Q6600 Refuses to OC

[Robert]

Right...

A few months ago my Q6600 ran at 3.2ghz happily (prime stable).

I then ran the Intel Linnpack test which proved it to be unstable.

I then ran at 2.8ghz stable.

Just after New Year I added an XFX Revo64 SATA card. Since then I have been unable to overclock at ALL.

If I set it to anything above 2.4 is resets to 1.87ghz.

Removing/moving the card is not an option. I'll hold off getting a new motherboard and go straight to an i7 when I can afford it.

However if I can get my chip back to 2.8 I will be happy!

I have tried:

• New bios
• Resetting the bios
• Different multipliers
• Auto voltages/tweaked voltages

It's a real PITA!

 

[Vince]

pci lock?

 

[Robert]

My motherboard automatically locks the PCI speed to 33mhz.

Thanks anyway.

Just managed to get it to boot with 400*7/+0.3MCH voltage but if I restart or shutdown it resets to 1.87 for some reason.

 

[IAmATeaf]

If it's the mobo listed in your sig then have you tried upping the NB volts, I had an old P965 DS3P which used to do this and upping the NB helped.