Q6600 overclock - applied to only 2 cores?

Barno · 27 Aug 2011 at 13:12

I've just overclocked my Q6600 G0 to 3.4ghz. In cpu-z the processor speed is shown as 3.4ghz but in open hardware monitor only cores 1 and 2 display the overclocked speed while 3 and 4 are shown to be running at stock speeds. Has anyone else encountered this before? Is it a bug or are 2 of the cores not taking the overclock?

My motherboard is an Asus P5KR. Speedstep and C1E are turned off.

Cheers.

ScratchFive · 27 Aug 2011 at 13:15

never heard of this, but check out some other frequency measurement tools to see if they say the same, this will reduce the odds of this being a software bug.

jimbobaggies · 27 Aug 2011 at 13:46

@Barno

I would be interested to know your BIOS settings, as I have a similar Mobo / CPU setup and am thinking of overclocking. Did have a try ages ago, but gave up due to lack of time.

TIA.

Barno · 27 Aug 2011 at 14:40

Well cpu-z says that all cores are functioning and that the speed is 3.4, as does windows 7. Although neither of those tools break the speed down into individual cores.

Barno · 27 Aug 2011 at 15:48

Fixed it - fiddled about with the bios and disabled a few settings. All 4 cores @ 3.4ghz now

jimbobaggies · 27 Aug 2011 at 17:32

Good show old bean...

What multiplier / clock speed have you set, and what RAM type and settings are you using?

Would be greatly appreciated

I was running at 3.2GHz, 8*400MHz, but was unsure of how high I could push the vcore, and every so often the overclock would fail and reset on boot. I hear the mobo I have may be affected by vdroop? Also tried 9*333MHz ~3GHz seemed more stable.

BTW, my chip is SLACR G0 stepping with VID 1.325.