p5k-e Q6600 OC Help please

Changed in bios-

8 x 450 FSB

PLL - 1.6
NB - 1.4
VCore - 1.4 (1.376 in CPU-Z, drops to 1.36 under load)

Windows shuts down unceremoniously after 20 seconds of prime.

So changed to the following

PLL - 1.6
NB - 1.55
VCore - 1.4125 (1.392 in CPU-Z, drops to 1.376 under load)

Prime failed after 1 minute.

Changed the following

VCore - 1.425

Got a Windows BSOD as soon as finished loading :(
 
It appears you Vcore is the issue. Upping the Vcore will only see a significant rise in temps in relation to you post above (31). It could also be a limitation of the motherboard. You can drop the multi to 6 and find your max FSB to give you an indicator of limitation.

Although to be honest 3.2Ghz O/C is not to be sniffed at;)
 
Sepulchre, try the following:

Vcore (Bios): 1.5v
NB: 1.55v
RAM: Are you running 2 or 4 sticks? Set them to the Max Recommended Voltage, and lossen the timmings right out, if the RAM is C4 then run it @ 5-5-5-23 at a 2T Command Rate
PLL: Auto (Might need to set it to 1.6v but no higher than that for a prime test)
PCI-E Bus: 101

you have probably just hit a bit of a vcore wall, rasing the vcore to 1.5 should push through this but you are going to have to be very careful when you run the Prime for the first time keep a good eye on your temps if the cores are pushing 70c+ then stop the prime run.. 1.5v given what vcore you are currently using is probably overkill for that clock but those settings should work for 3.6

Also when you try those settings can you make a note of your idle and load vcore? you have quite a high VID on that CPU so might limit you to the clock you can achieve
 
Cheers for the advice Pneumonic, I'll give that a go tonight when I get home or maybe at the weekend, given there is beer needing to be drunk :)

I'd hoped to get to 3.6 as this chip doesn't seem to need much vcore for 3.4 as far as I can tell. I think 1.5v on the core may well push the temps well above 70C but I'll try it and let you know, I think I'll disable the Q-control of the CPU fan in the bios and let it run at 100% for this test as it never seems to spin up that much with Q-control turned on even when the core hits >60C.

I'm running 2 sticks of this - http://www.overclockers.co.uk/showproduct.php?prodid=MY-072-OC&groupid=701&catid=8&subcat=813
 
sepulchre said:
34qa3vs8.jpg
Click to expand...

I notice your chip says it has a VID of 1.3125v, that is quite high, the quad I have been testing has a similar VID 1.300v. I got that chip to 3400MHz using pretty much *auto* BIOS settings. . .

primecpu3400mhz003jm3.jpg


I gather those people who got a better overclock than 3400MHz have themselves a low'ish VID chip (seen some that are 1.200v). The clock above was done using an ASUS P5B-Deluxe (INTEL P965) so getting a high FSB would be harder than the P35 chipset you currently use.

I wonder have you put your chip to its normal multi of x9 and see how far it will go? You would think the multi didn't make much difference but it may well do, only way to be sure is test it and see.

If it still craps out then the lower multi and high fsb seems the way to increase performance a tad, good luck! :)
 
It does look like I got one of the higher VID chips, which is what I'd hoped I wouldn't get and kind of knew I would lol!

I'll try the 9x multi again, but (and this may be down to me being new to C2D clocking) I couldn't get it to work when trying any variation of OC with the 9x multi when I first started out. Will try to get some OC'ing today following yours and Pneumonic's advice, cheers.
 
sepulchre said:
I'll try the 9x multi again, but (and this may be down to me being new to C2D clocking) I couldn't get it to work when trying any variation of OC with the 9x multi when I first started out.
Click to expand...
Wonder why that was then? There is no reason that I am aware of where you can't overclock a chip using stock multi but can overclock it if you drop the multi?

[edit] the reason I mentioned this anyway was because I am aware that on the P965 express chipset changing the multi to a lower one can put an additional strain on the northbridge however the P35 Express chipset is a little different and I am still not up to speed with the technical differences between the two.
 
Last edited:
Hey there, i have the exact same setup as you, great minds and all that. Have you tried running 440mhz fsb? I am currently sitting at 440x8 and was prime stable for 4 hrs yday 1.328v in cpuz under load. However i cant do 3.6 no matter the volts.


Have you got your ram to boot in dual channel? Mine will only post if i put both sticks in the top two slots, one yellow one black.

edit just realised your ram is 2x1gb not 2x2gb like mine. Hmm perhaps thats the problem.
 
Last edited:
Big.Wayne said:
Wonder why that was then? There is no reason that I am aware of where you can't overclock a chip using stock multi but can overclock it if you drop the multi?
Click to expand...

Most likely my fault :o

Lil old me said:
Hey there, i have the exact same setup as you, great minds and all that. Have you tried running 440mhz fsb?
Click to expand...

Not yet but I will do later today.

Lil old me said:
Have you got your ram to boot in dual channel?
Click to expand...

Yep both running in the yellow slots.
 
Big.Wayne said:
thats loads, hmmm.

is that at any speed or just high FSB?
Click to expand...
Sorry for the thread hijack, will try and keep it to a minimum :) It wont post at stock, bios defaults loaded, with the sticks both in yellow. I originally thought one of the sticks was faulty as it booted with 1 in but its ok with 2 as long as theyre not in dual channel. Could it be because they are double sided dimms?

440x8 has been running for 3 hrs doing prime now. woo :D

EDIT: I just tried once more just to be sure and it booted up fine lol, typical. now at 445x8 :D
 
Last edited:
CyZMyAssBaby said:
sepulchre if you drop your multi to x6 and test to find the motheboards max FSB. (Save all your previous OC settings in the OC profile) and start the OC fresh using the x6 multi

can you post back your findings m8
Click to expand...

Will do m8, just back after a days shopping with the wife :( and wont now get to do any clocking until tomorrow, will let you know then.
 
You must log in or register to reply here.
Back
Top Bottom