YouTubers Max Tech and Created Tech tested the base M2 MacBook Pro with 256GB of storage using Blackmagic’s Disk Speed app. They found that the read and write speeds of the SSD are around 1,450 MB/s. That’s around 50% and 30% slower compared to the 13-series MacBook Pro with the M1 chip and 256GB of storage.
Basic M2 MacBook Pro: One instead of two
When disassembling the new base MacBook Pro with 256 GB memory, it was discovered that the 256 GB module consists only of a NAND flash memory chip. In the previous model, Apple installed two NAND flash memory chips, each with 128 GB. That probably explains why the new model has a slower SSD. Multiple NAND chips in parallel enable faster speeds.
Other tests with the current M2 512 GB model again showed that the memory is about as fast as the M1 predecessor model. Therefore, two NAND flash memory chips seem to be installed there.
It remains exciting: Does the new MacBook Air with the M2 also have slower SSD speeds in the 256 GB memory variant?