[Ken B.]

I've got a single core 2.6Ghz A64 I want to overclock to maybe 3Ghz if I can. Does this affect Cool N Quiet in any way? Or will it operate as normal?

[Psykoikonov]

If you leave the multi and voltage on auto and just increase the fsb it works. If you set the multi and or voltage it will not change whichever one is set. Atleast thats the way it has worked on the board I used. I increased fsb to 225Mhz and left everything else on auto and it would drop to 225x5=1.125Ghz and 1.15v.

[Malakai]

I can change voltage on any component, but cannot change the multi from auto.

PhenomMSRTweaker should let us use it while multi oc'ing, but it doesn't work on vista64 for me.

[Psykoikonov]

Originally Posted by Malakai

I can change voltage on any component, but cannot change the multi from auto.

PhenomMSRTweaker should let us use it while multi oc'ing, but it doesn't work on vista64 for me.

If you set the voltage will it still drop the voltage when it lowers the multi? I'm fairly certain mine didn't have I'll have to check again.

[Ken B.]

Originally Posted by Psykoikonov

If you leave the multi and voltage on auto and just increase the fsb it works. If you set the multi and or voltage it will not change whichever one is set. Atleast thats the way it has worked on the board I used. I increased fsb to 225Mhz and left everything else on auto and it would drop to 225x5=1.125Ghz and 1.15v.

How did you determine that? Is there a utility that tells you how the CPU is working realtime?

BTW, the 2.6ghz CPU is just an A64 I'm using on another system. Pay no attention to my sig.

[Psykoikonov]

Originally Posted by Ken B.

How did you determine that? Is there a utility that tells you how the CPU is working realtime?

BTW, the 2.6ghz CPU is just an A64 I'm using on another system. Pay no attention to my sig.

CPUz<- I used this.

[Malakai]

Originally Posted by Psykoikonov

If you set the voltage will it still drop the voltage when it lowers the multi? I'm fairly certain mine didn't have I'll have to check again.

Yes, it drops it to its default +/- your voltage modifier set in bios.

[mollymoo]

My cool and quiet gets disabled automatically the second you change anything to do with the cpu from auto to manual but I also disable it aswell.

[QuietIce]

Originally Posted by Ken B.

I've got a single core 2.6Ghz A64 I want to overclock to maybe 3Ghz if I can. Does this affect Cool N Quiet in any way? Or will it operate as normal?

That depends a LOT on the motherboard and BIOS. When I first started OC'ing my Opty 180 I was running 225x12 @ 1.45v. You can see right away those are NOT stock settings but CnQ worked just fine for over a month (when I started Crunching again I disabled CnQ - no unused cycles after that! ). At the bottom end the system set the processor down to 6x and dropped the vCore down to 1.05v (IIRC - it's been awhile). There were no harfware/OC issues at all using CnQ with my A8N32 and OC'ed Opty 180 - it worked exactly as is was supposed to.

However, there is a catch. SuperPi times went up 10% when CnQ was enabled. As CPU-Z seemed to show there are unused (or maybe under-used is a better term) cycles even when running something like SuperPi 32M. CnQ didn't kick in running P95x2 but the single-threaded SuperPi left enough idle time CnQ would drop the CPU to 9x off and on during processing.

Conclusion? CnQ works fine with an OC if you have the right motherboard - but you may also see a slight degradation of performance in apps that don't push the CPU 100% ...

[Psykoikonov]

Originally Posted by Malakai

Yes, it drops it to its default +/- your voltage modifier set in bios.

Just checked my M2N32-SLI and if I manually set the voltage then CnQ does not change it. It will however still drop the mutli just the voltage stays at whatever I set it to .

[QuietIce]

Do you use the CPU Core offset voltage? I'm trying to remember exactly how I set my vCore for that one month. If any board will run it like the A8N32 it's the M2N32 - it's AM2 successor ...

[Psykoikonov]

There is a manual set and a voltage offset of +200mv, problem is the board over volts really bad. Currently I have it set at 1.2125v (+200mv offset disabled) which translates to 1.25v. If I set it to auto then it's 1.31v again with the +200mv offset disabled. I have tried the 200mv offset and it's more like 300mv . If I set it to auto and offset enabled it's 1.6v :O. I'm using a 4200+ G2 that will run at 3.0Ghz on 1.3v but I need to get a better cooler as the Tuniq Tower it was under is now cooling my 720BE. Currently the 4200+ is at 2.4Ghz but setting to auto makes 1.31v and almost 60C load where if I set to 1.25v temps come down around 55C.

[QuietIce]

Oh, my bad. Didn't know you were under-volting. Still, if it lets the rig run slower/cooler when it's idle ...

[Psykoikonov]

For now it's crunching, if it weren't it would work. It's crunching temporarily.

[QuietIce]

Let it crunch on! I saw where you snagged the top RAC in Einstein ...