Chosen Solution
Greetings all; I purchased a used subject iMac above that has a weak Fusion drive system. What I want to do is replace the SSD blade with a 2 TB version and the hard drive with a 4 TB SSD. In the long run, use the SSD blade as the main macOS drive and the other SSD for data. Which 2 TB SSD blade would work for the iMac and which 4 TB SSD would be most suited for the iMac? I already took care of the RAM. Thank you for your advice.
A 2 TB Apple blade SSD will be quite expensive! I would recommend staying with the 1 TB drive like Samsung SSPOLARIS 1 TB This is the custom Apple SSD. It is by far the fastest drive available. The next choice would be OWC Aura Pro X2 1 TB or if you really need a 2 TB drive OWC Aura Pro X2 2 TB. Keep in mind OWC does not support using this drive due to the complexity in getting to the connector. I can tell you it works just fine in the iMac. Why do you think you need such a large blade SSD when you are planing on adding a second SATA SSD for your data? Remember you’ll use the blade SSD as your boot drive with your apps and really nothing else! The rest of the drive will be used for Virtual RAM, Paging, and depending on your app the scratch space. So depending on your use this is where you need to think how much free space do you really need. I could see someone doing video editing might want more scratch space on the fastest drive the system has but I haven’t seen many people going this far on this system, most use iMac Pro’s as the number of threads this system only offers 8 threads. As for the SATA drive I would go with a Samsung 860 EVO
