iMac 5k logic board swap out and upgrade

[Mark200789]

I still like my 2014 model just fine, but the screen severely ghosts so I was thinking of replacing it. While I was at it I figured why not replace the guts too. Who wouldn’t want 64gb of memory and a 4.2ghz processor? The 2014 and 2017 logic boards are identical in chip, screw hole, and port placement. Is there any reason why I couldn’t just swap these out? At the moment I cant see why not. I mean, maybe the power supply couldn’t cut it with the new board? But I doubt it.

 

[TwoH]

Noticeable differences between the 2017 and 2014 board is the placement of the microphone cable, on the 2017 it is no longer connected to the camera cable, and is placed closer to the chin - so you might not be able to use your internal microphone or camera. The thunderbolt 3 ports are of a different shape to thunderbolt 2, unsure if you'll be able to see these ports in the 2014 case.
The 2014 PSU should be okay with the 2017 board though. But at this point -- why not just buy a 2017 iMac instead?

 

[TheSufle]

imac 2017 can work with 128gb ram

 

[TwoH]

imac 2017 can work with 128gb ram

Pretty sure you're confusing the 2017max ram with max ram for 2019

 

[Mark200789]

Noticeable differences between the 2017 and 2014 board is the placement of the microphone cable, on the 2017 it is no longer connected to the camera cable, and is placed closer to the chin - so you might not be able to use your internal microphone or camera. The thunderbolt 3 ports are of a different shape to thunderbolt 2, unsure if you'll be able to see these ports in the 2014 case.
The 2014 PSU should be okay with the 2017 board though. But at this point -- why not just buy a 2017 iMac instead?

Because a full machine would cost twice as much at the specs I'm looking at, even used and even with the screen included. Plus it would be fun to make. Do you know of any teardowns? iFixit doesn't seem to have them for these machines. As for the the cam and mic, I wonder if specifically getting the 2017 screen housing would fix that. The USB C ports are a different shape from the TB2s, but look to be in the same spot. A little dremeling could probably fix that.

 

[TwoH]

Because a full machine would cost twice as much at the specs I'm looking at, even used and even with the screen included. Plus it would be fun to make. Do you know of any teardowns? iFixit doesn't seem to have them for these machines. As for the the cam and mic, I wonder if specifically getting the 2017 screen housing would fix that. The USB C ports are a different shape from the TB2s, but look to be in the same spot. A little dremeling could probably fix that.

True that it would cost more - but selling the 2014 should cover that price? Either way -- https://www.ifixit.com/Teardown/iMac+Intel+27-Inch+Retina+5K+Display+Teardown/30260 This is the teardown for the 2014/15, ifixit don't have the teardown for the 2017, but it's literally the exact same process except for the microphone cable near the chin of the iMac.
I'd suggest just getting the whole housing of a 2017 model if you can. But I guess you could always buy the 2017 camera, and microphone and attach them to the case, you would have to dremel a little bit on your 2014 where the microphone normally sits on the 2017 though.
Edit: If you do buy the whole 2017 housing, make sure it does come supplied with the camera/microphone

 

[Mark200789]

True that it would cost more - but selling the 2014 should cover that price?

I don't think I can get good money for mine because of the screen ghosting. It's pretty bad.

 

[TwoH]

I don't think I can get good money for mine because of the screen ghosting. It's pretty bad.

Yeah, that's fair, I understand why you wouldn't think people would want it

 

[TheSufle]

Довольно уверен, что вы путаете ram 2017max с max ram для 2019 года
[/ЦИТАТА]

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