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Compare storage performance

Choose two Models, then select Compare. You can compare different storage capacities.

Model A

OnePlus CPH2749

256 GB · Android

Sample count: 2

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Model B

samsung SM-S948W

1024 GB · Android

Sample count: 2

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Your comparison

Storage performance

Swap A & B

Sequential read

MiB/s · higher is faster
A OnePlus CPH2749 · 256 GB3,084.79
B samsung SM-S948W · 1024 GB3,068.62

B is 0.52% lower than A

Sequential write

MiB/s · higher is faster
A OnePlus CPH2749 · 256 GB1,471.70
B samsung SM-S948W · 1024 GB1,794.99

B is 21.97% higher than A

4 KiB random read

MiB/s · higher is faster
A OnePlus CPH2749 · 256 GB98.92
B samsung SM-S948W · 1024 GB103.98

B is 5.12% higher than A

4 KiB random write

MiB/s · higher is faster
A OnePlus CPH2749 · 256 GB108.28
B samsung SM-S948W · 1024 GB139.76

B is 29.07% higher than A

Configuration details

DetailA · OnePlus CPH2749 · 256 GBB · samsung SM-S948W · 1024 GB
PlatformAndroidAndroid
Sample count22
Latest measurement2026-04-092026-09-21
Random read IOPS25,32426,620
Random write IOPS27,72035,779
All capacitiesView 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.

How the tests work · Browse all results