Several specialized YouTube channels, links to which are given by the Macrumors website, conducted practical tests of new 13-inch MacBook Pro, built on the basis of the processor (more precisely, system-on-Crystal) of the Apple Silicon M2. In general, tests demonstrate the expected superiority of the next version of the laptop over the previous one - with one small, but for many applications with a significant exception. Namely: the performance of the built-in drive in the MacBook Pro based on the M2 chip is almost half as much as that of its 13-inch predecessor based on M1.

One of the video bloggers cites the following results of the launch of the Blackmagic Disk Speed ​​Test test utility: the established sequential reading speed for last year's 13-inch MacBook Pro with the M1 chip-2900 MB/s, records-2215 MB/s. The corresponding indicators for the laptop under the same name, but already based on the latest M2: 1446 and 1463 MB/s. Both computers are equipped with SSD with a nominal capacity of 256 GB each.

Having opened right in the same video the new 13-inch MacBook Pro, the video blogger found that the drive of this model contains only one Nand chip, while last year’s version of this type of laptop was equipped with a SSD with two 128-gbeits of flash memory chips. A decrease in recording and reading speeds can be almost exhaustively explained by this fact: contemporary semiconductor controllers fully use the advantages of the Nand multi -chip configuration, at the hardware level, which, if possible, the flows of information on both reading and recordings. But if the chip in the drive is one, this focus does not obviously pass.

Recall that the current situation in the NAND market forces the manufacturers of this type of memory to reduce the range and production volumes of flash chips intended for installation in consumer-class devices, including laptops. This reduction concerns mainly the number of microcircuits produced, while their total capacity even continues to grow due to the transition of manufacturers to technological processes, allowing to obtain increasingly multi-layer flash memory. As a result, SSD controllers have to cope with the organization of reading and writing data on the microcircuits of more capacity, so that in the absence of the ability to conduct operations in parallel (when the drive forms at least two, but only one SBIS) there is a logical decrease in the performance of the storage subsystem of storage data.

#MacBook #Apple #SSD #computer #laptop

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