Thinkpads Forum

Is Dynamic FSB Frequency Setting disabled in T61 and T61P Thinkpads?

Or perhaps only with Extreme Series?

I am talking here about modified bioses, of course.

My sources tend to point out at my X9000, so presumably all Extreme Series(QX9300, X9100,X9000). Does anyone else have additional feedback?

eru3 wrote:Is Dynamic FSB Frequency Setting disabled in T61 and T61P Thinkpads?

As far as I know - not that I've dug deeply into the matter at hand - the answer is "yes".

eru3 wrote:Is Dynamic FSB Frequency Setting disabled in T61 and T61P Thinkpads?

I don't know about DFFS, but i certainly sure about SLFM (super low frequency mode). It is present in all core 2 duos (accepting this technology) in T61. It is simple to observe. Choose maximum battery life and kill all computational tasks. Launch cpu observation programm (sometimes "My Comuter->Settings" can show CPU frequency) and you can see 800MHz. If you can see choosen multiplyer it will 8 (not minimal) - so FSB becomes rated 100MHz. ThrottkeStop can't understand low FSB and shows 200MHz rated FSB and 1.5GHz CPU core speed.

eru3 wrote:Or perhaps only with Extreme Series?

Yes all core 2 quad (i don't know about extreme C2Ds) have no SLFM!

And yes i am on Middleton's BISO, but this functionality present in original BIOS.