A fast look contained in the base-level M2 Professional MacBook Professional revealed one thing I wasn’t anticipating to see—or relatively, one thing I used to be anticipating was lacking. Just like the base-model M2 MacBook Air, the base-model of the most recent 14-inch MacBook Professional seems to have fewer NAND chips—at a better capability—than the final era. This ends in SSD learn and write efficiency that’s dramatically decrease than the earlier era.
The bottom M1 and M2 MacBook Air fashions solely provide 256GB of storage. Within the M1 MacBook Air, this storage has been break up between two 128GB Kioxia NAND chips. When Apple moved to the M2, they switched to newer NAND chips that provided 256GB of storage per chip. This meant that the bottom mannequin M2 MacBook Air, with solely 256GB of storage, solely had a NAND chip and the efficiency of the SSD was affected because of this.
Just like the M1 Air, the M1 Professional’s 512GB of storage was break up throughout 4 128GB NAND chips. Within the iFixit teardown, they present two 128GB NAND chips on one facet of the board and two extra 128GB NAND chips on the opposite facet. Just like the M2 Air earlier than it, the M2 MacBook Professional seems to have moved to bigger NAND chips, leading to slower SSD efficiency on the bottom mannequin.
512GB M1 Professional MacBook Professional 512GB M2 Professional MacBook Professional
Given the considerably decrease SSD efficiency in my M2 Professional MacBook Professional, I needed to have a look inside to substantiate why. Whereas the M1 Professional 512GB MacBook Professional had two NAND chips seen on the entrance of the motherboard and two on the again, the M2 Professional MacBook Professional solely had one seen on the entrance of the board. There’s most likely a second NAND chip straight reverse the one just like the M1 had.
Whereas the upper storage density of NAND chips is good, it’s at all times disappointing when a product degrades between generations. Fortunately, most individuals gained’t see the results in day-to-day use. Learn and write speeds on the drive are nonetheless extraordinarily quick, so the distinction will possible solely be noticeable in excessive marginal instances.
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