Pentium M vs Celeron M power consumption

[scummy]

I need my next thinkpad to run cool and have the best battery life my budget will allow. So I'm trying to decide whether it is worth the extra $400 to have the Pentium M, since I can put speedstep on the lowest setting, or if the Celeron M in it's single state will perform comparably. I don't need horsepower - just running office apps on this thing.

TIA for any advice.

 

[Accord99]

The Celeron-M uses quite a bit more power in low CPU usage situations such as office applications.

http://www.tomshardware.com/mobile/20040309/centrino-10.html#battery_test_mobilemark_2002

Of course, $400 can get you several additional batteries.

 

[Falloutboy]

well aren't the new celerons based on the same chip as the pentuim M? I thought I read that somehwere they just have some of the cache taken away

 

[Naruto]

Celeron M is not a slow cpu, don't let the celeron name full you. A guy with a celeron M 1.3ghz on a ATI M9 64mb got 6900 3d2k1 marks. I have the same laptop but outfitted with a 1.7ghz pentium M and only got 350 more 3dmark points than him.

 

[scummy]

Thanks Accord. That answers my question, even tho its not the answer I wanted...