It's interesting to see the power figures for these drives. I assumed that all storage devices by now would have a decent low-power idle state, but for the PCIe drives that isn't quite true.
Then again, other PCIe devices such as video cards don't exactly idle by sipping a few milliwatts. Plus, the controllers on the PCIe drives can only do so much to send the rest of the drive into a sleep state while the controllers on the drive itself remain active. It's like the SATA controller on a motherboard remaining fully powered while the attached drives sleep: mobile platforms handle power saving with a bit of grace, but it just doesn't seem to be there for desktop platforms. As mobile and desktop silicon converge, maybe we will see improvements in the areas of power conservation.
Thanks for the hard work you've put into the article, Dee.