pll voltage advice needed

[scooter.jay]

I have the a system i built for a friend for a week as he has had some problems all software related as you would expect. The specs are as follows.

P5E3 Deluxe
CorsairTwinX XMS3 1800mhz CAS 7-7-7-20 XMP
E6850
8800GT

I have in my overclocking always looked for 24/7 stable overclocks. The thing is now stable is not what i am looking for its points so my question is when does pll voltage come into play ie how much do you raise the vcore by before a little tweak on your pll is required. I have tested the system at stock rock solid so getting ready to push it now all on stock cooling. I look forward to maybe getting some points but can not promise anything but will have a damn good go!

[sacha35]

Hi There scot the PLL volts help to control what sort of max FSB you might get, as your system is on stock cooling i would not like to push the PLL volts to much on this system as it is the quickest way to blow your CPU, with extreme cooling we normal raise this to around 1.9v-1.95v, but as you are stock cooled i would say around 1.6v-1.7v should be fine.

[maverik-sg1]

Stock cooling an an E6580 is not ideal for overclocking.

I would push as far as you can on stock voltages as they would more than likely be your stable settings 24/7.

[scooter.jay]

thanks for the info it was because of the killing cpu part i asked i also had a feeling it would only apply more to better cooled clocking just something i have never had to use myself. The reason i asked was going for a few pi runs so stable for a 1m maybe but will take the advice and leave it on auto. Also with so many options under the ai tweaker menu just trying to understand what i have at my disposal my msi P35-neo2fr has limited options by comparison.:(

[jabski]

i was discussing pll voltage with my friend the other day. Here is a example of what it can do.
Q9300 upped the pll voltage to 2.20v and got a extra 200mhz but only cpu-z stable. Not even spi 1m. Does it really seem worth the risk.
I know some have had good results upping the pll voltage (Cupra comes to mind with his Q6600) but be very carefull and dont use it for long periods of time

[scooter.jay]

Well good to know i suppose that until i make the leap to ss may as well not take the risk.:biggrin:

[MonsterMunch]

Hi... I would try & keep your PLL voltage to 1.8v or less for general useage, mine normally sits at 1.6v..

Pretty safe for short benching runs up to around 2.2v...

Oh & BTW, dont let Pete give u any advice on PLL voltage :lol: