2019 27" Ram question

macguru9999

macrumors 6502
Original poster
Aug 9, 2006
304
95
I note the 2019 imac 27 requires 2666mhz pc4 ram. question:
What happens if you put apple ram from the 2017 model (pc4 2400mhz) in the 2019 imac ?
Does it work ? at 2400 ? does the memory controller sort this out or does the machine become crashy ?

cheers
 
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