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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% higher than A
Sequential write
MiB/s · higher is fasterB is 22.50% lower than A
4 KiB random read
MiB/s · higher is fasterB is 10.81% lower than A
4 KiB random write
MiB/s · higher is fasterB is 14.86% lower than A
Configuration details
| Detail | A · iPad Air (3rd generation) Wi-Fi(iPad11,3) · 256 GB | B · iPhone 11 Pro Max(iPhone12,5) · 512 GB |
|---|---|---|
| Platform | iOS | iOS |
| Sample count | 31 | 132 |
| Latest measurement | 2026-06-27 | 2026-05-06 |
| Random read IOPS | 5,881 | 5,245 |
| Random write IOPS | 4,662 | 3,970 |
| 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.