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Storage performance
Sequential read
MiB/s · higher is fasterB is 0.04% lower than A
Sequential write
MiB/s · higher is fasterB is 33.04% lower than A
4 KiB random read
MiB/s · higher is fasterB is 194.66% higher than A
4 KiB random write
MiB/s · higher is fasterB is 13.35% higher than A
Configuration details
| Detail | A · WDC PC SN530 SDBPMPZ-512G · 476 GB | B · samsung SM-S9180 · 256 GB |
|---|---|---|
| Platform | Windows | Android |
| Sample count | 3 | 84 |
| Latest measurement | 2023-03-18 | 2026-03-13 |
| Random read IOPS | 5,802 | 17,097 |
| Random write IOPS | 13,949 | 15,811 |
| 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.