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sublunar

macrumors 68020
Jun 23, 2007
2,311
1,680
OP, why don't you consider 2020 iMac 5k from the Apple refurb store? Even the base model at $1299 is a major upgrade over your current machine and should easily last you another decade.
The clock is ticking on software upgrades for the 2020 Intel iMacs. I’m thinking 2026 for last release of fully supported MacOS plus 2 years of additional security upgrades (assuming the understanding of 5 years of software support until the model becomes vintage).

Apple probably won’t be sentimental about Intel iMacs.

If the money is worth it though, the screen is great.
 

sublunar

macrumors 68020
Jun 23, 2007
2,311
1,680
If you reread OP's post they are buying for longevity so IMHO, it's not irrelevant at all, especially considering I forgot to mention the M1 Max comes with double the RAM (32GB vs the 16GB configurations being suggested.) The differences in performance/specifications may seem academic today for some people but they will become more apparent as the years go by. The M1, while an impressive chip, is more than two years old now and there is no doubt the M1 Max will age much better, especially if the OP wants to keep this machine for up to a decade (or even more than 3-4 years).

Honestly I think it's far too early to tell exactly how gaming on Apple Silicon will turn out.
I think the Mac Mini COULD be a good option depending on how it's updated in 2023.
I second the idea of a base 14" MBP if OP wants something midway between an M1 and an M1 Max in terms of horsepower. (BTW why is the 14" MBP "infamous"??? It's a great machine and with the M1 Pro battery life is great)

As I said earlier I also don't understand the whole monitor obsession I'm seeing in this thread. OP doesn't mention having a workflow that requires color accuracy so a cheap 4K 27" screen can fill the "Retina display" role just fine.
It’s infamous in my words because if you’re a non US user who wants more than M1 power and connectivity then it’s a super deal as the international exchange rates haven’t yet caught up with it. If you don’t need portability then the Mac Studio is next best but stocks are limited thanks to supply chain issues.

Both will happily accept an external display.

For light usage and occasional gaming then the MacBook Pro 14 is my pick - especially if you can get it at the refurb store or one of the many regular discounts we see in the US.
 

tstafford

macrumors 6502a
Sep 13, 2022
989
908
macr

I'm in the same boat. I've got a 2019 i9 iMac with a 2 TB SSD and 128 GB RAM. The least expensive AS combo that would replace it would run $6800: $5200 for a 2 TB/128 GB Ultra plus $1600 for a 27" ASD (more if you include AC+, which my iMac has). Plus my own benchmark testing on my workflow (which is mostly SC-CPU performance-dependent) says the speed improvement I'd get would be small.

It doesn't make sense to spend that kind of money unless the performance improvement is striking, and the general rule of thumb is that requires at least a 2x increase in speed (which for me means SC speed). I'm going to wait a few more generations, until AS improves to that point, at which time I should be able to get that much RAM (or close to it) in a (much less expensive) M# Pro or M# Max. [Unless my job decides to pay for it... ;)]
Right on.

Someone said earlier that this is a really good MR thread - and I agree. Healthy debate w/ a lot of valuable experience being shared.

The underlying issue IMO is that the 27" iMacs (particularly Retina) were and still are such great machines. My wife took my 2015 when she created her C19 home office and loves it. (That kicked off a series of attempts by me to rebuild my own set-up. . .) There is no way she would part with it at this point even though it can't support the latest OS. We will continue running it until it no longer gets security updates - that will be the end of it.

Someone commented earlier that an option is a refurb 2020 iMac. That does make some sense. But it is too tough a pill to swallow to buy an Intel Mac at this point. I'd be happy if we owned one because it will likely get OS updates for several more years, but I don't think I could spend money to acquire one.
 

permanoob

macrumors newbie
Dec 27, 2022
12
16
I am in a very similar situation as you, original poster. But imac versus mac studio plus cheap monitor is not a good comparison. Imac is M1 consumer machine perfectly good for most stuff. Studio is pro machine for pro-er stuff. iMac has a display that is the perfect PPI for macOS so that it looks dreamy. Why do you think it is 4.5K? Because at 24 inches that’s about 220 ppi. Monitors need to be close to 220 ppi to make MacOS look and work the best. Why is ASD only a couple inches bigger, but 5K? 220 ppi. And Pro XDR is 32 inches at 6k. 220 ppi. It’s hardware built for their software. If you get any monitor less than 220 ppi it won’t look as good and might drain more processor. To get any monitor at 220 ppi separate to the mac studio will cost you some dough.

So these are two very different set ups and a bunch more money if you want your mac studio set up to look as good as your imac setup. For your uses and preferences, iMac seems the obvious choice.

BUT I will not be buying the iMac because displays work great for much longer than processors. Buying the imac now might last me might last me 5 years before I would upgrade, but the display of that imac will still be good and could last twice that long. A waste. If I buy separate display and comp I can upgrade separately, and a great display will last maybe 10 or 15 years. Maybe. In the long run, buying separate is better for my wallet, comp performance over time, and the earth. Probably.

So I plan on waiting for m2 mac mini and ASDv2 which will be an amazing setup for longevity and upgradability for about the same price as full spec imac. Plus, I will have a bigger screen and better processor than current iMac, assuming both these new things come out in the spring as rumored. Look, I dreamed about the iMac for a while, because it looked so purrrty when it came out. Then I saw it next to an ASD and I was like, holy crap, screw the iMac. Embrace the separateness.

Man, I can’t believe how much of my attention this shiz takes up.
 
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Tyler O'Bannon

macrumors 6502a
Nov 23, 2019
886
1,497
You’re asking about 2 different animals here. If you go with 24” iMac, you’re getting a beautiful 4K display and M1 Mac all in one (plus a keyboard and mouse).

If you get a Studio, you’re getting an M1 Max minimum, spending more, and still don’t have a display or peripherals.

I don’t know your needs or budget, but if the size and power of iMac will suit your needs, that’s definitely the way to go. And if you need the M1 Max or Ultra, well, then you have no choice.
 

EugW

macrumors G5
Jun 18, 2017
14,894
12,863
I’d suspect that total bandwidth is an issue when not running on thunderbolt 3. Remember that the display data has to go down the line too. I won’t do the maths now but imagine 5120 x 2880 x 24 bits per pixel x 60 times per second and then try to squeeze additional bits from a usb hub incorporated into a display while
contending with a webcam too. It kind of explains why there were bandwidth issues with the LG ultra fine monitors back in the day. Didn’t the 4K model only have USB-C?
Somebody with a better understanding of this can comment, but AFAIK it's not "bandwidth" per se, but the number of lanes used in USB-C DisplayPort Alt Mode.

There are 4 lanes available + USB 2.0. The 4 lanes can be utilized to provide USB 3 transmission, but DP Alt Mode takes over those lanes for DisplayPort support. In this case it is using all four lanes, leaving nothing left over for USB 3. That just leaves the remaining USB 2 support.

So why are the MateView's USB-A ports advertised as USB 3? I'm not sure but I'm guessing that's assuming that the computer is connecting at a lower resolution utilizing only two of the four lanes, leaving two available for USB 3 support. However, I tried setting the M1 Mac mini to lower resolutions and it made no difference, the USB ports were still functioning at USB 2 speeds.

I believe the MateView is a DisplayPort 1.2 monitor. I do note that other monitors have different settings for 4K, which allow DisplayPort 1.2 + USB 2 or else DisplayPort 1.4 + USB 3. However, IIRC when I tried the DisplayPort 1.4 + USB 3 setting, the ports were still USB 2 speed, so I'm guessing that means the Mac still needed all four lanes.

But like I said, anyone with a better understanding of these settings, please feel free to comment.
 

theorist9

macrumors 68040
May 28, 2015
3,880
3,060
Right on.

Someone said earlier that this is a really good MR thread - and I agree. Healthy debate w/ a lot of valuable experience being shared.

The underlying issue IMO is that the 27" iMacs (particularly Retina) were and still are such great machines. My wife took my 2015 when she created her C19 home office and loves it. (That kicked off a series of attempts by me to rebuild my own set-up. . .) There is no way she would part with it at this point even though it can't support the latest OS. We will continue running it until it no longer gets security updates - that will be the end of it.

Someone commented earlier that an option is a refurb 2020 iMac. That does make some sense. But it is too tough a pill to swallow to buy an Intel Mac at this point. I'd be happy if we owned one because it will likely get OS updates for several more years, but I don't think I could spend money to acquire one.
The 2019's are a great value at this point, esp if you need large RAM and SSD. Here's an i9 with a 2 TB SSD and 64 GB RAM that just went for $800 on EBay. If you could find one locally at that price on Craig's List, you'd save the shipping and tax:


Or if you find one that's less, but it has a Fusion Drive or small SSD, you can upgrade the SSD on the 2019's (but not the 2020's) (though it requres opening up the machine, so I'd recommend paying an Apple-authorized service center to do it; cost is ~$100.)
 

i486dx2-66

macrumors 6502
Feb 25, 2013
373
417
The underlying issue IMO is that the 27" iMacs (particularly Retina) were and still are such great machines.
This.
It's even harder when the refurb 2020 27" 5k iMac costs $300 less than the Apple Studio Display.
$300 less, for a nearly identical display, with a computer built in too??

The package deal of an M1 Mini + ASD, though technically faster, looks pretty poor in comparsion!
 

sublunar

macrumors 68020
Jun 23, 2007
2,311
1,680
This.
It's even harder when the refurb 2020 27" 5k iMac costs $300 less than the Apple Studio Display.
$300 less, for a nearly identical display, with a computer built in too??

The package deal of an M1 Mini + ASD, though technically faster, looks pretty poor in comparsion!
Let’s be fair, it’s almost parity price wise when you realise that in the U.K. at least there appears to be refurbished apple studio displays too.

Even so, you’re paying the price of an m1 Mac mini on top of a refurbished apple studio display to have a apple silicon iMac type effect, and you still don’t get the mouse or keyboard.

And you can add aftermarket RAM to the Intel model. I’d need to do a closer comparison to see what other differences and similarities there are to be fair.

The trade off is obviously length of MacOS support (Intel iMac support is probably going to be over sooner than apple silicon) and question marks over specific use case scenarios as to whether certain tasks are faster or not.
 

theorist9

macrumors 68040
May 28, 2015
3,880
3,060
Let’s be fair, it’s almost parity price wise when you realise that in the U.K. at least there appears to be refurbished apple studio displays too.

Even so, you’re paying the price of an m1 Mac mini on top of a refurbished apple studio display to have a apple silicon iMac type effect, and you still don’t get the mouse or keyboard.

And you can add aftermarket RAM to the Intel model. I’d need to do a closer comparison to see what other differences and similarities there are to be fair.

The trade off is obviously length of MacOS support (Intel iMac support is probably going to be over sooner than apple silicon) and question marks over specific use case scenarios as to whether certain tasks are faster or not.
If my computing needs (including RAM and SSD size) were modest, I'd wait until spring and get an M2 Mini (or M2 Pro Mini, if they make one) plus an ASD. At the other extreme, if I needed a lot of RAM and SSD, and my budget was constrained, I'd buy a 2019 i9 iMac (e.g., for 64 GB RAM and a 2 TB SSD, you're talking ~$800 for the iMac vs. $4,600 for the Max Studio + SSD) and upgrade to AS when it could no longer run the current OS.

It sounds like the OP is in the former category rather than the latter.
 
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theluggage

macrumors G3
Jul 29, 2011
8,011
8,444
I'd give the Huawei MateView 28.2" a 4/5.
I'd point out that here in the UK it's currently available for £450 and has been as low as £400 (including 20% tax) so as long as you don't go hunting for defects that you wouldn't otherwise notice its end-of-argument value for money, esp if you want a multi display setup. I've got two on my Mac Studio & I'm delighted (but note that to get two on a Mac Mini you'd have to run one at 50Hz via HDMI, but the difference between 50Hz and 60Hz is barely noticeable).

Maybe that calculator is designed for those who only have 20/20 vision
20/20, the original justification of "Retina" and, probably, the original LaserWriter resolution are all connected to the same figure of 1 arc minute (0.00029 radians) as the typical acuity of the human eye based on tests like being able to see the gap in a nearly-circular letter C. That's an angular resolution so (working in radians & assuming the gap is small c.f. the distance) it's the size of the gap divided by the distance. You can work back from that to calculate the smallest visible "gap" for a given viewing distance and then wave your hands and assume that gives you the minimum PPI for "no visible pixels". Double the viewing distance, halve the needed PPI.

At 12 inches (iPhone or printed page) 0.00029 x 12 = ~1/287 > 300ppi is "retina".
At 21" inches (desktop display) 0.00029 x 12 = ~1/164 so > 164ppi is "just" retina.

That was Apple's original justification for calling the iPhone display "retina" and all their other retina displays exceed the criteria - but ultimately its a marketing term and Apple can decide where or where not to stick it.

However, it is a huge, huge hand wave that makes all sorts of simplifying assumptions about a complex subject - even before you get on to all of those people who's vision is either better or worse than 20/20, or second-guessing how close people are going to sit to their screens. You really don't want to get into too much "spurious precision" over whether a display is retina or not.

That said - on a 27" screen 5k is better than 4k, but it's a lot of money for a small improvement. I think people who describe 4k as unusably blurry are being a little bit precious - but it's their money.

I suspect the monitor is fine, but these surveillance experts can be incredibly clever.
Not having a significant portion of the national communications infrastructure depend on Huawei (or any other foreign manufacturer) kit is probably sensible, but putting spy devices in mass market electronics is a lot of risk for very little gain, and it's not like Huawei are the only made-in-China electronic goods we're using - not to mention respectable assembled-by-patriots-in-the-motherland kit with gaping security holes. If Beijing want personal data on Mx Average not-working-with-nuclear-secrets Person they can always just buy it from Google, Amazon, credit reference agencies etc. If you are working on sensitive stuff it's probably a good idea to let your employers choose your kit...

So why are the MateView's USB-A ports advertised as USB 3?
Haven't tested it, but AFAIK they are USB 3: If you use the separate MiniDP or HDMI inputs for video, you can connect the monitor's USB-C input to a USB 3 port on your computer and have it work as a USB 3 hub.

As for the original question:

If you are happy with a non-Apple display then I'd go with a M1 Mini and a display of your choice. If you prefer a high-PPI display, then the 24" iMac will probably give you the best quality display for the price. The Studio is good value for the power you get, but overkill for what you want, and its extra performance is very much dependent on a multi-threaded and/or GPU-heavy workload. I don't think there's any guarantee that the extra "longevity" will make up for the price difference.

The Studio Display is probably the optimum in display quality for any current Mac (ruling out the $6k Pro XDR) but it is hugely expensive.

Ideally wait for an upgraded Mac Mini but there is absolutely no guarantee that one is coming anytime soon.
 
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Gudi

Suspended
May 3, 2013
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The Studio Display is probably the optimum in display quality for any current Mac (ruling out the $6k Pro XDR) but it is hugely expensive.
No! The Liquid Retina XDR Display of the 16" MacBook Pro is the optimum in display quality. The Studio Display is also hugely expensive, given that it is BYOMKM (Bring Your Own Mac, Keyboard and Mouse).
 
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TopToffee

macrumors 65816
Jul 9, 2008
1,070
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I am in the market to replace my 2011 27' iMac. The computer will be used for basic home computing and maybe some gaming.
Dependent upon what sort of gaming you’re talking about, for a machine that will mostly be “basic home computing” I’d say you shouldn’t even be considering the Mac Studio. It would be a massive overspend and waste.

Personally I’d be looking at Mac Mini + Studio Display or MBA + Studio Display.

I doubt you’d see much benefit from the Studio vs one of those two machines, but you’d definitely see the benefit of a good (Apple optimised) display.
 
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DotCom2

macrumors 603
Feb 22, 2009
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No! The Liquid Retina XDR Display of the 16" MacBook Pro is the optimum in display quality. The Studio Display is also hugely expensive, given that it is BYOMKM (Bring Your Own Mac, Keyboard and Mouse).
Yes it is pricey, but given it will probably last 8-10 years maybe not.
 

Gudi

Suspended
May 3, 2013
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Yes it is pricey, but given it will probably last 8-10 years maybe not.
His 2011 iMac is also still usable, but he wants to replace it with a better experience. The same will happen again. In way less than 8 years all Apple displays will have XDR, mini-LED and ProMotion. The Studio Display will not look shiny and new, because it isn't the very best display quality right now. And the Mac Studio will also age quickly. It's only real benefit over the M1 is multi-core performance and that will grow fast with more cores build on ever smaller process nodes (N5 ➞ N3 ➞ N2). A high performance computer (HPC) is only good for a couple of years. And for basic computing needs a 24" iMac can last 8-10 years as well. If 24-inch is too small for you, just wait another year. Apple will release more and bigger iMacs.
 
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i486dx2-66

macrumors 6502
Feb 25, 2013
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Ideally wait for an upgraded Mac Mini but there is absolutely no guarantee that one is coming anytime soon.
😣 for everyone else who is also waiting.

The Mini was a perfect launch device for Apple Silicon - limited scope, lots of space, few physical packaging constraints. But it's painfully obvious that it was risk-reduced, and wasn't optimized during the design phase. Shipping a computer that is half empty with a case larger than it needs to be, with excess cooling capacity that will never be utilized, just isn't Apple's style.

With so much low-hanging fruit, I've basically been waiting for the M2 Mini since the first M1 Mini teardown came out. If they used the extra empty space and cooling capacity in the same chassis size, the M2 Mini could be significantly more powerful than the M1 version. But also, they could leverage the amazing Apple Silicon thermals to create a "mini mini" - a device which would actually be much more conducive to velcroing to the back of a display to create an iMac substitute. We're over a decade past the need for an optical drive, which is what previously defined the footprint of the Mini.

For a long time, I had thought that the M1 Mini being silver, following the space grey of the last-gen Intel units, was evidence that a new complementary higher-tier device was also coming. But now that the Studio has come out, and is also in silver only, it seems that I was wrong and Apple has just decided not to offer space grey computers anymore.
 

EugW

macrumors G5
Jun 18, 2017
14,894
12,863
For those suggesting the M1 Max Mac Studio will have more useful life than a lower spec'd machine, that is a somewhat debatable claim.

The thing is, Macs' lifespans from Apple's point of view are determined by some combination of its release and discontinuation dates. By that measure, it's likely that a 2023 Mac mini will have a longer usable life span than a 2022 M1 Mac Studio, or in the very least just as long... for half the price.

Sure, the Mac Studio has a faster CPU and more RAM, but there are diminishing returns for CPU speed for mainstream users, and M2 will have the 24 GB option if it's really necessary, but it probably isn't necessary for most mainstream users.

IOW, someone who doesn't need the power of the Mac Studio who is getting the Mac Studio just for futureproofing is probably just wasting his or her money.
 
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wilberforce

macrumors 68030
Aug 15, 2020
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Yes it is pricey, but given it will probably last 8-10 years maybe not.
It will "last 8-10 years" in that it will still be functional, but I bet it will be superseded by something better sooner than people may be expecting. It is not exactly cutting edge monitor technology.
 
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DotCom2

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Feb 22, 2009
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It will "last 8-10 years" in that it will still be functional, but I bet it will be superseded by something better sooner than people may be expecting. It is not exactly cutting edge monitor technology.
Of course. Most all tech things gets better over time, but not everyone needs "cutting edge". I have a 27" 5k iMac that is 8 years old and totally gorgeous for my needs.
 

wilberforce

macrumors 68030
Aug 15, 2020
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Of course. Most all tech things gets better over time, but not everyone needs "cutting edge". I have a 27" 5k iMac that is 8 years old and totally gorgeous for my needs.
Yes, I also have a 27" 5K iMac which I like very much, but the point is that the Studio Display is pricey for something that will likely be superseded soon.
 
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EugW

macrumors G5
Jun 18, 2017
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Of course. Most all tech things gets better over time, but not everyone needs "cutting edge". I have a 27" 5k iMac that is 8 years old and totally gorgeous for my needs.
In other words, the Apple Studio Display is using 8 year-old technology.
 

i486dx2-66

macrumors 6502
Feb 25, 2013
373
417
The Studio Display will not look shiny and new, because it isn't the very best display quality right now.
This is key, and it's a bit painful.

Is there any meaningful comparable 5K high-DPI competition? Nope.
But the Studio Display is also only 60Hz and with no variable refresh, has no local dimming, doesn't support HDR, has so-so camera quality, etc... Given that we've had Apple-supplied 27" 5K displays since 2014, they really didn't set the bar particularly high with the Studio Display...
 

Bodhitree

macrumors 68020
Apr 5, 2021
2,085
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I bought my 24” M1 iMac before the Studio launched, but even if I had waited until afterwards I might have bought the same machine. I’ll just run you through my bullet points:

- the iMac has an excellent display, which is difficult to equal (which others have already discussed)
- the built in speakers, mics and webcam keep my desk neat, and I care quite a lot about that
- the aesthetic of the whole setup is better than separates, its nice to own nice things
- its plenty fast enough to do everything I want, I write and I don’t game much
- with 16 GB ram it can do pretty much everything I reckon I might need in the next 8-10 years

A Mac Studio and Studio Display gets you close to the same aesthetic and screen quality, but its also considerably higher cost for computing power that you may not need. Only if you expect to be running more Apple Silicon-native games might it be a good option for you.

As for the 24” screen with white bezels, honestly, after a week I hardly noticed.
 

sublunar

macrumors 68020
Jun 23, 2007
2,311
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Yes, I also have a 27" 5K iMac which I like very much, but the point is that the Studio Display is pricey for something that will likely be superseded soon.

This is key, and it's a bit painful.

Is there any meaningful comparable 5K high-DPI competition? Nope.
But the Studio Display is also only 60Hz and with no variable refresh, has no local dimming, doesn't support HDR, has so-so camera quality, etc... Given that we've had Apple-supplied 27" 5K displays since 2014, they really didn't set the bar particularly high with the Studio Display...
The issue I have with the Apple Cinema Display 27 is the price - as already noted a refurbished base model Intel iMac comes very close to that price and you get a whole computer thrown in with the screen.

It would be more attractive if it did have some form of local dimming, HDR or Pro-Motion but I guess we can't just point to a modern Dell 5k 27 inch display as a more obvious alternative and LG's Ultrafine is fading away.

A Mac Studio and Studio Display gets you close to the same aesthetic and screen quality, but its also considerably higher cost for computing power that you may not need. Only if you expect to be running more Apple Silicon-native games might it be a good option for you.

As for the 24” screen with white bezels, honestly, after a week I hardly noticed.
Would an M2 iMac 24" change the value proposition? Putting an M2 in with the 24" iMac and possibly into a 27" display options might make it interesting.
 

theorist9

macrumors 68040
May 28, 2015
3,880
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20/20, the original justification of "Retina" and, probably, the original LaserWriter resolution are all connected to the same figure of 1 arc minute (0.00029 radians) as the typical acuity of the human eye based on tests like being able to see the gap in a nearly-circular letter C. That's an angular resolution so (working in radians & assuming the gap is small c.f. the distance) it's the size of the gap divided by the distance. You can work back from that to calculate the smallest visible "gap" for a given viewing distance and then wave your hands and assume that gives you the minimum PPI for "no visible pixels". Double the viewing distance, halve the needed PPI.

At 12 inches (iPhone or printed page) 0.00029 x 12 = ~1/287 > 300ppi is "retina".
At 21" inches (desktop display) 0.00029 x 12 = ~1/164 so > 164ppi is "just" retina.

That was Apple's original justification for calling the iPhone display "retina" and all their other retina displays exceed the criteria - but ultimately its a marketing term and Apple can decide where or where not to stick it.

However, it is a huge, huge hand wave that makes all sorts of simplifying assumptions about a complex subject - even before you get on to all of those people who's vision is either better or worse than 20/20, or second-guessing how close people are going to sit to their screens. You really don't want to get into too much "spurious precision" over whether a display is retina or not.
Right, and it's because of this complexity that you need to do experiments involving direct testing on displays rather than merely attempt to make theoretical predictions. The limit of human vision (i.e., the ppi beyond which there really is no perceptible improvement) may be quite a bit beyond "Retina".

See, for instance, Spencer, Lee, et al. "Minimum required angular resolution of smartphone displays for the human visual system." Journal of the Society for Information Display 21.8 (2013): 352-360. [ https://sid.onlinelibrary.wiley.com/doi/full/10.1002/jsid.186 ]

Quoting from that paper: "This study determines an upper discernible limit for display resolution. A range of resolutions varying from 254–1016 PPI were evaluated using simulated display by 49 subjects at 300 mm viewing distance. The results of the study conclusively show that users can discriminate between 339 and 508 PPI and in many cases between 508 and 1016 PPI."

300 mm is 59% of 20", so those correspond to being able to distinguish 200 ppi vs. 300 ppi, and 300 ppi vs 600 ppi, at 20", respectively (same angular resolutions). And for those like me who often lean in closer, to a 15" viewing distance, it's 270 ppi vs. 400 ppi, and 400 ppi vs. 800 ppi.

Of course, this is just one study. But there are others that support >220 ppi for external displays as well. See also:

https://mostly-tech.com/tag/steve-jobs/
https://www.cultofmac.com/173702/why-retina-isnt-enough-feature/

I also wonder how much the aperture ratio matters. I.e., whether a smaller aperture ratio in turn requires a higher ppi. For movie viewing, I much prefer technology like JVC's LCoS, which has an aperture ratio >90%.
That said - on a 27" screen 5k is better than 4k, but it's a lot of money for a small improvement. I think people who describe 4k as unusably blurry are being a little bit precious - but it's their money.
That's a bit of a straw man; I don't recall anyone saying 160 ppi (4k @27") is unusably blurry. I find 160 ppi perfectly usable as an auxiliary (side) monitor, for instance. What I and others are saying is that it's somewhat unconfortable and fatiguing. Like your eye is trying to focus on something that it can't quite make sharp. And you don't want your eyes to be unconfortable for something you're looking at 8+ hours/day. It's kind of like scratchy sheets. You can sleep in them, but it's a bit unpleasant.
Not having a significant portion of the national communications infrastructure depend on Huawei (or any other foreign manufacturer) kit is probably sensible, but putting spy devices in mass market electronics is a lot of risk for very little gain, and it's not like Huawei are the only made-in-China electronic goods we're using - not to mention respectable assembled-by-patriots-in-the-motherland kit with gaping security holes. If Beijing want personal data on Mx Average not-working-with-nuclear-secrets Person they can always just buy it from Google, Amazon, credit reference agencies etc. If you are working on sensitive stuff it's probably a good idea to let your employers choose your kit...
You're right that the chance China would be interested in me personally is miniscule. But China was the prime suspect in a recent mass data breach of personal info. and employement records for US govt. employees (https://www.usnews.com/news/articles/2015/06/05/china-suspected-in-theft-of-federal-employee-records). So it's not black-and-white where either it's nuclear secrets and they're interested, or it's our credit cards and they're not. If you get that kind of mass data, even though none of it is individually classified, it can assist you in assembling meaningful strategic information.

And putting spy devices in mass market electronics seems entirely doable. Just include a back door in the circuit design of every CPU chip companies in your country manufacture. It doesn't add any significant cost, and the circuitry would be buried among the billions of transistors in a modern CPU. The risk is that their existence would be leaked by a mole.
 
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