The following benchmarks are the reported read speeds per second by different units of the same model taken every 10% of the drive's capacity (including at the start & end of the drive) for a duration of 15 seconds and then averaged. Tight groupings represents consistant speeds between units. Variances with dips represent drives that have failing media which slowed down the time it took to read that spot. Graph lines (if any) lower than the rest or are mostly flat were connected to a slow storage controller.