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A2115 / 2019 / Processors from 3.0 GHz 6-core i5, up to 3.6 GHz 8-core i9. Released March 19, 2019.

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27” iMac 5K 2019 CPU upgradable Or soldered?

I am looking to buy the 27” iMac 5k 2019 but I can’t find a shred of info on if the CPU is socketed (upgradable) or soldered. Does anyone know?

Thanks! -Zach

Contestado! View the answer Yo también tengo este problema

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I am wondering if this is a possibility as well.

I know you can upgrade the RAM and the Fusion Drive to SSD

no idea about the cpu

HOWEVER, The iMac Pro (2018) Has a socketed cpu so theoretically that could be upgraded. This gives me hope that the 2019 iMac is socketed too.

(I don't have the heart to open my 27 inch iMac (2019))

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I just bought mine today, base model 2019 27” iMac. I will be opening it up tomorrow evening, maybe early Saturday. We will have an answer then!

I’ll post as soon as I’m finished

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Zack make sure you get the correct tools to take the display off and a set or two of tapes to replace them: iMac Intel 27" (2012-2019) Adhesive Strips The kit has what you need.

Here's the procedure to take off the display iMac Intel 27" Retina 5K Display Display Replacement

Unless you have a strong reason to go that deep I would hold off opening it just to look around. Review this set of guides iMac Intel 27" Retina 5K Display (Late 2014 & 2015)

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Thanks Dan!

I already have my iMac opening tools and HDD upgrade kit.

I plan to do the following during surgery:

Upgrade the SSD to 1tb

Upgrade HDD to 8tb

Upgrade CPU to i9 9900k

Then in Post OP I’ll upgrade the ram to 64gb.

Wish me luck!

- Por

Hey, good luck to ya!

- Por

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Solución Elegida

I got a little impatient and decided to open it up today before my SSD arrived.

Good news though! Our thoughts were correct! The CPU is socketed (upgradable) in the 2019 27” iMac. :D

I powered it on and booted up the OS and everything ran smooth as butter with the newly installed i9 9900k.

I just need to get my SSD so I can close it up and start using it.

Thank you everyone for all your input and advice!

Chalk this up as another win for the repair revolution :D

-Zachary

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you Notice any thermal throttling ? I know the iMac pro has a better cooling system compared to the iMac and the i9 is notorious for causing comps to thermal throttling.

Was the cooling sufficient ?

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Thanks again Zach for this very important update.

I have added this update to my post regarding CPU and NVMe upgrades on 2017 and 2019 27-inch iMacs.

https://forums.macrumors.com/threads/ima...

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Hi Zach.

Which 2019 27" base model did you buy to upgrade to i9?

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same question, which model do you have? base 6 core 8500?

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Felix,

That’s very interesting that you are having a HDD fan speed issue.

I also upgraded the HDD to an 8TB Seagate Barracuda and also did not use the OWC sensor and have had zero issues with the fan speeds.

-Zach

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The 27” iMac’s have always had socketed CPU’s. The 21.5” models low end models often had soldered CPU’s

But! You have been limited by the EFI to the CPU’s within the series . So in this case iMac19,1 Series CPU options.

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True but that was also true for the Mac Mini prior to 2018 and then they decided to solder the CPU out of nowhere.

Apple reserves the right to make stupid decisions any time they please.

So sadly, it’s just not a guarantee.

I’m starting to think I’m going to just have to buy one and crack it open myself to find out for certain.

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The MacBook’s & MacBook Air’s are also soldered.

Which is why I limited my answer to iMac’s.

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Yeah, I know.

I was just pointing out that just because something has been one way for so long in the past doesn’t guarantee it will stay that way.

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Hi, can you upgrade the 2019 21.5 iMac with i9 9900k?

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Sorry you can't jump past what the system was designed to support as the systems firmware doesn't support 9th-generation CPU's only 8th-generation CPU's. Besides the 9900k has a TDP 95 W and the 8700 only has TDP 65 W the systems power supply and cooling couldn't support it.

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Have replaced the CPU. 3.7 i5 out and 3.6 i9 in.

iMac does not start?

i5 back in and the iMac goes again?

What could be the problem?

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I’m panning to upgrade my basic model i5-8500 3.0 to i5-9600K (i9 would be great but I don’t think it’s cost effective for me). Any advise?

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Any one knows if it's possible to upgrade the 5k imac 2019 with a i7-8700?

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@flriankell & @gablopez1 & @eze1268 - You are limited to the CPU's the given model offered. Between the TDP and the systems firmwares microcode support has to be able to support the chip.

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Apple keeps all of their product information under wraps, so you'd probably have to obtain that information illegally. However, I'm pretty sure the CPU is socket mounted… I would check just to be sure, but be careful if you decide to check; Apple doesn't have parts available to anyone other than their licensed Apple technicians, so don't break anything.

Good luck.

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Thanks! I’m thinking so too just from previous models but every now and again you get a 2018 Mac mini situation on your hands where apple went rouge and soldered the CPU.

I used to work for apple so I know how tight lipped they can be on “non customer facing” information.

I was just hoping someone had opened one these up to see if it had a CPU socket or not.

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@th3_v1ru5 No problem. Always happy to help. Anyway, a YouTuber named LinusTechTips had an incident where he accidentally broke his iMac Pro while doing a teardown (It's actually pretty interesting, you should definitely check it out). Anyway, in his case the CPU was socketed, so I assume most Macs have that.

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watched LTT on youtube upgrade the RAM and CPU on a iMac Pro

found a link on Cultofmac that shows the CPU being upgradable for the 2017 iMac

the architecture is similar to the iMac pros so I'm almost positive that the 2019 iMac is upgradable for the CPU.

Heres the link:https://www.cultofmac.com/486048/apple-f...

Heres the video of LTT upgrading a iMac pro: https://www.youtube.com/watch?v=WvvBh3CI...

Godspeed you maniac!

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dvluong - an iMac Pro is a different beast under the hood. The older iMac 5K is the more similar system.

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A smart business decision would be for apple to reuse the similar architecture found in older/other product lines to take advantage of their economies of scale. With the iMac being reused it’s clear that’s what they are pursuing.

Thank god Zack confirmed this and our iMacs cpu is upgradable

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Confirmed today, I took apart my 2019 iMac base 6 core 8500.

Upgraded to Samsung 970 EVO Plus 1TB - No Issue with the Latest firmware 2B2QEXM7 released on 2019/5/20.

Upgraded to 12TB Seagate EXOS HDD - Have hdd fan speed issue, did not put the OWC sensor. Use Mac Fan Control as alternative solution.

Upgraded Ram Kingston KHX2666C15S4/16G - No Issue.

The CPU is changeable, not soldered - Not upgraded yet, I'm okay with 8500's performance so far. But I'm sure the CPU is upgradeable.

Update (06/24/2019)

Upgrade is fine, but the photos in https://www.instagram.com/p/BzF7bNoIreS/ seems has thermal sensor for the HDD.

BTW, Zach, what is your normal idle fan speed after upgraded to 8TB HDD? Mine idle speed is about 1600-1700rpm, the fan sound is very noticeable. The lowest fan speed is 1200rpm, and the highest fan speed is 2593rpm from the Mac Fan Control settings.

Thanks

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iMac 27 2019

Can be upgraded to i9-9900kf or i9-9900k

I9-9900kf has better performance.

Can be upgraded from 3.0 base model to 3.7 high end model.

I done it 3 times already.

Remove battery from mother board on 3.0 base model while installing i9-9900kf

After install reinsert battery.

Update (10/26/2019)


here the proof

Block Image

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Are you sure about this? The logicBoard on the iMac 27 2019 i9 model is of TPD 95W, while the base model is 65W, and with different setup, and different heatsink and everything. There is a couple of videos doing the ssd nvme upgrades that shows this.

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I am 100 percent sure, I have done it 3 times, upgrade base model to i9.

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Hey, I did a 9900k upgrade yesterday on my base mode 27" 2019 iMac and while the system does boot it kernel panics either during boot or when in the finder. This was a fairly difficult install, harder than a 12 core Xenon in the 2013 Mac Pro I did early in the year. I am wondering if I need to re-install 10.15 to get different os drivers or firmware updates? I do not think that is an issue though. Tomorrow I am going to pull the OWC nVME ssd and see what happens. Still has the factory 8GB ram so maybe I should swap that also.

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Zach estará eternamente agradecido.
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