WHOA!!!!

[Theguynextdoor]

About a week ago. Anyways while surfing the forum I peered into my Tsunami case to admire my beatiful setup, then I noticed the HSF was not RUNNING!

I went crazy! Booted up MoboMonitor expecting temps in the 60's-70's. Saw that it was at 53. Jumped on a new thread was gonna ask for help before shutting her down. Just as I was about to post I looked into the case again. It was running again!

Thinking I had a defective fan, I looked at my MBM and it was back down to 45. Watched it for awhile, when it reached 40 the fan turned off again!

Amazing! I didn't know CNQ turned off your fan too.

Pretty cool.

 

[KDOG]

What hardware is this? Can you give specifics? THat sound like a pretty neat thing. I just have a big 92mm fan that I hooked to a controller... to keep it quiet.....

 

[Theguynextdoor]

Here is my setup with the OCZ psu.

A64 3200 NC
Asus K8V SE Deluxe
512MB Corsair XMS Pro
Hitatchi Deathstar 80GB SATA w/ 8MB Cache
GeForce 5600 128MB RAM and 64-bit interface
CD burner
DVD-ROM
Floppy
Fans that came with my Tsunami case.

BTW I recently OC'd it too, but did not turn up the voltage.

Also my case has 2x 120mm fans and 1x 92mm fan.

 

[Demo24]

yeah its a BIOS feature. mine will probably never turn off unless I stick my rig outside at night you can change when it turns off and where it blows full

 

[Theguynextdoor]

When it blows in full and no CNQ, it cools all the way down to 36! Nice!

Oh, and I'm not using the Stock HSF BTW.

 

[Zepper]

Abit has AbitEQ on some of their mobos which does roughly the same thing. When we had a few relatively warm days recently I would hear little boops and beeps coming from the mobo speaker as EQ was slowing down or speeding up my CPU fan. My CPU generally runs about 9 deg C higher with EQ on, but still stays under 40 running a stock speed Duron 1600... The feisty70mm fan on my CPU runs a lot quieter (3500 instead of 4500+ rpm) too, and I don't have to mess w/ a manual control any more.

.bh.

 

[sharkeeper]

Cool N Quiet is kind of an oxymoron; I mean if the fan is cycled on and off the average temp is higher than if the fan runs continuously.

I'd rather have the fan on all the time or have the speed continuously modulated with a proportional-integral derivative (PID) controller. Problem is they make the fans whine like a cat in heat unless you spend a lot of money on one that was designed for non interfering use.

Cheers!

 

[VirtualLarry]

Originally posted by: sharkeeper
Cool N Quiet is kind of an oxymoron; I mean if the fan is cycled on and off the average temp is higher than if the fan runs continuously.

I'd rather have the fan on all the time or have the speed continuously modulated with a proportional-integral derivative (PID) controller.

I agree, I find it easier (from a noise-perception point-of-view), if the noise is just a sort of soft continual droning, like white-noise. As long as it doesn't have any annoying high-freq harmonics in it, I personally find that I can get used to it fairly easy, and then I don't notice it all all - unless the noise changes characteristics. So I think that a fan-controller that changed fan speeds or entirely eliminated them part of the time, would drive me crazy! I already notice, when I have the sides of my case off, when the fans slow down slightly under load.

I'm not familiar with a "PID"-style fan controller, are those different than the usual sort of PWM circuits? Something more akin to those "fuzzy logic" accelleration controllers that are popular for elevators over in Japan?

Originally posted by: sharkeeper
Problem is they make the fans whine like a cat in heat unless you spend a lot of money on one that was designed for non interfering use.
Cheers!

I tend to find that sleeve-bearing fans "whine" moreso than ball-bearing ones, and while some of the ball-bearing fans are rated at a higher absolute dBm rating, they noise that they produce is more consistant and less noticable (to me), whereas sleeve-bearing ones when they start to wear slightly tend to generate annoying high-freq sound components, even though their absolute dBm ratings out of the box may be lower. (IOW, I'll take a "noisy" Sunon or GlobalWin dual-ball-bearing fan any day over a sleeve, the noise generated just sounds like white-noise to me. Plus, they keep my system constantly cool.)

However, I've started to realize just how much "white noise" that is, when I have my computer off, and there is nearly absolute silence instead. Seems kind of empty too, in a way, perhaps that's why I leave my computer on all of the time. The white noise fills the silent void.

 

[Budman]

cool & quiet doesnt turn fans off that's a feature of your motherboard,not all boards do this.

All that Cool & quiet does is lower the multiplier & voltages when full cpu power is not needed.

 

[sharkeeper]

Most controllers use PWM and this causes the fans to oscillate in the audible range, sometimes very annoyingly so.

True PID is hard to implement on current commutator-less vaneaxials. Ok I've used a few but they make noises that are not pleasing to listen to in a residence.

With a free spinning A/C motor, the speed is easier to control. Typically a PID system monitors the motor draw, the temperature of the cooled medium and the air pressure inside the controlled space if this is air to air cooling. Temps can be maintained very precisely however there are a few swings both ways until the controller adjusts the span.

Blowers probably are the most effective way to get good flow in a tight area where turns may cause backpressure that most vaneaxials cannot work against. This is why you're seeing this trend on the newest high end GPU cooling solutions.

 

[darkswordsman17]

On my new DFI board you can set it to turn the fans for the CPU, system (case) and chipset if they go below a certain temp. I have them set to turn off if temps go below 25C for everything, and to turn on if they go above that temp.

25C is the lowest you can set it, and I was very happy when I was running it for the first time and everything turned on and then all the fans turned off because it was so cool in the case. I'm not too worried as my fans, the motherboard, and the PSU all have temp monitoring setup so it should catch it if one or the other fails.

My CPU idles as 25-27C so the fan just stays on all the time. I might think about changing the temps to something higher (creating a special CMOS thing that the DFI allows you to) for when I'm gonna watch a movie or something and this way it'll be nice and quiet.

 

[TomKazansky]

cool n' quiet is more like the features on the laptops, it adjusts the multiplier and fsb automatically according to the temp and hsf useage

mobo companies abuse it by "turning off" hsf automatically when cool n' quiet is on. If the fan is always on and cool n' quiet is used, it is a lot cooler.

 

[CraigRT]

mine will never come on because i crack SETI@home... 100% CPU load 24/7 365 tends to warm up the CPU at times

 

[Patrick Wolf]

Originally posted by: CraigRT
mine will never come on because i crack SETI@home... 100% CPU load 24/7 365 tends to warm up the CPU at times

So have you found any aliens yet?

 

[Viper96720]

you got smartfan enabled nothing to do with coollnquiet.