Negligible... I run an APU1 w/ dual WLAN cards, and am using all of the internal NICs, and running a pile of services on it. It uses less power than a light bul

Negligible... I run an APU1 w/ dual WLAN cards, and am using all of the internal NICs, and running a pile of services on it. It uses less power than a light bulb, even under full load.