Is there a Power Consumption comparison of notebook storage devices?

[SlyMaelstrom]

In a notebook, does anyone know the comparison of power consumption between a 5400RPM HDD, DVD-ROW, and SD card in a card reader? I'm curious to know which would be the best for viewing movies while on battery. Let's assume the computer has enough RAM to avoid any swap-file usage while the movie is running. Let's also assume that the video is of a quality that is playable directly from any of the above media.

Also, does anyone know the comparison between a 5400RPM HDD vs a 7200RPM HDD for notebooks?

[Soulburner]

Well, assuming the HDD was able to be shut down, the SD card would use the least amount of power by far. There are no mechanical devices to power, only electronic.

A 7200RPM HDD uses 25-30% more power than a 5400RPM HDD.

Your only issue will be keeping the HDD off - a lot of things can bring it back into action that are out of your control.

[SlyMaelstrom]

Thank you. If you'd like you can check out my notebook build post that I'm about to make... however, I don't suppose I need to give a moderator permission to view posts on this forum.

... There won't be free food and drinks or nothing.