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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 74.58% lower than A
4 KiB random read
MiB/s · higher is fasterB is 38.06% lower than A
4 KiB random write
MiB/s · higher is fasterB is 29.58% lower than A
Configuration details
| Detail | A · realme RMX3871 · 256 GB | B · vivo V2124 · 128 GB |
|---|---|---|
| Platform | Android | Android |
| Sample count | 11 | 15 |
| Latest measurement | 2026-08-30 | 2025-11-20 |
| Random read IOPS | 10,008 | 6,199 |
| Random write IOPS | 5,962 | 4,199 |
| 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.