I have an idea to upgrade the CPU& SSD on iMac 27, Mid 2017 (MNE92), should I do it? : r/mac
Amazon.com: OWC SSD Upgrade Kit for 2010 27-inch iMacs, Mercury Electra 500GB 6G SSD, 18" SATA III 6Gbps Data Cable, SSD Power Cable, Installation Tools and iMac Screen Adhesive Tape Set :
How to Install a SSD into an iMac (Retina 5K, 27-inch, 2017) - YouTube