I imagine with a sufficient power supply it should not be a problem, at least I haven't had any problem with mine yet. I have a friend who's using one of their DBDC cards in an apu2 and he also hasn't had power issues yet.
> One more thing - how is the signal range for you?
With four 5dBi antennas it's sufficient to have >800mbps in every corner of my single bedroom apartment. Other than that I have no means to test, sorry :)