot but I can't seem to find it just now...
ppi-chart.png

 

Robdmb

macrumors regular
Nov 5, 2008
246
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ADGrant

macrumors 68000
Mar 26, 2018
1,689
1,059
I was shopping for new external monitors, and I managed to get an amazing discount / deal on a brand new Dell Ultrasharp display, only to be warned not to use it with Mac’s as it has terrible scaling issues.

I have the same problems with my current Samsung 4K display as the letters are small as hell, and I basically have to change the resolution in Mac OS.

So why are ARM Mac’s terrible with external monitors?
The problem is the low resolution 4k display. A 27" display on a Mac should be 5k and a 24" display should be 4.5k. You can then use high dpi mode and everything will be sharp and at a workable size.
 

theorist9

macrumors 68040
May 28, 2015
3,880
3,059
View attachment 2057773
I've always strongly disagreed with this chart. It takes something that is personal taste (UI size) and portrays it as an absolute (good zones vs. the bad zone). Rather, it all depends on your use case and personal preference.

I was perfectly happy using a 4k 27" (163 ppi) at 2:1 scaling, which this chart puts squarely in the bad zone. And the reason I was happy with it is becuase I tend to use apps that take up little UI space (so not much loss of real estate with a larger UI), and the larger UI has the benefit of making it easier for me to more quickly activate scroll bars and buttons, reducing friction when I'm tryin to work rapidly.
 
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leman

macrumors Core
Oct 14, 2008
19,517
19,664
That chart doesn’t make much sense. I have a 32” AOC 4K display at home that works perfectly fine for retina at the typical viewing distance. And I’m very picky with these things.
 

theorist9

macrumors 68040
May 28, 2015
3,880
3,059
There's been a lot of discussion about how MacOS is (compared to Windows) ill-suited for lower-DPI displays. But, at the other end of things, it's also ill-suited to ultra-high DPI displays (compared to Windows).

Consider, for instance, the 280 ppi 8k Dell, which has been out for several years. The Ventura beta apparently supports it (finally). And at 3:1 integer scaling, that would give a super-sharp 32" display with same UI size as a 187 ppi display at 2:1, which would be pretty sweet. However, because HiDPI on MacOS is limited to a 2x framebuffer, 3:1 scaling would result in an undersampled desktop, meaning that beautiful 8k clarity would be wasted. So you'd instead need to run it at 2:1, which would give it a UI size ~25% smaller than that on the Studio and XDR, which many would find too small for a large display.
 
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kasakka

macrumors 68020
Oct 25, 2008
2,388
1,072
I've always strongly disagreed with this chart. It takes something that is personal taste (UI size) and portrays it as an absolute (good zones vs. the bad zone). Rather, it all depends on your use case and personal preference.
I agree. This chart basically says anything that is not integer scaling is "bad" but that's not true. Using non-integer scalable settings is perfectly fine even if it does have a slight hit on image quality. In practice it's not that noticeable. Even on a 5K display I prefer the "one up from 'looks like 2560x1440'" setting for the extra desktop space, which results in a "bad zone" non-integer scaling setting.

That said I do think Apple could improve these non-integer scalable options simply by opting for better scaling, doing post processing, AI-upscaling etc.

But if you think you need a 200+ PPI screen for MacOS then you are just buying into Apple's marketing.
 

gradi

macrumors 6502
Feb 20, 2022
285
156
I'm confused with this statement. Wouldn't the letters be "small as hell" on a Windows PC using 100% scaling too? You'd have to change your scaling to something like 200%, which essentially cuts your resolution in half. (It's still outputting 4k, but looks like 1080p.)
This is a screenshot of a portion of Ease of Access | Display on Windows 10.

4db99c0ad7cb4c67a29d51c269162408.jpeg
 

kasakka

macrumors 68020
Oct 25, 2008
2,388
1,072
The Problem With Using 1440 Screens With a Mac


Why I RETURNED my 4k monitor // MacOS Scaling Explained

These videos mostly parrot the same talking points as the article posted earlier. The second video seems mostly concerned with how his Mac struggles with performance using a 4K screen and he would have the exact same issue with a 5K Apple Studio Display too.

Even on Windows I would not use the "make the text bigger" option as there is no guarantee applications will support this whereas the DPI scaling option is better supported in general and gives you appropriate sized UI as well. A lot of Mac apps also support setting font sizes separately if you want.
 

Canezmd

macrumors regular
Feb 6, 2011
139
426
It's really bad... gotta an M1 MacBook with a dell 32 inch 4k monitor... disaster. Options are HD where everything is gigantic or 4k where everything is invisibly small. 2560x1440 is the ideal resolution but all the text is blurry. Tried all the fixit apps and nothing works. Terrible
 

theorist9

macrumors 68040
May 28, 2015
3,880
3,059
I agree. This chart basically says anything that is not integer scaling is "bad" but that's not true. Using non-integer scalable settings is perfectly fine even if it does have a slight hit on image quality. In practice it's not that noticeable. Even on a 5K display I prefer the "one up from 'looks like 2560x1440'" setting for the extra desktop space, which results in a "bad zone" non-integer scaling setting.

That said I do think Apple could improve these non-integer scalable options simply by opting for better scaling, doing post processing, AI-upscaling etc.

But if you think you need a 200+ PPI screen for MacOS then you are just buying into Apple's marketing.
Actually, the chart is saying something a bit different. Most of the article is arguing that non-integer scaling is unacceptable (this is personal preference, but I do agree with that—I find it causes too much loss in sharpness). What the chart does is to assume integer scaling, and then declare displays good or bad based on the UI size they would have if you were constrained to integer scaling. And it's that assessment with which I disagree. I don't think acceptable UI sizes are limited to what the author deems acceptable.
 
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evertjr

macrumors regular
Oct 24, 2016
242
333
All my problems ended when I bought the official Apple dongle (USB C to HDMI). My Samsung 28" 4k works perfectly, I use it in 1440p mode and I've enabled the samsung smart upscaling to increase sharpness and it looks gorgeous. I've heard they improved the font antialiasing on macOS Ventura.
 

pshufd

macrumors G4
Oct 24, 2013
10,145
14,572
New Hampshire
All my problems ended when I bought the official Apple dongle (USB C to HDMI). My Samsung 28" 4k works perfectly, I use it in 1440p mode and I've enabled the samsung smart upscaling to increase sharpness and it looks gorgeous. I've heard they improved the font antialiasing on macOS Ventura.

I do hope so as it would make for better scaling options in my setup. I just run two 4k monitors at native resolution for now. The other option is to go with a Mac Studio.
 

Basic75

macrumors 68020
May 17, 2011
2,098
2,446
Europe
I was shopping for new external monitors, and I managed to get an amazing discount / deal on a brand new Dell Ultrasharp display, only to be warned not to use it with Mac’s as it has terrible scaling issues.

I have the same problems with my current Samsung 4K display as the letters are small as hell, and I basically have to change the resolution in Mac OS.

So why are ARM Mac’s terrible with external monitors?
macOS is designed for ~110ppi and ~220ppi monitors but I don't see how that depends on ARM or Intel.
 

Canezmd

macrumors regular
Feb 6, 2011
139
426
Just for the record, I switched from HDMI to DisplayPort. Now it's giving me the options below all at HiDPI. It looks perfect now. I guess it was just something with the conversion to HDMI that was causing the MacBook to not recognize these resolutions.

It's a little weird because it was fine using HDMI on the last MacOS; but when I switched to Ventura, I had to switch to DisplayPort to get the same resolution I was using before over HDMI.
Screenshot 2022-09-14 at 9.30.05 AM.png
 

pshufd

macrumors G4
Oct 24, 2013
10,145
14,572
New Hampshire
Just for the record, I switched from HDMI to DisplayPort. Now it's giving me the options below all at HiDPI. It looks perfect now. I guess it was just something with the conversion to HDMI that was causing the MacBook to not recognize these resolutions.

It's a little weird because it was fine using HDMI on the last MacOS; but when I switched to Ventura, I had to switch to DisplayPort to get the same resolution I was using before over HDMI.
View attachment 2062023

I think that it's the resolution support. The USB-C ports support 6K while the HDMI ports only support 4k. My guess is that it uses a 6k buffer to scale the resolution and that it has more limitations with the 4k display ports.
 

technole

macrumors 6502a
Sep 22, 2017
644
732
I think that it's the resolution support. The USB-C ports support 6K while the HDMI ports only support 4k. My guess is that it uses a 6k buffer to scale the resolution and that it has more limitations with the 4k display ports.

Yes, you want to use the natural ports the monitor has like DP/Thunderbolt/USB-C for outbound 4k+ if at all possible not HDMI, just like the 1440 video guy mentioned.
 

pshufd

macrumors G4
Oct 24, 2013
10,145
14,572
New Hampshire
Yes, you want to use the natural ports the monitor has like DP/Thunderbolt/USB-C for outbound 4k+ if at all possible not HDMI, just like the 1440 video guy mentioned.

That's one of the benefits of the M1 Pro and M1 Max. I hope that they do an M2 Pro mini in October.
 
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