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2019 MacBook Pro 16-inch: SSD Speed vs Transfer Size
Related: 2019 iMac 5K, 2019 MacBook Pro, 4K and 5K displays, computer display, iMac, iMac 5K, laptop, MacBook, MacBook Pro, Macs, SSD
MPG tested the maxed-out $6099 Apple 2019 MacBook Pro 16-inch 2.4 GHz Intel Core i9 / 64GB / 8TB / Radeon Pro 5500M 8GB.
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Many operations require transfer sizes far smaller than those needed for peak SSD speed. This test looks at how the SSD performs for sizes from 32K to 512MB.
Results: SSD Speed vs Transfer Size
While the 2019 MacBook Pro offers substantially faster write performance for writes 256K and larger, such operations are much less important (infrequent) compared to read operations, so the iMac 5K is the clear winner for everyday operations, where reads predominate.
These are real world figures through the OS X file system APIs, and thus reflect the performance available to applications.
Solid lines for 2019 MacBook Pro (orange,blue), dotted (red,green) for 2019 iMac 5K.