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Model A1419 / EMC 3070 / Mid 2017 / 3.4, 3.5 or 3.8 GHz Core i5 or 4.2 GHz Core i7 Kaby Lake Processor (ID iMac18,3) / Retina 5K display. Refer to the older iMac Intel 27" Retina 5K Display (Late 2014 & 2015) guides as the system is very similar.

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iMac 2017 27" - i7-7700 possible?


Can I install an Intel Core i7-7700 in an original iMac 5K mid 2017? An i7-7700K would work, but because of the heat I would like a 7700 without K?


Update (05/31/2018)

According to the data sheet, the processors both have an Intel HD 630 graphics card. The current i5-7500 also has an HD630 card.

Apple uses only the K model in the i7. Is the processor recognized without K in the iMac?

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I think you're going at this the wrong way.

How about first figuring out what your issue is. Please run TG Pro and post some output so we can try to see whats really happening.

The performance is not the same with the older CPU: 3.3 GHz Core i5 - 4590 ("Haswell").

Think of it this way... You have two rowers rowing a boat. One is very strong and the other is not. You have each rowing on the different sides the stronger rower will over power the weaker so you end up going in circles instead of a straight line. But if both are matched you get better performance. This is the issue between the two graphic services internal & dedicated.


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Processor specs:

Maybe we need to talk about your heat issue what are you running for apps that is cooking the system? What is the environment you live in (where you run the system)?

I would recommend running a good thermal monitoring app like this one: TG Pro. You’ll want the full version so you can graph the values over time. How about taking a screen snapshot of the main window (make sure you get all of the sensors) and paste it here for us to see when the system is at its high point so we can see what you mean. Voeg afbeeldingen toe aan een bestaande vraag

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I have successfully upgraded my iMac (Retina 5K, 27-inch, 2017) with an Intel i7-7700 and a 2TB Samsung 970 EVO NVME SSD. Please see post below for full details.

Good luck with your upgrade.


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Hey Florian

The process to upgrade the CPU on the newer iMac models is really replacing the Logic Board. Since Apple has made these parts soldered to their Logic Boards for more responsiveness, and faster transfer rates. It is possible, but very costly to complete.

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This model does have a replaceable CPU & RAM. So you don't have to replace the logic board.


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yes it’s possible, I already upgraded My cpu -yesterday-in my mid 2017 27 inch iMac with i7 7700 without the”k” and it works great without issues at all, pls chick image.

No fan noise , just great

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you could have tried 9th gen i5 9600k processor


9th generation won't work on 7th generation logic board


Did the performance improve. I am about to upgrade my i5-7500 for i7-7700. The benchmark test say only about 8% increase. Is it worth it?


For cinebench the score is 1200 over 600 so no, is not a 8% for raw rendering. Also applies to video rendering and any core intensive usage


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Florian Kipper zal eeuwig dankbaar zijn.

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