You can make a difference in the Apple Support Community!
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
I have an iMac18,3, Quad-Core Intel Core i5, with two 4 GB DDR4 SO-DIMM 2400 MHz installed. Can I add a 16GB OWC Memory Upgrade Module
PC19200 DDR4 2400MHz SO-DIMM, and a 32.0GB 2400MHz DDR4 PC4-19200 SO-DIMM in the other two available slots for a total of 56 GB? That would be 4 GB, plus 4 GB, plus 16 GB, plus 32 GB = 56. I believe 64 GB is the max on this iMac. Please advise.
iMac
Installing RAM modules in matched pairs is highly recommended.
What I would do, is order a 2x16GB module upgrade from OWC and run with 40GB, which in-itself a lot of RAM.
Then if you find your system running short, which I doubt, then you can always order another 2x16GB kit.
Installing RAM modules in matched pairs is highly recommended.
What I would do, is order a 2x16GB module upgrade from OWC and run with 40GB, which in-itself a lot of RAM.
Then if you find your system running short, which I doubt, then you can always order another 2x16GB kit.
It is better for the performance to use matched pairs
Thank you for the good advice.
Upgrade iMac with different size RAM memory
