I would like to update my RAM from 40 Gb to 96 Gb
I have a iMac Retina 5K 27-inch 2020 running BigSur 11.6 with the following RAM:
Slot1: Kingston KCP426SD8/16 16GB
Slot2: Micron 4ATF51264HZ-2G6E3 8GB (original)
Slot3: Kingston KCP426SD8/16 16GB
Slot4: Micron 4ATF51264HZ-2G6E3 8GB (original)
At the moment, the RAM run all at 2133 MHz.
I found this post regarding the lower speed than expected (2133, not 2666 MHz) https://forums.macrumors.com/threads/imac-2020-showing-ram-running-at-2133mhz-but-tech-specs-say-2666.2250601/
Now I wonder if I get 96Gb 2666 MHz if I replace the original RAMs (8Gb) with
A) Kingston KCP426SD8 2x32 Gb
B) Kingston Fury KF426S16IBK2 2x32 Gb
I think A) and B) only differ in CAS latency (19 vs 16). However, https://support.apple.com/en-us/HT201191 does not mention any information about CAS latency and therefore, I am not sure if this has an impact on my desired setting.