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If increased cooling was necessary, Apple would have implemented it.

What historical evidence are you using to make this claim?

Unless this thing is 0 decibels and at ambient temp at 100% cpu and gpu utilization then extra cooling is warranted.

The argument that this machine is designed for general use is invalid because the possible hardware performance of the selected components begs to differ.
 
To save a couple bucks on a connector (that the system board was designed for) and to ensure the end user needs to buy a new iMac if they want more internal storage.


I'm contemplating picking up a new "old stock" 2019 iMac 27" with the 575x video card, just so that I can upgrade in the future
 
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I'm contemplating picking up a new "old stock" 2019 iMac 27" with the 575x video card, just so that I can upgrade in the future

Im delighted to see so many talking about doing the fusion drive to Sata ssd upgrade in this thread,
Seems like most of the time when someone talks about the (relatively simple imo) task of opening the imac to upgrade the spinning sata drive they get shouted down by dorks who say 'ooh thats too hard', 'putting the tape back on is scary' and all that nonsense.
 
Solid upgrade. I’m skeptical of temperatures but these specs finally bring the iMac up to acceptable performance.
 
I'm well aware of the shift to AS, but I'm interested in one of these. I have a late 2013 MBP, and it might not be until late-2023/early-2024 before a 2nd generation large AS iMac is released. (I'm not interested in getting a first-generation model.) [...] I'm not sure I can wait for another 3+ years to upgrade, though. A 2020 iMac would last me until it essentially becomes obsolete because of the software.

I have a late 2013 27" iMac. It still works with all its original parts, but I'm working from home a lot more these days and using the iMac more often than my 2017 Macbook. It can get bogged down and feel sluggish at times, which is now more noticeable due to using it more, and I'm losing macOS upgradeability with Big Sur. I agree with you about not wanting a first-generation AS model. I had the first-ever model 12" Powerbook and it had more problems and logic board failures than any other computer I've owned, Mac or otherwise. I haven't owned a first Apple anything since then.

Although the 21" iMac is clearly going to be replaced with an AS model sooner rather than later, it seems likely to be around a year or so for the 27" to be replaced. I don't want the first one, so that means waiting yet another year or so for the second one. This might even be an optimistic timeline; you could be right that it's more like three years than two. I don't think I want to keep my 2013 for even two more years, let alone three or more.

It also seems that the writing is on the wall for this to be the last iMac with user-accessible RAM. Hopefully by the time I'm ready to buy a AS model, the standard RAM will be more than 8GB and upgrading to a useful amount won't be a complete ripoff.

This won't apply to everyone, but I'm going to need some more tax deductions before the end of the year. I usually have a lot of deductions for car expenses, business meals/entertainment, event sponsorships, conferences/travel, etc, but due to COVID-19, I've spent virtually NOTHING on any of those things this year. So I think I'm okay with dropping money on one of these, taking the write-off, upgrading the RAM myself, and having a nice reliable computer for the next 2-3 years so that I can afford to "wait and see" regarding AS models, any issues, software and developers' responses, etc. I know I won't keep it for seven years like my current one, but that's okay. Maybe I'll need another tax deduction around 2022-2023 when the second AS large-screen iMac is out. Admittedly, we don't know exactly how much the AS transition will affect resale values of Intel models, but a 2020 iMac will still be worth something; it won't be a door stop in two years.
 
Still rocking a late 2012 27 inch 2.9 i5 with 1TB fusion - still works perfectly and has always been silent even when encoding videos.

Have ordered an 8 core i7 512SSD to replace it. Should be a little quicker.
 
There are apparently some poor souls on here that can't read or have very poor comprehension skills. NONE of the new 27" configurations are upgradable.

It is still refreshing to see all the people on here that that think they can run Apple better than the folks that are.
 
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There are apparently some poor souls on here that can't read or have very poor comprehension skills. NONE of the new 27" configurations are upgradable.

It is still refreshing to see all the people on here that that think they can run Apple better than the folks that are.

Upgrades Apple officially supports ≠ upgrades that are physically possible
 
We disagree on “relatively simple”. :) Relatively simple compared to upgrading the RAM in a MBP 16, maybe.

I've done it several times. The only vaguely tricky part is getting the new tape lined up once you're putting it back together, and that isn't actually hard.

If you've never done it, I can see how you'd think it is scary or whatever. But once you actually get a modicum of nerve to do it, you'll realize it's pretty much a breeze.
 
Going to a be an increasingly small market for this “final edition” of the Intel iMac, and deservedly so.
Macs altogether I think sell about 8-10 million a year, 80% of those are mobile. So, it’s a small market anyway.
I've done it several times. The only vaguely tricky part is getting the new tape lined up once you're putting it back together, and that isn't actually hard.
I ONLY have a problem with “relatively simple”. Now, I haven’t been around all that long, but of all the machines I’ve worked on AND talked other folks through working on, none of them required, as a step, that you get the new tape lined up when you put it back together. The majority of them required no tape at all. Some were relatively easier in that the drive’s easier to get to/requires no tools other than your fingers, OR relatively harder because it requires 6 or more special screws or some special tool that you don’t normally have lying around.

Maybe it’s relatively easy among current iMacs or relatively easier compared to shucking a clam, and if that‘s what you mean, then I follow.
 
Thank you for telling me in the headline what a teardown is, because I thought it was going to be destroying a computer. Silly me...
 
Y'all are putting a lot of stock in the Apple silicon devices that have not even been produced yet. Apple has a long track record (IMO) of let downs when it comes to desktops, and computer hardware in general. What makes everyone think the ARM machines are the second coming? Heck, if Apple wants to drive all apps through the app store with a 30% cut of sales, it may limit the software availability of what is already a diminished selection vs Windows anyway.The ARM system will tighten the stranglehold even more with hardware.

I hope to eat crow, but these new, mature iMacs look like a great purchase for now. Since I readily see Apple's dark side, I wonder how these future ARM system will really turn out vs what everyone is hoping they turn out to be. I don't share the confidence of many here.

I'm reading nothing but unicorns and rainbows for Apple silicon vs the current Intel based devices from folks on various forums. I hope it works out, but I am suspicious about Apple's desire to really move forward in computer technology vs further increase in the walled garden and the associated profit margin.
 
Macs altogether I think sell about 8-10 million a year, 80% of those are mobile. So, it’s a small market anyway.

I ONLY have a problem with “relatively simple”. Now, I haven’t been around all that long, but of all the machines I’ve worked on AND talked other folks through working on, none of them required, as a step, that you get the new tape lined up when you put it back together. The majority of them required no tape at all. Some were relatively easier in that the drive’s easier to get to/requires no tools other than your fingers, OR relatively harder because it requires 6 or more special screws or some special tool that you don’t normally have lying around.

Maybe it’s relatively easy among current iMacs or relatively easier compared to shucking a clam, and if that‘s what you mean, then I follow.
Well if applying tape to something is a challenging task in your world I’m guessing we will just have to agree to disagree.
 
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Other than for people who have to run Windows, what exactly is the thing that makes someone buy one of these 2020 iMac 27” computers? If I had to guess, most sales will go to people who don’t know or understand Apple’s shift to their own silicon chips, and simply need / want to buy a new iMac (the classic unwitting consumer). I’m so uninterested in the slight upgrade that I’m not even sure why I’m reading about it now on this forum. I’m holding out for the actual new AS version of the iMac that will undoubtably be better in almost every way.

Because we want to be certain that everything we are currently using will continue to work seamlessly. Including some older software. Me, I still have some bits and pieces in Windows VMs (so will obviously not move my primary computer to AS quite yet). This is a machine to run for the next few years and I'll dip my toe into the AS world if they release something tiny and powerful that is suitable to replace my Macbook, maybe in the next year or so.
 
I have a 2015 iMac 27", and never heard the fan come on once in the entire time I've owned it, and that's using Handbrake, Blender, and most Adobe apps.

My 2017 i7 iMac 21.5" regularly ramps up the fan when I'm using Apple ...
... Numbers.

I have a spreadsheet where it takes about a minute to add a row. Every month I add about 15 rows.
 
Y'all are putting a lot of stock in the Apple silicon devices that have not even been produced yet. Apple has a long track record (IMO) of let downs when it comes to desktops, and computer hardware in general. What makes everyone think the ARM machines are the second coming? Heck, if Apple wants to drive all apps through the app store with a 30% cut of sales, it may limit the software availability of what is already a diminished selection vs Windows anyway.The ARM system will tighten the stranglehold even more with hardware.

I speak as someone who recently just edited a video via LumaFusion on his iPad Pro because for some reason, simply pinching to zoom in iMovie on my 2017 5k iMac was proving to be a laggy affair. Everything was just silky smooth on my iPad Pro.

If Apple can produce such performance on a mobile device which is heat and power constrained, I am excited to see what they can do on a desktop where these limitations are less of a concern.

So rather than speculate on how much better ARM on Macs will be, I am certain that in the very least, performance can’t be any worse. Else, Apple wouldn’t make the switch.

Intel had its chance.

I hope to eat crow, but these new, mature iMacs look like a great purchase for now. Since I readily see Apple's dark side, I wonder how these future ARM system will really turn out vs what everyone is hoping they turn out to be. I don't share the confidence of many here.

I expect to be able to use my 2017 5k iMac for another couple of years. By then, ARM Macs should have matured and I hope to be able to time my next iMac upgrade just right.

I'm reading nothing but unicorns and rainbows for Apple silicon vs the current Intel based devices from folks on various forums. I hope it works out, but I am suspicious about Apple's desire to really move forward in computer technology vs further increase in the walled garden and the associated profit margin.

It’s probably a little bit of both.
 
The complaint about its case styling is so dumb, as its appearance with that great screen is WHY people buy them, and I know, as I have two older models still going strong, BUT, this 2020 iMac 27" is completely obsolete as from the SSD read write test results I have seen online (around the 2K mark only) the logic board must still be PCIe 3.0!, and ANY recent AMD board at PCIe 4.0 is going to be (and they are!) more than double the read-write speed of this machine. SSDs in AMD machines run over 4200Mb/s write speeds WITHOUT being fitted as raid in a sonnet or something PCIE card. And the benefits of PCIe4.0 extend throughout the motherboards, such that only the Thunderbolt 3 missing from them makes you wish you had a Mac.
My chief reason to upgrade from my old Trashcan 12 core Mac Pro 6,1 is therefore gone, as, if I upgrade my 1Tb SSD (still at a lowly 800Mb/s) I can get to go at 2K as well. And yes, I have checked with OWC, so I may do just that.

What does this mean for us all? Are we all still going to be a generation behind anybody on a PC? Does the welcome T2 chip speed up ALL video encoding and decoding, or only some, some of the time?

LIke a beautiful woman can be rotten and corrupt as a bad Apple on the inside, all of us together could design a far better insides, and heat generation-wise the GPU is quite obviously a laptop cut-down model here. BIG question therefore is whether the 5700XT (vraiment) is what you get in a computer, or is it a laptop version of lesser performance/

I have spent several long days checking these PCs out, and reviews of the 5700XT GPU video card state it uses a fan blower to expel its heated air and still runs hot in a large fan-equipped box, whereas even this model has no fans in the vast spaces where they could be.

When it was announced that they would all have SSDs, I rejoiced, but with a 2014 motherboard like that, what guys, IS the point?
Same here, I also have a Mac Pro (Late 2013) "trashcan" and I really love it (I don´t know why so many people hate it?), it is a beautiful computer (a piece of art) and the processor, the RAM and SSD can be upgraded !!! The machine is also fast and always silent. The only downsize are the graphics cards (mine are the D500s) which can´t be upgraded so I am keeping it as long as possible due I can´t afford the new 2019 model !!!
 
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