Drive Acoustics and Power Consumption
Drive acoustics is something that can be a very important metric when purchasing a drive. As such, we purchased and built a 12 x 12 x 12 box out of 2" thick insulating foam. In the center of the box, we place the drive on 3" acoustic foam. Sound level measurements are taken from a distance of 6 inches.
Looking at the chart above, we find all drives maintaining a steady and consistent noise level throughout testing. At its peak, the WD Black tops the charts just over 40dBa.
Our custom power testing samples each drive for a period of three minutes across each workload. In order to offer more granularity we sample the power in one-second intervals. 4K random read/write carries the least amount of power consumption for the WD Black, here we see the drive move from a touch over 9 watts down to 8.5 watts at the end of the workload. Peak power consumption comes during sequential read operations as the drive jumps to 10watts.
Idle power consumption for the WD Black hangs around at 8.1 to 8.3 watts, and after entering standby down to just 1 watt.