Overclocked Dothan

Overclocked Dothan

[David Belanger]

Hello guys. First of all, I hope I am posting this question in the
right mailling list, and sorry if I'm not, I didn't find another one.

So here goes my questions:

Could anyone explain to me the different components of cpu freq
throttling and all of this. I mean, maybe it's because I'm a newbie.
But still, I did my research and couldn't find anything explaining the
basics when it comes to all of that. What should I select when I build
my kernel ? What are the differences between the different choices?
(i'm talking about kernel-configuration now, not how throttling work)
(enhanced speedstep, pst, vids, im all confused)

My laptop has a Pentium M 1.6Ghz 400FSB (Dothan B0?) but I am running
it with 533FSB. But now I'm all confused... what are the differences
when I do that? I mean, the built-in VIDs are going to be wrong? (and
what are those VIDs btw, why 4 of em'?). And what if I want to
undervolt my overclocked cpu? What should I do in order to do that?
Modifying speedstep-centrino.c? (saw that on a forum)

Hmmm, I understand that I am asking a lot of questions, and I am sorry
for that, but I couldn't find my answers anywhere else. Please answer
my questions in a not too-technical-way if you can. And also, I'm
sorry if my English seems bad, i'm not a native English so please
forgive me.

Thanks a lot, David.

Re: Overclocked Dothan

[Dominik Brodowski]

Hi,

On Sat, Jul 09, 2005 at 01:01:10AM -0400, David Belanger wrote:
> My laptop has a Pentium M 1.6Ghz 400FSB (Dothan B0?) but I am running
> it with 533FSB. But now I'm all confused... what are the differences
> when I do that? I mean, the built-in VIDs are going to be wrong?

Good question. As you're running your notebook outside its specification,
doing such things as CPU frequency and voltage scaling might cause
"interesting" results. Freezes, possibly even hardware damage, to name a
few.... but well. As far as I can tell from the way the speedstep-centrino
driver works, it modifies the _multiplier_ and the voltage settings. So if
my assumption is correct, you will only be able to go down to 800MHz instead
of 600 MHz.

	Dominik