advantages of faster CPU (heat/power)

[skanky]

is there any advantage from upgrading my T40 2373 from a P4M 1.3ghz to a P4M 1.7ghz in terms of heat output and power usage etc?

will my battery last longer or shorter with an upgrade like this?

[sktn77a]

In most applications, the 1.7 will not provide a significant difference from the 1.3 (exceptions are, of course, CPU-intensive computational software - iterative optimization algorithms, 3D rendering, etc) You might see a 30% improvement in speed on these. The 1.7 MHz processor also has twice the full speed cache of the 1.3 (providing the 1.7 is a Dothan) so this might boost things a little bit more. I have a 1.5Mhz and 1.6MHz Banias T4x and a 1.7MHz Dothan T4x. Don't see any speed difference between any of them. You might begin to see significant differences at 2.0/2.1MHz but you'll need to wait for prices to come down.

Heat shouldn't be a problem as the 1.7MHz Dothan shouldn't put out any more heat than the 1.3MHz Banias. For the same reason, battery life shouldn't be any less.

[skanky]

i just want to be sure but a "SL7EP" is a 1.7 dothan chip? and there'll be no problem replacing my 1.3 banias chip out of my T40?

thanks.

[sktn77a]

Yes, the 1.7 a Dothan:

http://processorfinder.intel.com/script ... Spec=SL7EP

The 1.3 is a Banias

http://processorfinder.intel.com/script ... CorSpd=ALL

As you can see the 1.7 has a lower thermal dissipation (heat generation) than the 1.3. It's a straight swap but I expect your T series is an older one an will probably need the latest BIOS and Embeded Controller update first.