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Models with the most samples
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Storage performance
Sequential read
MiB/s · higher is fasterB is 0.03% lower than A
Sequential write
MiB/s · higher is fasterB is 22.40% lower than A
4 KiB random read
MiB/s · higher is fasterB is 53.69% higher than A
4 KiB random write
MiB/s · higher is fasterB is 61.72% higher than A
Configuration details
| Detail | A · Xiaomi 25069PTEBG · 512 GB | B · samsung SM-F721B · 128 GB |
|---|---|---|
| Platform | Android | Android |
| Sample count | 2 | 4 |
| Latest measurement | 2026-09-16 | 2026-06-24 |
| Random read IOPS | 8,054 | 12,379 |
| Random write IOPS | 7,349 | 11,885 |
| 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.