iMac RAM upgrade
Is the RAM still upgradeable on the new August 2020 iMacs?
iMac Line (2012 and Later)
Is the RAM still upgradeable on the new August 2020 iMacs?
iMac Line (2012 and Later)
KVBlakely
You likely have your RAM installed incorrectly if you are only getting 2133 speeds. The correct method on 2020 27" iMacs to get all the DIMMS at 2666 speed is to install the original Apple supplied RAM in banks 1 & 2 and the upgraded RAM in banks 3 & 4. I have 40 GB in my 2020 27" iMacs (we have 2 of them) and when the RAM is installed this way all RAM works at 2666. If you need screen shots that show this please let me know.
Glad to hear.
iMac RAM upgrade