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Corsair EX400U 2TB Portable SSD Review

Simon Crisp February 14, 2025 Featured Tech Reviews, Reviews, SSD Drives

The PCMark 10 Data Drive Benchmark has been designed to test drives that are used for storing files rather than applications. You can also use this test with NAS drives, USB sticks, memory cards, and other external storage devices.
The Data Drive Benchmark uses 3 traces, running 3 passes with each trace.

Trace 1. Copying 339 JPEG files, 2.37 GB in total, in to the target drive (write test).
Trace 2. Making a copy of the JPEG files (read-write test).
Trace 3. Copying the JPEG files to another drive (read test)

Here we show the total bandwidth performance for each of the individual traces.

The Crucial EX400U doesn't seem to handle PCMark 10's Data Drive Benchmark that well. Although its comfortably the fastest drive in the write test, it slips behind Seagate's FireCuda Gaming SSD in the read-write and read tests, finishing behind the Seagate drive in the overall bandwidth score.

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