Overlocking cpu PLL voltage?

[MumboJumbo]

Hey, now ive been wondering for some time why ive never been able to keep my q6600 GO stable at anything about 3.1GHZ abouts now. It used to be ok at 3.4GHZ for a few weeks. Now i run it at 3GHZ.

So i googled overclocking a q6600 and i find a bit-tech article of them doing it. And they upped their "PLL" voltage, ive never heard of this. Ive only ever upped cpu,ram and mch voltage.

What is this exacly?

We adjusted the CPU voltage to 1.4625V, which gave us an actual voltage (at least, according to the Asus hardware monitor in the board’s BIOS) of between 1.408V and 1.413V – there were slight fluctuations, but certainly nothing to really worry about. This wasn’t quite enough to get the board stable up at 3.35GHz though as we needed to increase the CPU PLL voltage from 1.50V to 1.70V along with both FSB Termination Voltage and North Bridge Voltage from 1.20V and 1.25V to 1.40V and 1.55V respectively.

http://www.bit-tech.net/hardware/cpus/2007/07/25/overclocking_intel_core_2_quad_q6600/2

Ive also never upped my FSB termination voltage. Id really like to get my q6600 GO to run at 3.4ghz but it appears im missing some things that i shoulda upped to achive it.

 

[MumboJumbo]

Having looked into it further i think what is holidng me back is not upping my MCH high enough. I might try put it up more later and try hit the 3.4ghz.