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Models with the most samples
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Storage performance
Sequential read
MiB/s · higher is fasterSame measured average
Sequential write
MiB/s · higher is fasterB is 30.22% lower than A
4 KiB random read
MiB/s · higher is fasterB is 62.38% lower than A
4 KiB random write
MiB/s · higher is fasterB is 65.05% lower than A
Configuration details
| Detail | A · samsung SM-S942W · 256 GB | B · vivo V2430A · 512 GB |
|---|---|---|
| Platform | Android | Android |
| Sample count | 1 | 1 |
| Latest measurement | 2026-07-15 | 2025-07-18 |
| Random read IOPS | 25,090 | 9,438 |
| Random write IOPS | 36,088 | 12,613 |
| 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.