Hi, I have an iMac (Retina 5K, 27-inch, Mid 2015) running on Big Sur 11.5.2 with 8 GB memory (2x4gb memory cards). It’s slow and clunky ( I run Clean My Mac once a week) so I think I need to add more RAM?
having investigated this on support.apple.com it looks straight forward enough. Do you have any recommendations for memory cards for this machine please? And also can I check if I can mix size of memory cards? So I have two slots free, should I just put another 2 x 4gb cards in or can I put 8s or 16s in and leave the 4 cards where they are? I hope that makes sense?
Many Thanks