CrystalDiskMark is a synthetic benchmark that tests both sequential and random small and mid-sized file transfers. It provides a quick look at best and worst case scenarios with regard to drive performance, best case being larger sequential transfers and worse case being small, random transfers.
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CrystalDiskMark Benchmarks
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Synthetic File Transfer Tests
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Looking at the sequential transfer test, the My Passport Edge came up well short of the field, although in the 512K test it posted a read score that approached the performance of the green WD drives. As the ATTO tests indicated, this unit does better in smaller transfer sizes; in the 4K write test, the My Passport Edge actually (just about) equaled and bested the WD AV-GP and WD Caviar Green, respectively, and its read score was close to them both. The 4K QD32 test was hard on the drive’s read capabilities, but the My Passport Edge performed very well on the write portion, beating out three of the other drives and scoring right in the middle of the field.