Which Pentium-Ms and Powerbooks use PC2100, PC2700, PC3200?

[uOpt]

I am getting too many contradictory google results.

Does anybody know which Pentium-M notebooks precisely want which speed of RAM? Is that chipset/mainboard/evendor-dependent? I need it for a 1.3 GHz Pentium-M Thinkpad R40.

Also, I have seen that for Powerbooks you need PC2100 up to the early 1 GHz models and PC2700 for the later 1 GHZ and up, is that true?

What happens if I mix them?

Thanks
Martin

 

[ShellGuy]

In theory if you just put in 2700 it will down clock to 2100..

Wil G.

 

[fbrdphreak]

If you have an R40 1.3, that means you have the first gen P-M (130nm, 1MB L2 Cache, 855 chipset). Do you have integrated or discrete graphics?
If you have integrated, chances are you have the 855GM chipset which only supports PC2100.
If you have discrete, you'll have the 855PM which supports PC2700.
Regardless, most RAM will just run at the highest supported speed, like ShellGuy said.

 

[uOpt]

I have one with Radeon 7500. And in a few days a Powerbook with first-generation 1 GHz G4.

I guess I'll buy 2700 modules then and of they don't mix with the old modules I'll just sell the old ones.

Thanks, guys.

 

[Wuzup101]

I'm fairly certain that all aluminum powerbooks use pc2700 and the Ti Books used pc2100. I can tell you for certain that my 1.5ghz powerbook from the last revision uses pc2700 (they were 1.33 or 1.5 ghz models).

 

[hopejr]

My iBook runs PC2100, but works fine with the PC2700 I put in it (just clocks it down). I'd expect it to be the same with the TiBooks.