[vox-tech] Power consumption

[Jonathan Stickel]

Obviously, battery make, age, etc plays a big role.

Hmm... as an engineer I'm curious about wasted energy, primarily in the 
form of heat.  A good test might be to put 2 laptops is well-insulated 
chambers and measure the heat generated under idle vs. full cpu use...



mrp wrote:
> On Wed, Aug 25, 2004 at 11:17:30AM -0400, David Hummel wrote:
> 
>>In practice, even the current generation of G4 laptops get only ~2.5
>>hours max.  Where are you getting those numbers, and for what models?
> 
> 
> This could quickly devolve into a religeous argument.  I've always been
> told that the cleaner RISC architectures make it easy to power down
> large parts of the chip when idle, and that the more complicated CISC
> architecture makes power optimization difficult.  However, most modern
> CISC chips are built on a RISC core with a layer of CISC stuck on top, so
> maybe that's no longer as true.  But it's been my experience that powerPC
> based laptops have longer useful life than Intel based laptops.  e.g.:
> 
> I have a friend with a 15" G4 Powerbook (1 Ghz I believe), and if
> he's doing simple email/word processing, then he gets well over 3
> hours. Under heavy loading it's probably less, but under heavy load my
> T20 only got 1.5 hours when new (not long enough to play an average DVD,
> for instance)... now it's lucky to get 20-30 minutes.
> 
>   -- Mitch
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