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Storage performance
Sequential read
MiB/s · higher is fasterB is 1.37% lower than A
Sequential write
MiB/s · higher is fasterB is 56.62% lower than A
4 KiB random read
MiB/s · higher is fasterB is 43.47% higher than A
4 KiB random write
MiB/s · higher is fasterB is 0.72% lower than A
Configuration details
| Detail | A · iPad Pro 12.9-inch (3rd Generation)(iPad8,5) · 512 GB | B · iPad Air (4th generation) Wi-Fi(iPad13,1) · 64 GB |
|---|---|---|
| Platform | iOS | iOS |
| Sample count | 14 | 212 |
| Latest measurement | 2025-10-30 | 2026-08-25 |
| Random read IOPS | 5,297 | 7,599 |
| Random write IOPS | 4,212 | 4,182 |
| 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.