Power consumption
For our power consumption tests, we measured the voltage drop across a 0.1-ohm resistor placed in line with the 5V and 12V lines connected to each drive. We were able to calculate the power draw from each voltage rail and add them together for the total power draw of the drive. Drives were tested while idling and under an IOMeter load consisting of 256 outstanding I/O requests using the workstation access pattern.

At idle, the Summit draws half the power of the Vertex and about a third of the juice required by the X25-M. However, when subjected to a punishing IOMeter load, the OCZ drives must share the low-power limelight.

The X25-M proves to be the power-hungriest drive of the bunch, which is notable considering that it's also packing fewer gigabytes (80 as opposed to 120) than the others. Keep that in mind if you're looking for an SSD to extend notebook battery life.