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Compare storage performance

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

Model A

PM981a NVMe Samsung 512GB

476 GB · Windows

Sample count: 2

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Model B

NVMe Samsung SSD 980

931 GB · Windows

Sample count: 1

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Your comparison

Storage performance

Swap A & B

Sequential read

MiB/s · higher is faster
A PM981a NVMe Samsung 512GB · 476 GB2,886.80
B NVMe Samsung SSD 980 · 931 GB2,884.51

B is 0.08% lower than A

Sequential write

MiB/s · higher is faster
A PM981a NVMe Samsung 512GB · 476 GB1,892.89
B NVMe Samsung SSD 980 · 931 GB2,183.37

B is 15.35% higher than A

4 KiB random read

MiB/s · higher is faster
A PM981a NVMe Samsung 512GB · 476 GB33.16
B NVMe Samsung SSD 980 · 931 GB45.05

B is 35.87% higher than A

4 KiB random write

MiB/s · higher is faster
A PM981a NVMe Samsung 512GB · 476 GB66.48
B NVMe Samsung SSD 980 · 931 GB83.39

B is 25.44% higher than A

Configuration details

DetailA · PM981a NVMe Samsung 512GB · 476 GBB · NVMe Samsung SSD 980 · 931 GB
PlatformWindowsWindows
Sample count21
Latest measurement2023-09-292023-10-08
Random read IOPS8,48911,534
Random write IOPS17,01821,347
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