Well I think one of the best comparisons is just a 1st gen MBP vs a 2nd gen MBP. Yesterday I tried running Feisty on my MBP C2D with screen dimmed to its lowest, ndiswrapper (wifi) unloaded, using only the vesa driver and I couldn't get it below 28W. When I shutdown X it would go down to 27 W but that's as low as it got. By comparison 1st gens seem to get down to 19-20 W which I think is reasonable. Besides ATI's powerplay (which is reported to only make 1-2 W difference) why are these numbers so different? Could it be the open-source wireless driver enabling power management settings on the wireless? Could it be the higher default fan speed (2k vs 1k I think)? I also think the ATI number are naive because the MBP 1st gens had (afaik) underclocked ATI cards while in the C2D machines not only do they not support power states but they are set by default to a higher speed.
If this difference is really consistent then its worth exploring a bit more. Can any other MBP CD owner confirm that they can get 19-20W on a usable configuration (i.e. without disabling everything). What are C2D owners minimum energy consumption rates? I know windows gets reduced battery life when compared to OS X because they mention this on the FAQ on the apple site (I think I found it by googling for applesmc on the apple site) - I think Apple claims this is an applesmc driver issue on windows that they won't do anything about. One useful piece of info in comparing Linux to Windows on this machine is to figure out how much of the power difference is inherant in Linux (i.e. lack of usb suspend, etc...) and how much of it is OS X specific tweaking for these machines (applesmc driver, other hidden power management features). cheers, Sheer On 4/27/07, Michael Gangolf <[EMAIL PROTECTED]> wrote: > What about the Windows on MB(P) consumption? I think its even better than the > linux one (don't have times, not using it so often). > But perhaps it would be good to have a look at the windows site too, not only > linux and osx. Perhaps someone finds a solution there. > > 2.6.21 brings no enhancement under my linux MBP > > Regards, > Michael > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > Mactel-linux-devel mailing list > Mactel-linux-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mactel-linux-devel > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Mactel-linux-devel mailing list Mactel-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mactel-linux-devel
