How fast are USB 3.0 Hard Disks?
by Willy Foo on Apr.28, 2010, under technology
I was browsing South Asia Computer at Funan Centre one day and saw an ExpressCard for USB 3.0 and wondered if USB 3.0 devices were available already.
It turned out that Buffalo had a USB 3.0 DriveStation that was paired with the expresscard adapter since USB 3.0 notebooks aren’t available yet.
Bought them back and did a transfer..
showed approx 30MB/s
A 2nd transfer showed a little better results 37.8 MB/s
So being really curious what the speed jump was, I removed the ExpressCard slot and plugged the hard disk directly into the normal USB2.0 slot
It showed 20.7 MB/s .. meaning the USB3.0 almost doubles the transfer not too impressive, for the extra trouble of putting in the ExpressCard which needed some extra power via a USB power cable.
Makes sense when the computer/notebook already has USB3.0 slot, in which case you get double the speed without additional hassle.
Note: The tests are not entirely accurate as the files transferred on the last try were 4 large files, while the first 2 were many smaller files. But this should give an indication of the rough speed. Will have to do more precise measurements with benchmarking software later.
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