Cannot get Q6600 to 3.6......

[Dazzlercee]

I currently overclock my Q6600 at 3.4Ghz (426x8) at 1.45 volts in bios. This drops to approx 1.38 under load. My memory comprises 4 x 1024 of Geil 800Mhz running at approx 850 Mhz. CPU heatsink is Noctua NH-12F. Temperatures under full load approx 66-67'C in a warm room with all case fans on minimum.

Out of curiosity I tried for 3.6Ghz (400x9) and could not get it stable (Orthos) even up to 1.55v on the core. Should I try 1.6v or a bit higher or have I hit a wall with my CPU?

TIA

 

[Dazzlercee]

Raise your NB voltage a notch or 2. You are overclocking 4 memory banks which will put a lot of stress on the memory controller.

It is a B3 stepping.

Noob Question:

Is the NB voltage the MCH Voltage or something completely different?

 

[Dazzlercee]

Are you using coretemp to read these temps??

I am using CoreTemp, Everest and Speedfan (+15'C).

I have just been running Orthos at 3.6Ghz 1.575 (1.50) vcore. Temps got to about 72'C after 20 odd minutes when I ended the test. I am happy with this for the moment BUT I will keep a close eye on temps as weather gets warmer.

FSX is really the only CPU intensive software I run so I doubt it will ever get stressed to the extent of Orthos.

If I have any probs I will revert to 3.4 as this has given me no problems over the last 6 months or so.