IOMeter
IOMeter presents a good test case for both seek times and command queuing.

Western Digital's latest Caviar Green may have been able to outrun its predecessors in most of our tests, but IOMeter presents a unique multi-user challenge, and it's one that flummoxes the 2TB drive. The 2TB Green's transaction rates are lower than those of both preceding GreenPower Caviars across all four test patterns. Interestingly, though, the 2TB Caviar runs largely neck-and-neck with the 1.5TB Barracuda, which only pulls ahead with the read-dominated web server test pattern.

CPU utilization is low for all our drives in IOMeter.