Q6600 -max FSB is now 330 ??

[lemonyx]

My first "gaming" PC (see sig) built back in May of this year. The Q6600 would scream at 3.6ghz (400 x 9). Now it won't go over 330, will not boot no matter what voltage I use.

Could it have been damaged by overheating? I did have to use another HS the TRUE and also a HR-03 Gt for the videocard to keep things cool.

Any ideas, I have tried just about everything to get the CPU back up to "speed" but just loafing along at 2.9ghz right now - max. 326 x 9

One stick of ram failed memtest so I RMA'd a set back to Cosair.

 

[aeiouandxyz]

Have you tried overclocking with just two sticks of ram? It's harder to get 4 sticks to run stable than it is to get 2 sticks to run stable.

 

[dagger]

It likely has to do with motherboard rather than cpu. Motherboard chipset, when pushed near the edge, as your p35 at 1600mhz fsb, sometimes degrade. The same is unheard of for cpu.

 

[lemonyx]

aeiouandxyz

I've had all four sticks in at 3.6ghz - so no problem there, but only have two in at this moment, as the other two are bring RMA'd

dagger

That's pretty fast for degradation, I've had the MB for about 6 mths now - it was "NIB" and other guy's are still running this same MB OC'd. The std FSB for this MB is 1333

thanks for the reply -

 

[roadrunner197069]

Well you ran it over its rated speed and ran it hot. What did you think was gonna happen?

Also what voltage did you have to run. If you were like alot of noobs and ran 1.5+ vcore, your CPU is on the end of a short life.

 

[dagger]

Well you ran it over its rated speed and ran it hot. What did you think was gonna happen?

Also what voltage did you have to run. If you were like alot of noobs and ran 1.5+ vcore, your CPU is on the end of a short life.

Different cpus have different voltage tolerances, q6600's happen to be high. Intel's official "recommended" voltage is 1.5v.
http://processorfinder.intel.com/details.aspx?sSpec=SLACR
Most overclockers of not just q6600 but also other cpus routinely set voltage higher than official recommendation of their respective chips. The amount of cpu overvolting needed to achieve similar clocks for other cpus tend to be a lot higher than for q6600, due to their lower voltage tolerance.

In any case, it's far more likely to be due to motherboard chipset or ram, rather than the cpu itself.

 

[jimmysmitty]

Chipset might have friend and is now limiting the FSB. I doubt its the chip TBH. You would have noticed throttling and the such first before it would die.

So you may want to get a new mobo and try that. Or have a friend throw your chip in his CPU and try that OC. If it works its your mobo. If it doesn't work its the CPU. But as I said before, the mobo would probably die before the CPU would.

 

[lemonyx]

roadrunniy197069

A typical know it all - this CPU never went over 1.36v to get 3.6ghz NB voltage max 1.44v for the 4 sticks of ram

thanks dagger

 

[zenmaster]

What happens if you lower the multi-plier and try to increase the FSB?
This should help indicate if you are hitting a CPU or FSB limit.

As others noted.........
Fewer RAM Sticks....
Higher RAM voltages....

 

[lemonyx]

It's runing @ 400 x 8 stable right now. Just a correct setting for the ram timing is all that was needed. The MB and CPU still have a lot of life and are NOT worn out.