I got hold of a Kill-a-watt unit today. This thing plugs into a power outlet and has a power plug on it which is where you plug in the device that draws power. Got it? :-)
http://www.p3international.com/products/p4460.html Build 656, G1G1 laptop XO turned off, empty battery: 21 watts XO turned on, empty battery: 21 watts XO turned on, battery removed: 10 watts (stays fairly steady during boot up) XO turned on, battery removed, backlight turned off: 7 watts XO turned on, battery removed, backlight turned off, camera+mic on: 8 watts These readings are taken at the wall charger (Kill-a-watt says the wall charger is drawing 124 V) so there will be losses along the way (Richard's readings (http://wiki.laptop.org/go/XO_Power_Draw) are from the battery, so they are closer to the machine) but its interesting to see what's being pulled in at the wall socket. For comparison, my Sony VAIO VGN-S380 (http://computers.pricegrabber.com/laptop/m/7624589/details/st=product_tab/) has the following stats. VAIO turned off, empty battery: 24 watts VAIO turned on, empty battery: 50 watts VAIO turned on, battery removed: 43 watts (39 to 43 watts during boot up) VAIO turned on, battery removed, backlight turned to minimum: 23 watts VAIO turned on, battery removed, backlight full, fan turns on (processor jumps from 800MHz to 1.73GHz): 71 watts cheers, Sameer -- Dr. Sameer Verma, Ph.D. Associate Professor of Information Systems San Francisco State University San Francisco CA 94132 USA http://verma.sfsu.edu/ http://opensource.sfsu.edu/ _______________________________________________ Olpc-open mailing list [email protected] http://lists.laptop.org/listinfo/olpc-open
