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ASUS ZenBook 13 UX331UN Ultrabook Review

SSD Performance

To test the speeds of the 256GB M.2 SSD that ships with the ZenBook, we ran CrystalDiskMark 6.0.0.


The Micron 1100 M.2 drive only uses a SATA interface, so read and write speeds are held back to 523.1MB/sec and 445.8MB/sec. This is decent enough performance for SATA, but NVMe would have been five or six times quicker.

USB 3.0

The UX331UN has USB 3.1 Gen 1 ports. We plugged a 32GB SanDisk Ultra USB 3.0 thumb drive into the one on the left next to the USB C port.

The read performance of 126.1MB/sec is about what we expect for this thumb drive, whilst the write speed of 31.28MB/sec is relatively quick.

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