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Models with the most samples
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Storage performance
Sequential read
MiB/s · higher is fasterB is 0.04% lower than A
Sequential write
MiB/s · higher is fasterB is 22.08% higher than A
4 KiB random read
MiB/s · higher is fasterB is 9.20% lower than A
4 KiB random write
MiB/s · higher is fasterB is 9.41% higher than A
Configuration details
| Detail | A · iPhone17,5(iPhone17,5) · 128 GB | B · iPhone 14 Plus(iPhone14,8) · 256 GB |
|---|---|---|
| Platform | iOS | iOS |
| Sample count | 286 | 151 |
| Latest measurement | 2026-09-16 | 2026-06-07 |
| Random read IOPS | 9,815 | 8,912 |
| Random write IOPS | 5,765 | 6,308 |
| 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.