Has anyone successfully overclocked p7805u CPU?

[moral hazard]

you can use SPDtool or thaiphoon burner to flash a lower frequency on your current ram. That will make it handle the overclock well.

[llynx]

The only option I see now is to pull the FSLC pin high.

So how would go about doing that ? assuming I flash my ram to run at a lower freq.

[moral hazard]

The PLL (clock generator) needs to have one of it's pins disconnected from GND and connected to VDD (1.05V).
you have to use a 2K resistor between the pin and VDD.

Once you connect the pin to VDD your FSB will be changed from 266mhz to 333mhz.
No software is needed after this mod.

The first step is to find the PLL on the motherboard.
Then please take a photo of the PLL and post it on the forum.

I will give you further instructions if needed on the forum after you post the photo.


BTW the pin I believe will be pin 61 (FSLC).

refer to the attached table to see how the FSB will change when you change FSLC to 1.




Also read this thread:
New way to overclock Clevo M860TU...

The modification is basically the same.

[narsnail]

Haha this is all good and well, but who is going to be the Guinea Pig

It would have been me, but I no longer own a Gateway, we need to conscript someone to do it!

[llynx]

So this mod applied to a qx9300 at a standard 9.5x multiplier would be 3.16ghz, and a 11x multiplier would be 3663, but I doubt this mobo can handle it. hmmmmm seems tempting to try

mhmmmmmm guinea pig yum yum ;9

[andros_forever]

haha yea we need someone to volunteer :_) *looks around diverting attention away from himself*

[ImportJunky]

Im thinking about ordering the q9000.. maybe the q9100.. the extreme core would be nice.. but what a waste if it doesnt work.

[mew1838]

Those quads wont work

[moral hazard]

Those quads wont work

why not?
Is it a BIOS issue?

[sparkyman2000]

So yeah its been a while since I have been inside. Where abouts is the PLL? In laptops is it still close to the CPU? I will take a pic before I proceed. I know what it is and I have a resistor.

Yea going from 2.8 to 3.4 would be cool or even beyond 3.1.

Quad support in 78xx is not bios its mobo pin layout.