Does anyone know how to control ASUS C90S fan speed?

My friend Kate has an ASUS C90S

The processor reaches temperatures from 70-85C. The 8600GT idles at 73-80C, and rises to like 95C when gaming. She asked me if I could do anything. I undervolted the cpu, but I cant get the temps down.

I took the lappy apart, and I measued the voltage going to the 4 fans. The voltage is 4 volts. The fans are 12volts.

The turbo gear program does not seem to allow you to control the fans.

Does anyone know how to force the fans to full speed?





In the bios it says that the fans are running at 3300 rpm. I looked up the fans, they are made by Delta Electronics and have a 9500rpm rotation speed. All four of the fans combined have a very low cfm output. Each fan supposedly pushes 13cfm, but at 4 volts they only move like 3cfm.

I opened the laptop up, and the only thing I could do is find a 12volt source, and hard wire the fans to it.

There has to be some other way to contol the fans?

K-TRON


K-TRON

 

I have the same question. They keep talking about how great these fan are and how noisey they can get when they really don't do much and are rather quiet. I would also like to learn how to turn up the fans to make them circulate more air. I also use an Antec Intercooler to help keep my laptop cool during gaming.

 

Just wondering, what CPU was in it?

 

my friends laptop has a Intel E6700 2.66Ghz dual core processor.

It is actually stupid the way ASUS designed it. You will notice that as the faster processor is installed the cooler the system will run. How could that be?
The gpu has no say in turning the fans on, so your gpu can hit 130C and the fans wont come on. The only way the fans will turn on, is if the processor is running hot. This is why some say it overheats and some say it doesnot. Those who say it doesnt have teh 2.93Ghz core 2 extreme, which gets much hotter. Once the cpu gets hot, the fans will stay continuously running until teh temps drop enough. Since the E6700 does not get that hot, the gpu continually heats up, and finally it melted. The faster processor gets hotter and turns the fans on, and keeps everything cool.

K-TRON

 

I got E4500 and yeah that's annoying, even under 100% load with fans almost not running, it will stay arround 65.

I tried to switch the fan connectors on the motherboard and for whatever reasons, the 3 cpu fans (connected on the VGA cooling port) spinned like crazy with a game opened.

Now that I switched them back, they run while gaming so it stays at 97. Looks like it's on a good mood today. I suspect the VGA fan not running still

 

In your sig it says 8W idle, how did you come up with that, that is physically impossible. The E4500 has a 65watt power consumption. SInce it runs at 0.85 to 1.50 V, that means that the amperage of the processor is 43.3333 Amps. Even at 0.850V, which is the stock idle voltage your processor consumes 36.83 watts.

You would have had to undervolt your processor to 0.1846volts to get 8 watt idle. However you calculated is wrong.

Anyways, it is better off not undervolting the processor in the c90s because the hotter the cpu runs the faster the fans spin, and thus the cooler the system runs. If you notice, when you overclock your system with turbo gear, you will see that the processor does get hotter for a minute, but then the fans kick in and they stay on cooling the system down.

K-TRON

 

That's what Ken of gentech told me a while ago xD

Mine doesn't even heat more on gaming mode (OC is crash, I should send it to get the lastest mothetboard that actually supports my CPU).

It seems like on mine, the fans go with the CPU load. I'm running folding@home right now on gaming mode, they spins a bit faster than paying a game normally. 3Dmark06 makes them kick at MAX though. Load is 50% on each core and temp is 54-58C.

My GPU is now at 69C, I like that number


I also noticed that when I play a game, if I alt-tabbed it, the CPU temp goes from 60 to 70C is 1-2 seconds and then fans start kicking, until I return to my game