RPi Power Save

Haven't posted here for a while...no time!

Since I'm looking at running an RPi B or B+ for a HomeGenie server to drive a Z-Wave network, power consumption becomes an issue.  I started looking into power options.

This one Muslim dude (I wouldn't have known except the final comment in the post) has a page listing some of the options, which are to disable the USB hub/Ethernet, use the model A, underclock the core, and disable video output.  I hadn't realized that dynamic clocking could be used as power save; that somewhat compensates for the lack of sleep functionality.

The config.txt file is described at raspbians.com (which sounds like some strange flavor of lesbians...).  Actually, the official documentation is at raspberrypi.org.  The arm_freq_min, core_freq_min, and sdram_freq_min settings are used for dynamic power as long as force_turbo=0.

Edit [2016.01.24]: Using external hardware, it's possible to put the RPi into a suspend mode: Sleepy Pi and Witty Pi.  What I really want is something that'll go from suspend to active on network traffic (not WOL, which boots on network traffic).