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Thanks for this.

I keep seeing people mention the Dell P2415Q. It would actually be ideal for me as I've already got a 24" monitor, so a 27" inch next to it will be overkill. But this monitor is pretty old and hard to get hold of (and where it is available it's about the same price as a P2721Q). Unfortunately that's about it in terms of 24" 4K options (other than the very very expensive LG Ultrafine). I'm not sure I'd be happy with a QHD resolution otherwise the Dell U2520 would be perfect.

Unless a P2415Q pops up at a great bargain like you found, it'll be the P2721Q or the LG 27UL850 for me.

What was the issue with the stand on the LG monitor?
If you're based in the EU, I can get you in touch with the seller of Dell monitors :)

No issues with the LG stand, - I just find it very unpractical because of its form, - you can't put anything on it or between the legs.
Screen_Shot_on_2021-01-20_at_18_43_43.jpg
 
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So, it should do 60Hz over HDMI, but it needs the newer Firmware. If those were manufactured in 2018 they definitely should be updated already. However I don't really use the HDMI ports (I have a cable plugged in if I need to reboot/update, because the DP is connected via eGPU, but I've only used it once, for about a minute).

I have not calibrated them - I don't do anything even remotely close to colour sensitive. Mine came with a certificate from Dell saying they'd been calibrated at the factory. I plugged them in, they worked, reds look red, blues look blue, etc.

I don't know what that first setting is, so I'm not sure sorry.

I just checked, the preset mode on one was "standard" and the other "custom color" but I couldn't see a difference.

Input Color Format is actually set to RGB on mine.

The brightness varies (I use https://github.com/MonitorControl/MonitorControl/releases to control it from the regular brightness keys). Contrast is at 75% on both.

I had 30 Hz via HDMI and managed to get 60 Hz via USB-C - DisplayPort only. How did you upgrade the firmware by using Mac OS?

Thanks for your reply with the info on what settings you have. If I switch to the RGB mode, the picture looks like this
IMG_20210120_185536.jpg
 
I had 30 Hz via HDMI and managed to get 60 Hz via USB-C - DisplayPort only. How did you upgrade the firmware by using Mac OS?

Thanks for your reply with the info on what settings you have. If I switch to the RGB mode, the picture looks like this
View attachment 1716399
That’s a known problem. The M1 chip doesn’t output the correct color scheme for external monitors. It must stay in YPbPr but this way it doesn’t output the best colors possible.
 
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I suppose that it will cost you close to U2720Q
I'd happily pay it to get the better PPI. I'm not sure how practical it is though, shipping internationally leaves lots of opportunities for damage.

How did you upgrade the firmware by using Mac OS?
I didn't, it's only old versions that don't have it. I looked it up again (like I said, I never use HDMI) - HDMI2.0 is disabled by default, you have to enable it (by disabling DP 1.4 🤷‍♂️): https://www.dell.com/support/kbdoc/...itors-with-hdmi-2-0-that-support-4k-x-2k-60hz

If I switch to the RGB mode, the picture looks like this
I get something similar when I switch to the non-RGB setting.
 
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That’s a known problem. The M1 chip doesn’t output the correct color scheme for external monitors. It must stay in YPbPr but this way it doesn’t output the best colors possible.
I think it depends. My Dell P3421W is stuck in YPrBr 30bit mode regardless of the cable used (usbc-usbc via apple thunderbolt cable, usb-Display port and HDMI (high speed Belkin cable) with my M1 Mac mini. The colours look fine and there doesn't seem to be any chroma subsampling or blurred text (native resolution 3440X1440, 60Hz). However the second monitor (Dell P2319H, native 1980X1080) connected via UBS-C-Display Port reports RGB colour space but reverts to YPrBr with the HDMI cable. I believe the P3421W is a 10bit panel and the P2319H is an 8bit panel, I wonder if that has something to do with it?

It seems the monitor/M1 and connection type play a role, somewhat frustrating and I think Apple needs to clarify this.
 
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I think it depends. My Dell P3421W is stuck in YPrBr 30bit mode regardless of the cable uses (usbc-usbc via apple thunderbolt cable, usb-Display port and HDMI (high speed Belkin cable) with my M1 Mac mini. The colours look fine and there doesn't seem to be any chroma subsampling or blurred text (native resolution 3440X1440, 60Hz). However the second monitor (Dell P2319H, native 1980X1080) connected via UBS-C-Display Port reports RGB colour space but reverts to YPrBr with the HDMI cable. I believe the P3421W is a 10bit panel and the P2319H is an 8bit panel, I wonder if that has something to do with it?

It seems the monitor/M1 and connection type play a role, somewhat frustrating and I think Apple needs to clarify this.
Thanks for the experiment.
Just wondering what happen if you have two identical monitors, one in USB-C, the other in HDMI. Will one be in RGB and the other in YPbPr ? 😅

This is incredibly weird from Apple to recognize displays as “TVs” or whatever else.

Problem is : on LG displays, there are no ways to verify which color scheme they have as input.
 
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I'd happily pay it to get the better PPI. I'm not sure how practical it is though, shipping internationally leaves lots of opportunities for damage.


I didn't, it's only old versions that don't have it. I looked it up again (like I said, I never use HDMI) - HDMI2.0 is disabled by default, you have to enable it (by disabling DP 1.4 🤷‍♂️): https://www.dell.com/support/kbdoc/...itors-with-hdmi-2-0-that-support-4k-x-2k-60hz


I get something similar when I switch to the non-RGB setting.

Awesome! Thank you so much! I followed the provided instruction and now I have 60 Hz via HDMI and... I like the picture even better! :D
 
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Thanks for the experiment.
Just wondering what happen if you have two identical monitors, one in USB-C, the other in HDMI. Will one be in RGB and the other in YPbPr ? 😅

This is incredibly weird from Apple to recognize displays as “TVs” or whatever else.

Problem is : on LG displays, there are no ways to verify which color scheme they have as input.
not too sure, I think I've seen posts with two identical monitors, one in RGB and one in YPrBr, but they may have been another brand and older monitors.
 
After much research, deliberation and flip-flopping between options, I’ve just ordered the LG 27UL850 for £410.

No ETA for delivery yet but hopefully it will this week. Will report back once it’s arrived and I’ve used it.
 
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Nice !!! I can’t wait to see your comments !
It arrived this morning. Very easy to set up, just plugged in the supplied USB-C cable and away you go.

I'm scaling text to 1080p to make it readable, but it's very clear. Noticeably different to my 24" 1080p monitor. But the thing that stands out immediately is how vibrant the colours are compared to my other screen. Everything just seems brighter and more vivid. It's really nice to look at. Though (and this may just be because I've never used either a 4K or a 27" monitor before, or because I'm tired, but I can feel it straining my eyes a little).

Unfortunately I may have a deal-breaking issue. I log in remotely to a Windows machine via VMWare Horizon. The scaling is a mess. Either it runs at 4k (and everything is tiny) or it scales to 1080p (and everything is really really pixelated). Both are completely unusable.

The scaling options in Windows are greyed out, and using the scaling options in VMWare just mess things up. So I'm stuck with using the scaling I'm using in Mac OS, which leads to tiny or blurry...

If I can't get this to work in VMWare I'll have to return it and just get as good 24" 1080p monitor as I can get instead.
 
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I'm looking for a monitor too for my Mini. I had 27" iMac before so I'm uncertain whether to stay at 27" or go up to 32". Either one will probably be 4K, my eyes are not good enough to appreciate the difference in 4K-5K on these sizes...

I've heard good things about 4K at 24", odd to me that it does not work in VMWare. Is there potential that there's driver issues preventing full scaling?
 
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I'm looking for a monitor too for my Mini. I had 27" iMac before so I'm uncertain whether to stay at 27" or go up to 32". Either one will probably be 4K, my eyes are not good enough to appreciate the difference in 4K-5K on these sizes...

I've heard good things about 4K at 24", odd to me that it does not work in VMWare. Is there potential that there's driver issues preventing full scaling?
At the moment I don’t know if the issue is with the Mac, the VMWare Horizon app, or the network machine I’m logging in to. I‘ve logged a call with my organisation’s IT department but I doubt they’ll be able to help as I don’t think any of them use Macs...
 
It arrived this morning. Very easy to set up, just plugged in the supplied USB-C cable and away you go.

I'm scaling text to 1080p to make it readable, but it's very clear. Noticeably different to my 24" 1080p monitor. But the thing that stands out immediately is how vibrant the colours are compared to my other screen. Everything just seems brighter and more vivid. It's really nice to look at. Though (and this may just be because I've never used either a 4K or a 27" monitor before, or because I'm tired, but I can feel it straining my eyes a little).

Unfortunately I may have a deal-breaking issue. I log in remotely to a Windows machine via VMWare Horizon. The scaling is a mess. Either it runs at 4k (and everything is tiny) or it scales to 1080p (and everything is really really pixelated). Both are completely unusable.

The scaling options in Windows are greyed out, and using the scaling options in VMWare just mess things up. So I'm stuck with using the scaling I'm using in Mac OS, which leads to tiny or blurry...

If I can't get this to work in VMWare I'll have to return it and just get as good 24" 1080p monitor as I can get instead.
I've changed the scaling to 'looks like 2560/1440' and VMWare has adopted the same scaling. So the text is at least readable, but it's definitely not using the 4K resolution as it's very pixelated.

If I can't get this to work I'm going to return the monitor and either get a 24" 1080p monitor or go for the Dell U2520D, which is 1440p.

On the Mac, it looks great. The text is smaller than I'm used to, and I'm not used to having so much 'real estate' on screen. So it will change my workflow a little, as full screen apps look a bit ridiculous now! If I do keep this monitor I'm not sure I'll bother hooking up a second screen as I don't think I'd need it.

If anyone is looking for a good IPS 4K monitor for the Mac Mini (and isn't logging into a virtual Windows machine!!), I'd highly recommend the LG 27UL850.
 
Thanks for posting and, please continue sharing your experience with us!

I ordered today Dell U2721DE and BenQ EX2780Q (I was looking at PD2705q as well). Also, I'm going to check Dell U2520D 😁

Will post my thoughts here in the next 2-3 weeks once I get my Mini M1 and all the monitors.

I am looking for a 27 inch USB-C monitor with QHD resolution (I need to use with a Dell XPS laptop with USB-C, my iPad Air 4 with USB-C, and a 2012 Mac Mini with HDMI), and so far have narrowed it down to Dell U2721DE and BenQ PD2705Q - sorry if you've already covered this but did you have a chance to test either of these two monitors?
 
I’ve got a bit further with working out what might be going on with my monitor and VMWare.

It seems that VMware thinks that my ‘scaled resolution‘ is the actual resolution of the display. As I’d been scaling to 1080 or 1440, the Windows network was displaying this as the ‘resolution’, but still zoomed in. (So for example, it would be 1080p, with a 250% zoom, which obviously looked dreadful on a 27” screen).

If I run the Mac in native 4K I can get VMware to display in 4k, and even scale it using the app so it’s big enough to read. It’s only a temporary workaround as I have to keep changing the scale when I go into our leave VMware.

Also, strangely, when I’m in Windows via VMware, the ‘zoom’ option is greyed out and it says ‘a custom scale has been applied’. When I try to remove this (via ‘remove’ and ‘log out’) nothing happens.

Can’t tell if it‘s VMware sucking or Windows sucking here!

I might start a new thread somewhere else about this and not spam this thread as it’s off topic.
 
I’ve got a bit further with working out what might be going on with my monitor and VMWare.

It seems that VMware thinks that my ‘scaled resolution‘ is the actual resolution of the display. As I’d been scaling to 1080 or 1440, the Windows network was displaying this as the ‘resolution’, but still zoomed in. (So for example, it would be 1080p, with a 250% zoom, which obviously looked dreadful on a 27” screen).

If I run the Mac in native 4K I can get VMware to display in 4k, and even scale it using the app so it’s big enough to read. It’s only a temporary workaround as I have to keep changing the scale when I go into our leave VMware.

Also, strangely, when I’m in Windows via VMware, the ‘zoom’ option is greyed out and it says ‘a custom scale has been applied’. When I try to remove this (via ‘remove’ and ‘log out’) nothing happens.

Can’t tell if it‘s VMware sucking or Windows sucking here!

I might start a new thread somewhere else about this and not spam this thread as it’s off topic.
To console you, Citrix Workspace acts the exact same. My laptop is scaled at 150%, and when switching to my 1080p display, everything in the virtualized app is bigger.
 
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As I don't have neither space nor money for a 4K display I chose a FHD instead. Which problems should I be aware of?
I'm currently using an Asus laptop with 1366x768p display so any change I think would be for the better.
You shouldn't have to put down the money for a 4k display unless you want to. A lot of people on here work professionally with images and thus can justify it. A lot of the discussion on here concerning monitors thus is about the best 4k monitors to buy. It's up to you to prioritize your needs. Personally, I'd rather put my limited income toward a better M1 mini and related peripherals. A good 2k monitor at 60 or 75hz fits my needs well. There have been some positive reviews on some of the 27 inch LGs in this range. Some smaller 1080p monitors might be fine, but you can usually fine a good 2k monitor for only about $100 more, so that's a good base to start with.
 
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