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2015 Apple MacBook: IntegrityChecker Verify Hashes
Related: CPU cores, data integrity, diglloydTools, IntegrityChecker, laptop, MacBook, Macs, SSD, USB, USB-C, video
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This is a real world test influenced by both CPU cores and SSD/flash drive speed; IntegrityChecker has few peers in its optimal use of CPU cores, but the 2015 MacBook has only two cores and a slower SSD versus 4 cores for the 2015 MacBook Pro Retina.
The MacBook does relatively well here considering its turtle-slow CPU clock speed of 1.3 GHz: it takes 2.8X as long as the MacBook Pro Retina. Its CPU cores are fully utilized, as are those of the MBPR, but the SSD speed differential gap is not as high since there are so many files to read; this adds some file system latency to the process. Hence 2.8X instead of 4X or so that should be seen with large files (more efficient I/O).
Apple 13.3" MacBook Pro M1 Chip with Retina Display (Late 2020, Space Gray)