iPEAK multitasking
We 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.

The 690G may not kick its command queuing into gear until there are more than 32 I/O requests in the queue, but that doesn't seem to matter through our first wave of iPEAK multitasking tests. With the exception of our dual file copy workload, the 690G delivers better performance with workloads that include compressed file creation and extraction.

When we switch to iPEAK workloads that include Outlook PST file import and export operations, the 690G stumbles, falling behind the GeForce 6150 SE in three of four tests.