An average read speed of 54.0 MB/sec was recorded along with a burst speed of 98.3 MB/sec. Once again, the eSATA gave additional bandwidth for the BlacX compared to USB 2.0. The USB 2.0 port is no doubt limiting the performance of the BlacX. Using the USB 2.0 port, the BlacX had an average read transfer rate of 25.5 MB/sec, 6.25% better than HD Tune’s benchmark, and a burst speed of 27.2 MB/sec. The results of the HD Tach long bench were slightly better than that of HD Tune’s benchmark. Read performance (Long Bench with 32mb zones) Note that the temperature monitoring and hard drive name recognition is available when using the eSATA port. The access times for both USB 2.0 and eSATA were 14.2 ms. The maximum transfer speed was 63.2 MB/sec and the minimum transfer speed was 33.2 MB/sec. ![]() The average transfer peed was 51.4 MB/sec, a drastic 114% increase over the USB 2.0. Using the eSATA port of the BlacX gave much more respectable results. Note that when using the USB 2.0 port, the hard drive is recognized as a “Generic External” and no temperature monitoring is available. ![]() By glancing at the horizontal slope of the HD Tune graph, it becomes obvious that the USB 2.0 port is a bottleneck. These results are fairly common for USB 2.0, even though the latter is rated to have a maximum transfer speed of 480 Mbps, or 60 MB/sec. When using the USB 2.0 port, the BlacX had a respectable 24.0 MB/sec average transfer speed with a minimum of 23.4 MB/sec and a maximum of 24.3 MB/sec.
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