unified memory

Unified memory is shared between the CPU, GPU, Neural Engine, and hardware video encoding/decoding engines. It's not user-expandable on any of the Apple Silicon Macs. Whatever you order at purchase time is what your Mac will always have.

If you are trying to custom-order 24 GB but the selection is not sticking, I'd suggest contacting the Apple Store for help. I'm not having any problems getting the selection to stick here, although I did not try to proceed beyond the "Review Your Bag" screen.

ginamarie112 Said:

"unified memory: buying a new macbook air and looking to upgrade to more memory. I'm choosing the 24gb option but at checkout it goes back to 8gb. how does this work with unified memory?"

-------

Adding Memory Issue:

Do you get any error messages or popups when this occurs? Provide a screenshot of what you see, using this link: Take a Screenshot - Apple Support. IMPORTANT: Blank out personal info (i.e. names and time) by covering it with red-colored rectangles and such through use of the Photos app. Apple will know nothing your occurrence, if you don't report it to them.

I tried to shop for one with 24 GB, but could not without specific model information. By the way, .we are all other users here and do not work for Apple, so you may need to contact Apple.