Benchmark Results: Power Consumption
Our benchmark configuration still consists of a smart battery that allows us to measure DC power consumption on the +5 V and +12 V power rails. The next configuration isn't quite ready yet. However, it will allow us to also measure the +3.3 V rail, which means we will be able to compare the VelociRaptor.
The power consumption results for the Vertex 3 line up with our expectations. OCZ claims it turned up performance a bit, which we saw in the preceding benchmarks. As a result, our benchmark confirms a slightly more aggressive use of power.
Even though our results show that the Vertex 3 consumes more power than the Seagate's Momentus, we have to take time into account. A disk-based drive will always consume more power absolutely. At the system level, a SSD will increase power consumption because CPU and memory utilization rises in response to improved I/O activity (they're not sitting there, waiting on a hard drive to send data). But remember that a SSD-based configuration will always finish those operations faster. At the end of the day, a SSD lowers power consumption.
|PCMark Vantage (x64) HDD Suite||Average Power Rating (W)||ActualPower Used (mW)||AverageCPU utilization (%)||Completion Time (mm:ss)|
|Kingston SSDNow 100 V+||0.6||85||14.7||8:06|
|OCZ Agility 2||1.4||186||10.9||7:54|
|OCZ Vertex 3 Pro||1.6||207||15.1||7:41|
|OCZ Vertex 2||1.9||269||13.9||8:28|
|Seagate Momentus 5400.6||2.2||426||10.4||11:40|
|OCZ Vertex 3||2.3||305||15.1||7:50|
|G.Skill SATA II FM-25S2S-64GB||2.6||369||13.5||8:40|