You can refer to our article called Hard Disk Drive Power Consumption Measurements: X-bit’s Methodology in Depth for details on this test. We will just list the specific modes we measure the power consumption in:
- Start (the current the drive consumes when starting up)
- Idle (the drive is not accessed at all, but it is turned on and ready to work)
- Random Read and Write
- Sequential Read and Write
Let’s check out each mode one by one.
The P256 needs the lowest current to start up, only half the current required by its lower-capacity cousin. The Extreme series are ranked up according to their storage capacity again: the larger the capacity, the higher the power requirements. The rest of the SSDs don’t show anything extraordinary here.
The SSDs are ranked up according to their controllers, indicating who is the main consumer in idle mode. The Samsung controller proves to be the most economical while the Indilinx-based SSDs require 50% more power. The SandForce needs twice and the JMicron 612 needs three times as much power as the Samsung.
There are no clear leaders at random operations. But we can see which SSDs are not economical in this mode. These are the Force and Reactor at reading and the Performance series at writing. The Reactor is also voracious at random writing, requiring over 2 watts of power.
Seven out of the nine products pass this test with close results. And there are two losers: the Force needs a lot of power for sequential writing and the Reactor for both sequential reading and writing.