Benchmark – HD Tune Pro Disk Speed
HD Tune measures the speeds on the entire disk surface to give you an idea of performance is distributed according to the location of the data blocks. For hard drives, the data transfer rate on the outer tracks of the platter is read faster compared to the inner tracks because of the greater number of sectors.
As obvious from the chart above, the sequential access tests generally report a uniform performance in both read and write which is close to 27.3 MB/s and 26.2MB/s. The performance seen here is limited by the USB 2.0 interface, which like I pointed out in the Chaintech Apogee Astro 266X review is practically around 30MB/s to 40MB/s. Compare that to the speeds around 50Mb/s to 70Mb/s you’d get from most mobile hard drives by connecting them to a SATA 3.0Gb/s interface.
Here is the above data in the Bar charts for better readability.
Note that the burst rates are also pretty close to the average transfer speeds indicating a clear bottleneck of the USB interface. I’d like to see how this drive would have performed with an eSATA interface.
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