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The M2 MacBook Pro’s 256GB SSD is only half as fast as the M1 version

in great shape , This is a 2022 13-inch MacBook Pro.

Samuel Axon

The use of the M2 chip is the biggest change on the new 13-inch MacBook Pro compared to the M1 version Apple launched in 2020, but it’s clearly not the only one. YouTubers (via MacRumors) on the Max Tech and Created Tech channels ran speed tests on the 256GB version of the M2 MacBook Pro and found that the SSD’s read and write speeds are 50 percent slower than the 256GB SSD in the M1 MacBook. Supporter.

Continuous disk read speeds using the Blackmagic Disk Speed ​​Test, run by Max Tech, showed a drop from approximately 2,900 MB/s in the M1 MacBook Pro to 1,446 MB/s in the M2 MacBook Pro. Write speeds dropped from 2,215MB/s in the M1 Pro to 1,463MB/s in the M2 Pro, which is a small but still significant drop.

The culprit appears to be the NAND Flash configuration. Both YouTubers took the bottom of the new MacBook Pro and found that the 256GB versions use only a single 256GB NAND flash chip, while the M1 MacBook Pro uses a pair of 128GB flash chips. On drives with more physical NAND chips, SSD controllers use a process called interleaving to read and write data from multiple physical chips at once. Use fewer chips, and you could limit your peak performance.

While unfortunate for anyone buying the cheapest version of the MacBook Pro, this problem isn’t unique to Apple. Many modern SSDs for PC only offer their maximum rated speeds starting at 1TB or 2TB capacity. high density nand chips can do Raise its maximum capacity, making it possible to fit 4TB of storage in a drive that’s a little bigger than a stick of gum. But the drop in speed at low capacity is an unfortunate side effect of the increased density.

The higher-capacity 512GB and 1TB versions of the new MacBook Pro offer the same SSD speeds as the M1 version, so if you were already springing for more storage, you won’t need to deal with these performance issues. It remains to be seen whether the new M2-equipped MacBook Air will have similar issues at 256GB, although it’s hard to imagine Apple shipping a 256GB Air-branded laptop to a similarly configured Pro-branded laptop. performs better.

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