Q6600 Overclock & Timings

[clarkey01]

Was prime stable for 10 hours with 4 instances, I have a feeling it's the memory that's holding me back. I have taken a screen shot of my current memory timings, is that correct that I am running 5-5-5-15? Would it help if I went to 5-5-5-18? Would that hurt me much ?

It could also been the insanely low vcore but it's been fine up till now.

Screen

Many thanks guys

 

[Idontcare]

Was that small or large FFTs?

 

[clarkey01]

Large

 

[clarkey01]

I will relax the timings to 18 and test, how much performance will I lose from going from 5-5-5-15 to 5-5-5-18?

 

[E4300]

Non-defective Crucial B should be able to do 335MHz FSB with default 2.0Vdimm. Timing can go down to about 4-4-4-12-2T. There is no harm in testing at 5-5-5-18-2T. The root causes...heat at PWM/NB or insufficient Vcore. You'll probably need active cooling at these regions. Put your finger at the hottest region on the heat sink. If thing gets toasty after 30 seconds, then the system is overheating.

That 65nm quad will probably need more than 1.2Vcore to run at 3.0GHz.

 

[Idontcare]

Originally posted by: E4300
That 65nm quad will probably need more than 1.2Vcore to run at 3.0GHz.

Along this line of thinking Clarky, to confirm your ram is the cause of the Large FFT fails you really ought to set your Q6600's multiplier manually down to 6x while not touching anything else in the BIOS (leave Vcc, FSB, etc all the same) and then confirm the Large FFT error still occurs.

 

[Schmide]

I'm with the more V-core. My q6600 fails if the v-core drops below 1.14. Have you watched the v-drop in occt graphs?

Since you have good enough cooling, you should be able to run without problems at 1.2v on a 65nm processor.

Make sure your cpu memory ratio is set to 1 to 1, when you bump up your fsb to overclock you may cause your memory to run over spec. You really get no benefit for running higher memory than FSB.