Q: My laptop is getting clogged and its high time for a format, but this time I am thinking about loading Vista on it (for experiments) instead of WinXP. Im not too worried about performance issues (the laptop is fast enough and only my secondary machine) but I am concerned about battery life. Vista is more voluminous than WinXP as a whole and requires more resources, but does it have different types of optimization for notebooks, the battery life can improve?
Has anyone done something like me or perceived differences?
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Re:There were known issues in pre-RTM that GREATLY shortened battery life.
Don't load anything pre-RTM.
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Re:Under RTM I'm getting roughly equivalent on my Thinkpad T43 (~3 hours); Aero glass is running, but it's not that powerful of a chipset (X300).
As was mentioned before depending on what you're doing YMMV.
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Re:I haven't noticed any difference with my Dell I5100 and the RTM. It runs about 2.5 hours on XP and about the same on Vista, Note: this laptop uses a P4 Desktop 2.66Mhz CPU. Not running Aero Glass though.
guy
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Re:I haven't noticed any battery issues in RTM. I'm getting a little over 5 hours with my Dell D620 with the 9-cell battery. This is with Aero glass, wireless, blah blah.
I never had XP on this system though, so I can't really compare.
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Re:In the RTM version running on my Dell E1505, battery life is reduced by and hour and a half. In XP I could get 3:30 hours off a full charge. In Vista RTM, that's reduced to 2 hours of runtime. Unacceptable.
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Re:Originally posted by: guy
Solution: dump Aero on a laptop. Or plug it in :laugh:
Yeah – that'll work. Actually, Aero brings nada to the party for a working computer – it is fluff for gamers and kids who like to be awestruck by eye candy. 
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Re:Originally posted by: guy
And, using the Aero Glass imagery has been tested to definitely consume more battery power and thus shorten battery life.
Makes sense. Aero pushes the GPU constantly, and if you have a high power GPU (say a GeForce Go!) you can bet battery life is gonna suffer.
Solution: dump Aero on a laptop. Or plug it in :laugh:
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Re:Oh yes. MUCH less battery life.
I noticed this under Vista in the Beta, but it has only gotten marginally better under RC2. I have a compaq v5000z with a 12 cell battery (~5 hours under XP) that gets about half that under Vista with everything pretty on the most portable of battery settings. It's definetly a power hog. I think i read somewhere that if you have an AMD chip, there is a driver update to fix a bug where the cpu wouldt return to low power states under certain circumstances. That may be the problem.
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Re:Originally posted by: guy
Battery life, I can just about assure you there will be less life. It's comparing apples to oranges, but one thing is for certain; I just set up a Dell D600 with Vista for my wife (she likes the new games on it). That D600 gets EXTREMELY hot to touch on the bottom side, as in you will likely burn yourself hot. It's not the battery that's this hot, it's the CPU, chipset and RAM.
My guess is that Vista is not properly implementing Speedstep and thus running the laptop at 100%. This would in turn lead to severely degraded battery life.
Yeah, Vista SP2 has some serious power management problems. I was using up 100% of the cpu just playing back videos in WMP11. I think that speedstep was lowering the processor speed for some reason and now allowing it to run at full speed.
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Re:And, using the Aero Glass imagery has been tested to definitely consume more battery power and thus shorten battery life.
Re:Battery life, I can just about assure you there will be less life. It's comparing apples to oranges, but one thing is for certain; I just set up a Dell D600 with Vista for my wife (she likes the new games on it). That D600 gets EXTREMELY hot to touch on the bottom side, as in you will likely burn yourself hot. It's not the battery that's this hot, it's the CPU, chipset and RAM.
My guess is that Vista is not properly implementing Speedstep and thus running the laptop at 100%. This would in turn lead to severely degraded battery life.
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