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Corsair EX400U 2TB Portable SSD Review

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


In our read throughput test, the drive peaked at the end of the test at 2,769.27MB/s, well short of the official maximum of 4,000MB/s but as you can see from the comparison graph. When it comes to read performance, the EX400U is the fastest USB-interfaced drive we've tested to date by quite a margin.

As with the read throughput test, the drive's performance in the write throughput test saw it peak at the end of the test run at 2,786.49MB/s once again short of the maximum official figure of 3,600MB/s. As with the read test, the 2,786MB result may be short of the official figure, but it's the fastest we've seen to date for a USB drive.

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