On Mar 1, 2010, at 2:39 PM, Clark Martin wrote: > On 2/28/10 8:16 PM, Austin Leeds wrote: >> Some people say it's wasteful—leaving a computer on at night sucks >> up electricity. Personally, I find that my Pismo uses only about 1% of >> its battery life per night (with two somewhat used 6.6 Ah batteries >> topping off at a total of 10.7 Ah). Doesn't seem like much to me, and >> I'm pretty sure having our iMac G4 sleeping through the night doesn't >> make more than a nano-nick on our electrical bill. I notice more usage >> than that starting the Pismo up on batteries, usually around 2-3%. >> Guess that kills that argument. >> Anyway, the longest uptimes I've seen around here are the one-week >> sessions we have with our iMac G4, before it is booted into Mac OS 9 >> or accidentally turned off or something. My Pismo has gone roughly as >> long… However, the longest uptimes I've seen reported for Mac >> computers (not counting the several hundreds of days servers can run) >> are between 36 and 45 days for some PPC Power Macs. >> I'm going to try leaving my Pismo on (asleep at night) for as long >> as I possibly can, just out of curiosity. I'll post in five day >> intervals initially. Anybody else have some unbelievable uptime >> stories? >> > > My MacBook Pro is usually running (including periods of sleep) for months at > a time. The usual reason for it to be restarted is a software update. > > > You are right, laptops when sleeping draw a tiny amount of power. I'd have > to do the math to be accurate but I'd suspect you would have to leave a > laptop asleep for somewhere between a week and a month to use as much energy > as you would starting the computer up. > > Desktops are a different matter. I've measured power on various Macs. As an > example an iMac G3 draws 93 watts running and 37 watts on standby. That > seems typical for PPC models. Yes, they do save power on sleep but not THAT > much. An Intel iMac on the other hand only draws about 1 watt when sleeping > (I don't have the running power). Note that the same machine draws the same > amount of power when off, so in that case it truly saves power to let it > sleep, no wasted time booting up.
Interesting discussion, guys. Now I feel better about letting by MacBook Pro sleep all night every night! -- You received this message because you are a member of G-Books, a group for those using G3 iBooks and PowerBooks (we run a separate list for G4 'Books). The list FAQ is at http://lowendmac.com/lists/g-books.html and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g-books Support for older Macs: http://lowendmac.com/services/
