I would not recommend doing this as the case on the lower edge will likely hit your heatsink damaging your SSD and/or logic board.
As far a cooling of the SSD the placement of the SSD is not by chance! Being just above the ports where the fresh air enters from the port perforations cools the SSD.
I doubt you’re altering the SSD’s drive cells that frequently to push the thermals beyond what the SSD can handle. If you are you likely have too small an SSD and/or the SSD does not have enough free space so it gets into trouble trying to wear level the cells. Smaller SSD’s need more free space. As an example a 128 to 256 GB SSD needs at least 1/3 of the drive empty and a 512 to 1TB at least 1/4 free. This is only as issue on boot drive SSD’s.
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=== Update (07/21/2019) ===
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@danj Um... What kind of issue? I found many successful reviews of iMac users who has install m.2 ssd with sintech adapter. I'm considering buy 2019 iMac 27inch and 1tb ssd. But apple's original proprietary ssd is too much expensive. At the article you gave to me (ultimate guide blabla), the price of gen 5 1tb ssd is $898. Let me see the price of samsung 970 pro 1tb.... $332? Game is over.
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Ok then, if there is not a critical issue, I'll just buy samsung 970 pro or evo. I'm not milionare.
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Besides, it is much clever to just buy iMac with ssd cto option. Why should I spend my time to spend more money by buying more expensive ssd with taking the risk of breaking the apple care? You know, it is nonsense.
(I've already have original adhesive strip tape which bought from mac repair company. They say there are so many unqualified iMac strip tape that sells in the online market. They said they are using that tape at their repair job, and they've done self testing compare with other tapes. So I trusted it.)
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I found another ifixit link. Oh there is your comment, hi @danj
I would not recommend doing this as the case on the lower edge will likely hit your heatsink damaging your SSD and/or logic board.
As far a cooling of the SSD the placement of the SSD is not by chance! Being just above the ports where the fresh air enters from the port perforations cools the SSD.
I doubt you’re altering the SSD’s drive cells that frequently to push the thermals beyond what the SSD can handle. If you are you likely have too small an SSD and/or the SSD does not have enough free space so it gets into trouble trying to wear level the cells. Smaller SSD’s need more free space. As an example a 128 to 256 GB SSD needs at least 1/3 of the drive empty and a 512 to 1TB at least 1/4 free. This is only as issue on boot drive SSD’s.
=== Update (07/21/2019) ===
@danj Um... What kind of issue? I found many successful reviews of iMac users who has install m.2 ssd with sintech adapter. I'm considering buy 2019 iMac 27inch and 1tb ssd. But apple's original proprietary ssd is too much expensive. At the article you gave to me (ultimate guide blabla), the price of gen 5 1tb ssd is $898. Let me see the price of samsung 970 pro 1tb.... $332? Game is over.
Ok then, if there is not a critical issue, I'll just buy samsung 970 pro or evo. I'm not milionare.
Besides, it is much clever to just buy iMac with ssd cto option. Why should I spend my time to spend more money by buying more expensive ssd with taking the risk of breaking the apple care? You know, it is nonsense.
(I've already have original adhesive strip tape which bought from mac repair company. They say there are so many unqualified iMac strip tape that sells in the online market. They said they are using that tape at their repair job, and they've done self testing compare with other tapes. So I trusted it.)
+
+
I found another ifixit link. Oh there is your comment, hi @danj
I would not recommend doing this as the case on the lower edge will likely hit your heatsink damaging your SSD and/or logic board.
As far a cooling of the SSD the placement of the SSD is not by chance! Being just above the ports where the fresh air enters from the port perforations cools the SSD.
I doubt you’re altering the SSD’s drive cells that frequently to push the thermals beyond what the SSD can handle. If you are you likely have too small an SSD and/or the SSD does not have enough free space so it gets into trouble trying to wear level the cells. Smaller SSD’s need more free space. As an example a 128 to 256 GB SSD needs at least 1/3 of the drive empty and a 512 to 1TB at least 1/4 free. This is only as issue on boot drive SSD’s.
+
+
=== Update (07/21/2019) ===
+
+
@danj Um... What kind of issue? I found many successful reviews of iMac users who has install m.2 ssd with sintech adapter. I'm considering buy 2019 iMac 27inch and 1tb ssd. But apple's original proprietary ssd is too much expensive. At the article you gave to me (ultimate guide blabla), the price of gen 5 1tb ssd is $898. Let me see the price of samsung 970 pro 1tb.... $332? Game is over.
+
+
Ok then, if there is not a critical issue, I'll just buy samsung 970 pro or evo. I'm not milionare.
+
+
Besides, it is much clever to just buy iMac with ssd cto option. Why should I spend my time to spend more money by buying more expensive ssd with taking the risk of breaking the apple care? You know, it is nonsense.
I would not recommend doing this as the case on the lower edge will likely hit your heatsink damaging your SSD and/or logic board.
As far a cooling of the SSD the placement of the SSD is not by chance! Being just above the ports where the fresh air enters from the port perforations cools the SSD.
I doubt you’re altering the SSD’s drive cells that frequently to push the thermals beyond what the SSD can handle. If you are you likely have too small an SSD and/or the SSD does not have enough free space so it gets into trouble trying to wear level the cells. Smaller SSD’s need more free space. As an example a 128 to 256 GB SSD needs at least 1/3 of the drive empty and a 512 to 1TB at least 1/4 free. This is only as issue on boot drive SSD’s.