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Storage performance

Swap A & B

Sequential read

MiB/s · higher is faster
A Mac17,13 · 926 GB12,274.78
B Mac17,9 · 1858 GB10,794.97

B is 12.06% lower than A

Sequential write

MiB/s · higher is faster
A Mac17,13 · 926 GB1,943.48
B Mac17,9 · 1858 GB3,532.22

B is 81.75% higher than A

4 KiB random read

MiB/s · higher is faster
A Mac17,13 · 926 GB57.31
B Mac17,9 · 1858 GB50.38

B is 12.09% lower than A

4 KiB random write

MiB/s · higher is faster
A Mac17,13 · 926 GB41.76
B Mac17,9 · 1858 GB42.53

B is 1.83% higher than A

Configuration details

DetailA · Mac17,13 · 926 GBB · Mac17,9 · 1858 GB
PlatformmacOSmacOS
Sample count24
Latest measurement2026-11-062026-09-12
Random read IOPS14,67312,898
Random write IOPS10,69110,887
All capacitiesView Model →View Model →

Results checked · Speeds in MiB/s · About these measurements

Four tests. A clearer comparison.

Compare sequential and 4 KiB random read/write speeds side by side. Every option includes its Model, capacity and platform. You can compare 512 GB with 256 GB, including two capacities of the same Model.

How the tests work · Browse all results