iPEAK multitasking
We've developed a series of disk-intensive multitasking tests to highlight the impact of command queuing on hard drive performance. You can get the low-down on these iPEAK-based tests here. The mean service time of each drive is reported in milliseconds, with lower values representing better performance.

Although the best it can manage is second place, the Caviar SE16 640GB consistently scores well in our disk-intensive iPEAK multitasking workloads. Only in the dual-file-copy workload does the Caviar drop out of the top three, and even then, it's still faster than most of the direct competition.