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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% higher than A
Sequential write
MiB/s · higher is fasterB is 49.34% higher than A
4 KiB random read
MiB/s · higher is fasterB is 66.06% lower than A
4 KiB random write
MiB/s · higher is fasterB is 11.78% lower than A
Configuration details
| Detail | A · samsung SM-S9180 · 256 GB | B · WDC PC SN530 SDBPMPZ-512G · 476 GB |
|---|---|---|
| Platform | Android | Windows |
| Sample count | 84 | 3 |
| Latest measurement | 2026-03-13 | 2023-03-18 |
| Random read IOPS | 17,097 | 5,802 |
| Random write IOPS | 15,811 | 13,949 |
| 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.