Is it possible to overclock and retain Cool n' Quiet?

[Fox5]

I've heard that Cool n' Quiet only works on a processor if you keep it at stock speed....but why should that be so? Shouldn't it still be able to lower the multiplier regardless of what the memory bus is set at?

 

[Yuriman]

Correct me please, if my information is incorrect, but I believe Cool n' Quiet works fine when you overclock. Any HT changes you make keep their effect, and CnC will still raise and lower your multiplier.

 

[GuitarDaddy]

Yes it works fine with overclocking, I have my SD3700+ 2.2ghz set where it throttles down to 1.55ghz/1.1v when at idle, and up to 2.8ghz/1.45v under load.

If you let windows do the throttling it sucks, if you use a program like RMclock from rightmark it works very well.

The only problem I've seen is that with C n Q enabled it limits the max bootable HTT.
In my case with it enabled my max HTT is 256-257, with it disabled I can boot to 320+.
This wasn't a problem for me because with the 3700's 11x multi I can still get my max overclock of 2.8ghz with 11x255. But for people with 3000's or 3200's that overclock well not being able to use a high HTT would probably knock 200-400mhz off their max overclock

 

[rise]

GD is that htt limit a board specific issue? i thought i saw someone say he had c&q working with a 300+ htt?

thats sweet btw running your 3700+ at 2800 with only 1.45v. i need 1.54, probably a bit less, but with c&q i need to do the 1.4+110%

 

[GuitarDaddy]

It may well be, I'm using the A8N-SLI deluxe. The Asus doesn't have adjustable chipset voltage, you may be able to get around it by bumping the chipset voltage.

And the 1.45v is per RMclock and Clockgen. CPU-Z and Asus utilities show 1.57-1.58, in bios its 1.55v. I still don't know which is correct, but I suspect its 1.57-1.58

 

[rise]

ahh, thanks!