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Models with the most samples
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Storage performance
Sequential read
MiB/s · higher is fasterB is 0.53% lower than A
Sequential write
MiB/s · higher is fasterB is 29.03% higher than A
4 KiB random read
MiB/s · higher is fasterB is 12.12% higher than A
4 KiB random write
MiB/s · higher is fasterB is 17.45% higher than A
Configuration details
| Detail | A · iPhone 11 Pro Max(iPhone12,5) · 512 GB | B · iPad Air (3rd generation) Wi-Fi(iPad11,3) · 256 GB |
|---|---|---|
| Platform | iOS | iOS |
| Sample count | 132 | 31 |
| Latest measurement | 2026-05-06 | 2026-06-27 |
| Random read IOPS | 5,245 | 5,881 |
| Random write IOPS | 3,970 | 4,662 |
| 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.