Answer to "Does the SSD iMac have an SATA connector?"I agree with Dan When I upgraded my iMac 2015 27" 5K, I tried all the possible ways. I replaced the original 3.5 hard drive to Samsung 850 Pro SSD 500GB, installed an external enclosure thunderbolt with same Samsung 850 pro SSD 500GB. And finally installed a PCIe blade SSD. Unless the iMac comes with the PCIe port for the custom blade SSD. Don't bother to open it! Using Black Magic: (1) Original HD was 100 MB/s (2) Updated the internal HD to Samsung Pro 850 SSD was 350-400 MB/s (3) External enclosure with Samsung Pro 850 SSD was 300-400 MB/s (4) PCIe blade SSD was 600-700 MB/s As you can see the enclosure with SSD has only minor difference. but you don't have to open your brand new iMac and having the warranty void.
Answer to "HDD Upgrade/Replacement with SSD?"Hi is it only me? i purchased a cracked iMac 2015 27 inch 5k on the purpose of learn how to replace the screen and at the same time found out that you can upgrade the 3.5 hard drive to SSD so runs faster. well not only that i was able to install a blade apple 256GB SSD and replace the original hard drive with samsung 850 pro SSD 500GB hard drive. everything runs great! NO need of the thermal sensor cable needed. i have been using for 3 months no problem, using iMovie and other video softwares. fan runs normal. i believe saw someone saying that after 2013 iMac you don't need the thermal sensor cable anymore while i was doing research before i started. so i never order one. after replacing the hard drive. everything runs great ! but here is what i found. using the black magic app i tested the 3 possible update storage methods 1) original apple 3.5 hard drive 1T 2) upgrade 3.5 hard drive to 2.5 SSD hard drive (samsung 850 pro 500 GB) 3) install a thunderbolt enclosure with 2.5 SSD hard drive (samsung 850 pro...