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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 136.90% higher than A
4 KiB random read
MiB/s · higher is fasterB is 12.26% lower than A
4 KiB random write
MiB/s · higher is fasterB is 45.10% lower than A
Configuration details
| Detail | A · iPhone 11(iPhone12,1) · 64 GB | B · iPad Pro 12.9-inch (2nd generation) Wi-Fi + Cellular(iPad7,2) · 512 GB |
|---|---|---|
| Platform | iOS | iOS |
| Sample count | 314 | 10 |
| Latest measurement | 2026-09-19 | 2025-04-28 |
| Random read IOPS | 5,477 | 4,805 |
| Random write IOPS | 2,940 | 1,614 |
| 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.