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Re:Apple Silicon Macs can't boot from external drive if inte... by brokenmachine on Tuesday November 02, 2021 @06:54PM (#29088616)
I've read that nowadays because they effectively have 8-channel or 16-channel RAM, there would just be too many connections to make them removable.

Imagine 8 DIMMs next to each other, and then fitting that into a laptop form factor.

Re:Apple Silicon Macs can't boot from external drive if inte... by floatboth on Tuesday November 02, 2021 @09:39PM (#29090116)
Channel != DIMM. Many small channels is just how LPDDR works, as opposed to DDR which has one big chungus channel. Well DDR5 has now split it in two. The total number of traces is the same.