Archived posting to the Leica Users Group, 2010/07/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I get up to 6-7 hours with my Macbook Pro when not using the wifi, and perhaps 4-5 hours when using it. The use of wifi seems to be the most important factor in my experience. Nathan Nathan Wajsman Alicante, Spain http://www.frozenlight.eu http://www.greatpix.eu http://www.nathanfoto.com PICTURE OF THE WEEK: http://www.fotocycle.dk/paws Blog: http://www.fotocycle.dk/blog YNWA On Jul 16, 2010, at 11:16 PM, Ric Carter wrote: > maybe more important is turning off stuff you are not using--bluetooth, > wifi, ethernet... > > don't forget to dim display > > ric > > > > > On Jul 16, 2010, at 3:59 PM, Lawrence Zeitlin wrote: > >> Akhil asks: >> >> Can any list members shed some light on the CPU power vs. battery run-time >> >> trade offs involved? I have of course, asked the manufacturers' tech >> support >> >> but never could get a satisfactory answer. >> >> >> - - - - - >> >> >> First be aware that all computer manufacturers lie about battery run >> time. A >> good rule of thumb is that, in normal use, you will get no more than half >> the battery run time claimed. >> >> >> Second, CPU cycles take power. The faster the CPU, all other things being >> equal, the less the battery run time. Just how much shorter depends on a >> variety of other factors like screen brightness, disc run time, Wi-Fi use, >> etc. >> >> For portable use manufacturers favor chips with conservative power >> requirements rather than faster, more capable power hogs. >> >> >> Most laptop makers have a minimum battery use mode for extended portable >> operation. If you look at just what the computer does, you invariably see >> that the CPU speed is reduced, sometimes to half its normal setting, the >> disc run times shortened, and the screen turned off after several minutes >> without keystrokes. >> >> >> My experience with battery operated computers ranging from the old HP LX >> 100 >> handhelds to the latest MacBooks is that the lower the CPU power, the >> longer >> the battery life. There ain't no free lunch. >> >> >> Larry Z >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >