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To gauge the overall performance of the drives, we assigned a top score of 25 to the top performer in each benchmarks series (loading, application, copying, and installation) and the rest proportionally, giving each benchmark series an equal weighting. The OCZ Vertex 2 was the fastest in all tests, resulting in a perfect score of 100.
Though close in overall performance, the Deskstar outperformed the Caviar Blue by a larger margin in the tests it won, giving it a slim victory. The two drives seem to just a step below the Barracuda XT 2TB, but slightly faster than WD's old 300GB VelociRaptor.
While not entirely indicative of real world performance, HD Tune does give us a glimpse into a hard drive's inner workings. Its transfer rate benchmark measures speed across the entire disk, giving us an idea of how fast it is over its entire span.
HD Tune measured a maximum transfer speed of over 130 MB/s, offering more evidence that our Caviar Blue sample has two 500GB platters just like the Deskstar 7K1000.C. The two drives also performed very closely in our timed tests and are similar in weight as well.
Altering the Automatic Acoustic Management (AAM) setting is a simple way of improving a hard drive's acoustics. In essence it slows the aggressiveness of the drive's seeks, whih increases access time and slows performance. For the Deskstar 7K1000.C and Caviar Blue, setting AAM to "quiet" produced a longer access time of 4.1 and 4.7 ms respectively. AAM had no effect on file transfer speeds.
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