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Models with the most samples
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Storage performance
Sequential read
MiB/s · higher is fasterB is 13.71% higher than A
Sequential write
MiB/s · higher is fasterB is 44.98% lower than A
4 KiB random read
MiB/s · higher is fasterB is 13.76% higher than A
4 KiB random write
MiB/s · higher is fasterB is 1.79% lower than A
Configuration details
| Detail | A · Mac17,9 · 1858 GB | B · Mac17,13 · 926 GB |
|---|---|---|
| Platform | macOS | macOS |
| Sample count | 4 | 2 |
| Latest measurement | 2026-09-12 | 2026-11-06 |
| Random read IOPS | 12,898 | 14,673 |
| Random write IOPS | 10,887 | 10,691 |
| All capacities | View 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.