Benchmark Results: Temperature And Power Consumption
Thanks to its lower spindle speed of 7200 RPM, the Seagate Constellation.2 stays cooler than both of the other drives.
In idle, the Hitachi Ultrastar C10K600 runs with the least power, but the two Seagate drives are also convincing with moderate values not exceeding 5.2 W. The power consumption of all three test candidates rises little, even at maximum data throughput. However, the Seagate Savvio 10K.5 uses more power than the other devices in the test bed.
Also, why not benchmark a 3.5" disk, but only use the outer portion. If both that and a 2.5" have the same density and rotational velocity, then the 3.5" should win due to higher I/O speeds resulting from higher linear velocity.