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Storage performance
Sequential read
MiB/s · higher is fasterB is 0.28% lower than A
Sequential write
MiB/s · higher is fasterB is 38.04% higher than A
4 KiB random read
MiB/s · higher is fasterB is 27.51% lower than A
4 KiB random write
MiB/s · higher is fasterB is 39.48% lower than A
Configuration details
| Detail | A · Xiaomi 2509FPN0BC · 512 GB | B · samsung SM-S928U1 · 1024 GB |
|---|---|---|
| Platform | Android | Android |
| Sample count | 48 | 19 |
| Latest measurement | 2026-09-18 | 2024-12-12 |
| Random read IOPS | 23,333 | 16,915 |
| Random write IOPS | 26,753 | 16,190 |
| 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.