Overclocking Q9400

[psycho]

I have c2q q9400, and trying to overclock it. I can set FSB to 510-520 MHz and bios loads and works fine, but i cant load windows, and this happens when FSB is above 480 MHz. When FSB below 480 windows loading. What it can be?

 

My cpecs are:

mobo P5K

mem corsair 6400c5c

 

I tried to set CPUV 1.5V, dimmV 2.2V and NB 1.45V

Some photo =)

Edited November 5, 2015 by psycho

[gradus]

1 setfsb in win

2 pll voltage helps

3 set 6x fist and find max fsb

 

and wtf, google it.

[TerraRaptor]

Pll should be as low as possible for 45nm from my exp. Vtt will definitely help at higher fsb. And GTL refs are crucial for quads.

[ObscureParadox]

as TR said, keep PLL low, 1.5v is min in your case I believe, increase NB volts but get a fan over it.

 

Also you need to get something better than an Intel stock cooler to overclock with so that's holding you back too.

[psycho]

I cant overcome 480 fsb, setting in setfsb, tried different voltages and ratios, btw clocked memory to the max http://hwbot.org/submission/3030960_

[xxbassplayerxx]

The P5K isn't the most capable board out there. Does it allow GTL tweaking? If so, check into this thread:

 

http://www.xtremesystems.org/forums/showthread.php?202292-How-to-set-up-GTL-Ref-Values-for-45nm-amp-65nm/

[Massman]

P5K was an amazing board for the price (at the time).

 

Used it with the Core 2 E6300 back in the day. 515FSB on air and 630FSB on LN2

[xxbassplayerxx]

But he's pushing a quad!

[Alpi]

Yes ! 775 quad oc is about Gtl-s from near 500 fsb. From here You have to increase Vtt voltage usually. I don't know how much is the base voltage for it in that board. Without gtl setting (and skew-s even) I think 480 - 500 is the upper level but it depends how well can the board and the cpu can work together. P35's Pll should be enough for even much higher clocks I think. You can try raise Vtt higher than the cpu needs it. Maybe You can raise 5-10 fsb if the reference voltages moves the right way. It's not the nicest way, but someday it helps a bit.