good Custom mini ITX computer? Answered

Hello,

I am looking for a good Custom mini ITX build.The reason I want to do this is because I have a solar panel system set up.It is a 33 amp hour battery, 30 watt solar panel, 15 watt solar panel, and a charge regulator.

Things I'm looking for in the computer

Low Power - less than 40 watts
12 Volt - need this 100%
Quiet - doesn't need to be but would be nice
Duel Core 1.6 GHz or above - needs to be
High Performance - good idea
Small - not required but would be better