CHF99.–
Samsung M471A4G43MB1-CTD
1 x 32GB, 2666 MHz, DDR4-RAM, SO-DIMM
Question about Samsung M471A4G43MB1-CTD
Is this RAM stick compatible with the iMac 27" 2019? And is it possible to operate the iMac with a total of 3 RAM sticks, i.e. one free slot?
Yes.
In principle, you should install ram bars in pairs, otherwise you will not be able to use the full function, i.e. dual channel. In everyday life, however, you will probably not notice a big difference when doing simple work on the Mac. I would therefore recommend that you take a 2x16 GB kit and install it in addition to the existing memory. The standard 3.0 GHZ iMac takes a maximum of 32 GB RAM, all others with faster processors 64 GB.
In principle, you should install ram bars in pairs, otherwise you will not be able to use the full function, i.e. dual channel. In everyday life, however, you will probably not notice a big difference when doing simple work on the Mac. I would therefore recommend that you take a 2x16 GB kit and install it in addition to the existing memory. The standard 3.0 GHZ iMac takes a maximum of 32 GB RAM, all others with faster processors 64 GB.