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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% higher than A
Sequential write
MiB/s · higher is fasterB is 119.95% higher than A
4 KiB random read
MiB/s · higher is fasterB is 16.31% lower than A
4 KiB random write
MiB/s · higher is fasterB is 36.07% lower than A
Configuration details
| Detail | A · samsung SM-G998B · 512 GB | B · samsung SM-A566B · 256 GB |
|---|---|---|
| Platform | Android | Android |
| Sample count | 16 | 19 |
| Latest measurement | 2024-09-22 | 2026-06-20 |
| Random read IOPS | 10,950 | 9,164 |
| Random write IOPS | 11,141 | 7,122 |
| 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.