Hi Choppy, The continuous power issue is one I am looking at too, in sailing cruising. Do you have any onboard wind or solar power?? You need to actually measure the current drawn by your laptop or ITX. A decent digital multimeter will measure up to 5 to 10 amps (My Elenco does 10). Then you can see what happens as the system slows down / powers down the hard drive etc... Right now I'm looking for info like that on some VIA Mini-ITX boards...
Regards, Terry King ...On The Mediterranean in Carthage
****FOUND this: Take a look at:
http://www.epiacenter.com/powersim/p...mulator_v2.htm
for a 'spreadsheet-like' calculator for the VIA boards...