What does cool n' quiet do?

[OzzieGT]

Do the AMD "Athlon Processor Drivers" do anything besides control fan speed? Just wondering if I should remove them because I think my MB will do a better job of regulating the fans than cool n' quiet...

 

[JBT]

It speeds up and slows down the CPU depending on CPU needs.

 

[mechBgon]

Cool 'n Quiet regulates processor speed and voltage. At idle, my 2.0GHz A64 drops to 800MHz and 1.3 volts if C'nQ is enabled, for example.

The lower heat production at 800MHz & 1.3 volts might cause the CPU temperature to drop far enough that my mobo decides to turn off the CPU fan, if I've got the fan-controlling feature turned on in the BIOS. But the fan is not turned off by C'nQ itself.

Personally, I just leave Cool 'n Quiet disabled so the CPU runs at 2.0GHz all the time.

 

[mettleh3d]

so if I were to enable CnQ in the BIOS, at idle times the temp wud drop, CPU wud slow, and the CPU fan wud stop? Cool.
Are there risks? Kinda like powering up HDDs if you set them to spin down? Voltage up and down cant be healthy im guessing.
Also, does the Mhz jump back up from idle to full load quickly?

thanks

 

[imported_whatever]

Originally posted by: mechBgon
Cool 'n Quiet regulates processor speed and voltage. At idle, my 2.0GHz A64 drops to 800MHz and 1.3 volts if C'nQ is enabled, for example.

The lower heat production at 800MHz & 1.3 volts might cause the CPU temperature to drop far enough that my mobo decides to turn off the CPU fan, if I've got the fan-controlling feature turned on in the BIOS. But the fan is not turned off by C'nQ itself.

Personally, I just leave Cool 'n Quiet disabled so the CPU runs at 2.0GHz all the time.

The odds of the CPU fan actually turning off are fairly low, but with C&Q on, the CPU will put out enough less heat that the CPU fan will run at a lower speed if you have your mobo set to adjust its speed based on temperature.

 

[mircea]

Wow mechBgon, yur voltage stays pretty high. Mine drops to 1.07V at 1000MHz and I also have the 2.0GHz 3200+ A64.


The CPU does an almost instant jump back to full speed if needed.

 

[imported_g33k]

Well this is a good thread to post this question. When overclocking is it better to turn on Cool and Quiet or leave it off?

 

[knothead34]

when over clocking you want cool and quiet off. it will interfere with your over clock.

 

[klah]

CnQ is not involved in monitoring or adjusting fan speeds, that functionality is delegated to a thermistor controlled HSF or the motherboard(Ausu Q-Fan)

http://www.amd.com/us-en/assets/content...s/Cool_N_Quiet_Installation_Guide3.pdf

4. Required for noise reduction: Heatsink/fan capable of speed control

All AMD Athlon 64 Processor-In-A-Box packages include thermally controlled fans. A thermally controlled fan detects the current temperature of the processor using a thermistor, and when a lower temperature is detected the fan speed and noise is then reduced. Upon detection of a higher temperature the fan speed is resumed at full speed to appropriately cool the processor.
If an AMD Athlon 64 Processor-In-A-Box package is not used, an appropriate 3rd party heatsink with a thermally controlled fan must be used.

 

[mechBgon]

Originally posted by: mircea
Wow mechBgon, yur voltage stays pretty high. Mine drops to 1.07V at 1000MHz and I also have the 2.0GHz 3200+ A64.

My 2.0GHz is an old Clawhammer core.

 

[imported_g33k]

Originally posted by: knothead34
when over clocking you want cool and quiet off. it will interfere with your over clock.

Ok but how about after you are done tweeking it? Wouldnt it be better to enable C n' Q and get the benefits of lower voltages and cooler operation?

 

[Lysawy]

IF At stock speeds use your cool and quiet specially when your computer is on 24h a day

works for me because my room temp. now since the heat wave are in to upper 80's



Temperatures
Room 29c 85F
Motherboard 35 °C (95 °F)
CPU 40 °C (104 °F)
Maxtor 6Y120P0 31 °C (88 °F)
Seagate ST3200822A 37 °C (99 °F)
WDC WD740GD-00FLA1 34 °C (93 °F)

Cooling Fans
CPU 1318 RPM
Chassis 1164 RPM
Power Supply 1288 RPM

And its quiet real quiet ....

 

[OzzieGT]

Is there any way to log CPU speed over time so I can check to see if it's working when I get home from work?

 

[JDCentral]

Originally posted by: g33k
Ok but how about after you are done tweeking it? Wouldnt it be better to enable C n' Q and get the benefits of lower voltages and cooler operation?

Why would that help? It dynamically changes the clock speed based on usage.
So... when it's idle, the chip will run with 'lower voltage and cooler operation', but when you're running Doom 3, encoding a video, and streaming your mp3s from your fileserver, the CPU is still going to be running at high(er) voltages and get much hotter.

 

[imported_g33k]

Well since overclocking shortens the lifespan of a chip, especially if you crank up vcore, it might be better to enable C n Q. It may lengthen the life of your chip. Isnt that the whole point?

 

[furballi]

There is NO logical reason why one cannot use C n Q with an overclocked machine. The system will dynamically bump up to maximum speed when required.

 

[Budman]

Originally posted by: knothead34
when over clocking you want cool and quiet off. it will interfere with your over clock.

that's funny, I have been overclocking for a while with C&Q enabled & it hasnt cause any problems at all for me.

 

[Theguynextdoor]

I've been running cool'n'quite for over a year now. One time my friend noticed that my HSF was off. We were both like S**T! and I started to turn off my computer, then it started up again! Crazy stuff. And yes it does overclock fine.

 

[dwcal]

Yeah, shouldn't be a problem. CnQ just changes the multiplier. If you OC the bus speed, you'll OC the clock speed at the lowest multiplier too.