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Storage performance
Sequential read
MiB/s · higher is fasterB is 0.37% lower than A
Sequential write
MiB/s · higher is fasterB is 53.82% lower than A
4 KiB random read
MiB/s · higher is fasterB is 23.75% higher than A
4 KiB random write
MiB/s · higher is fasterB is 51.36% lower than A
Configuration details
| Detail | A · iPhone 11 Pro Max(iPhone12,5) · 64 GB | B · samsung SM-G955U · 64 GB |
|---|---|---|
| Platform | iOS | Android |
| Sample count | 95 | 1 |
| Latest measurement | 2026-08-08 | 2024-08-28 |
| Random read IOPS | 5,266 | 6,517 |
| Random write IOPS | 2,708 | 1,317 |
| 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.