Hi guys - thought I'd post my list of information I've gathered over the years. Some models aren't included simply because I've forgotten to ever write down their model number but should be easy enough to find online. Perhaps I'll update at some point to include them. I'll try and keep the thread updated if/when new iMacs come out, but no promises.
27"
LM270WQ1 (SD)(F1) - 2012
LM270WQ1 (SD)(F2) - 2013
LM270QQ1 (SD)(A2) - 5k 2014 & Mid 5k 2015
LM270QQ1 (SD)(B1) - Late 5k 2015
LM270QQ1 (SD)(C1) - 5k 2017
LM270QQ1 (SD)(D1) - 5k 2017 iMac Pro
LM270QQ1 (SD)(E1) - 5k 2019
LM270QQ1 (SD)(F1) - 5k 2020
21.5"
LM215WF3 (SD)(D2) - 2013
LM215WF3 (SD)(D5) - 2015 non-retina
LM215UH1(SD)(A1) - 4k Late 2015
LM215UH1(SD)(B1) - 4k 2017 & 2019
24”
LM235UH1 (SD)(C1) - 2021
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Compatibility list - these models will work with each other:
27”
2012 & 2013
2014 & 2015 Mid
2015 Late & 2017 & 2019
2017 pro & 2020
21.5”
2012 & 2013 & 2014 & 2015 2k & 2017 2k
2015 4k is not compatible with other years
2017 4k & 2019
24” (M-series)
2021 & 2023
2024 (Have not tested yet)
—————————
Here are my findings for iMac screens, I'll try to update if I remember any more of my knowledge.
Note:
Some of these LCD swaps between years may require swapping the backlight cable.
Late 2015 5k to 2019 5k are compatible with each other - excluding the iMac Pro.
2014 5k and Mid 2015 5k will work on Late 2015 to 2019.
Late 2015 5k to 2019 5k should not be used on 2014 5k and Mid 2015 5k. (Causes LCD to only display max resolution of 4K)
All non-retina 21.5” are compatible with each other.
4k 2015 is not compatible with 2017/2019 4k and vice versa.
27” 2020 and iMac Pro 2017 LCD are compatible with each other, including the cameras - but won’t get True Tone on the 2020s if using an iMac Pro LCD, this is because you cannot swap the 2020 camera onto a 2017 iMac Pro LCD due to the shapes being different.
2020 and will lose True Tone unless you swap the camera
24” will lose True Tone unless you swap the light sensor.
M4 2024 iMac camera hole is bigger than on the M1 2021 and M3 2023 models
27"
LM270WQ1 (SD)(F1) - 2012
LM270WQ1 (SD)(F2) - 2013
LM270QQ1 (SD)(A2) - 5k 2014 & Mid 5k 2015
LM270QQ1 (SD)(B1) - Late 5k 2015
LM270QQ1 (SD)(C1) - 5k 2017
LM270QQ1 (SD)(D1) - 5k 2017 iMac Pro
LM270QQ1 (SD)(E1) - 5k 2019
LM270QQ1 (SD)(F1) - 5k 2020
21.5"
LM215WF3 (SD)(D2) - 2013
LM215WF3 (SD)(D5) - 2015 non-retina
LM215UH1(SD)(A1) - 4k Late 2015
LM215UH1(SD)(B1) - 4k 2017 & 2019
24”
LM235UH1 (SD)(C1) - 2021
—————————
Compatibility list - these models will work with each other:
27”
2012 & 2013
2014 & 2015 Mid
2015 Late & 2017 & 2019
2017 pro & 2020
21.5”
2012 & 2013 & 2014 & 2015 2k & 2017 2k
2015 4k is not compatible with other years
2017 4k & 2019
24” (M-series)
2021 & 2023
2024 (Have not tested yet)
—————————
Here are my findings for iMac screens, I'll try to update if I remember any more of my knowledge.
Note:
Some of these LCD swaps between years may require swapping the backlight cable.
Late 2015 5k to 2019 5k are compatible with each other - excluding the iMac Pro.
2014 5k and Mid 2015 5k will work on Late 2015 to 2019.
Late 2015 5k to 2019 5k should not be used on 2014 5k and Mid 2015 5k. (Causes LCD to only display max resolution of 4K)
All non-retina 21.5” are compatible with each other.
4k 2015 is not compatible with 2017/2019 4k and vice versa.
27” 2020 and iMac Pro 2017 LCD are compatible with each other, including the cameras - but won’t get True Tone on the 2020s if using an iMac Pro LCD, this is because you cannot swap the 2020 camera onto a 2017 iMac Pro LCD due to the shapes being different.
2020 and will lose True Tone unless you swap the camera
24” will lose True Tone unless you swap the light sensor.
M4 2024 iMac camera hole is bigger than on the M1 2021 and M3 2023 models
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