I found this - http://www.asrock.com/mb/Intel/Q1900DC-ITX/ "DC Adapter Saves More Energy Compared to other counterparts, this motherboard is powered by DC adapter and able to reduce power consumption by a maximum of 50% when idle and 38% at full loading! Without traditional PSU, you can save a lot of energy and be more friendly to our environments." This looks like BIG difference.
Hello, I'm going to build my first NAS based on Q1900 with XPEnology OS and I would like to ask you which motherboard has lower power consumption - Asrock Q1900-ITX (with 80PLUS Gold PSU) or Q1900DC-ITX (with power supply from old laptop). In both cases I will use 2pcs of WD Red 3TB (Raid 1) and 1pc of 4GB of RAM module. Thanks, Petben