Good point, almost forgot about that even though that's what I used when I was on air. :S Definitely an option, but just make sure you experiment with the settings before leaving your
CPU with the fan on low all alone for the night if you decide to go that way. I was able to get my 80mm tornado down to about 4k-4.5k RPM's and still get exceptional cooling with a low noise level, but anything below that wouldn't work efficiently. Just understand you may not be able to take the noise factor for long, and that gets even truer for the longer time you own it. To me, it sounded cool at first to have a mini vacuum in my computer, but after a while it just got annoying.
What a coincidence, I just plugged in my tornado today to see how much air it puts out...I just love it how it blows itself across a smooth surface