Possible way to overclock any notebook?

I was just thinking, why don't people change the reference crystal for the PLL to overclock?

If should work with any notebook, even the ones with i7 CPUs, right?

What's the reason that stops this happening?

I've seen it done to a PS2, so why not a notebook?

 

I have no idea,but why dont you try it and let us know how it works out.:}

 

The clock generator in many notebooks is set at boot time.
If you manually change the frequency chances are the bios might not boot.
It's the same thing for cpu compatibility. If you put a quad core cpu in a laptop that only has bios support for dual core cpu's it just wont boot even though the processor might have the same socket, fsb and frequency.

 

This sounds completely logical.... might be the actual reason.

 

Changing from the 14.318Mhz to a higher crystal will also change other timing signals the PLL outputs. See table on the left. pci signals can get flakey at > 37Mhz. Could be something to consider if you can't tme-unlock the PLL for setfsb overclock OR fslx pinmod doesn't work, or if the fslx pinmod is too big of a jump (eg: 266->333).

 

Ok, I guess that is the best reason not to do it.
To make it worth the effort you would have to use an 18mhz crystal and that would mean a 41mhz PCI clock