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How often the CPU fan comes on under normal use

B

bobbyz

Member
Just put together my first system using E4300 on DS3 rev 3.3 board. When I turned it on, the CPU fan wouldn't come on. I was scared but then read online that CPU fan would come on only when needed. It did come on for short time when I was installing WinXP. But it remained off when I was updating to sp2.

I am going to download temp monitoring programs and see what they report. HS is cool to touch. I am using Artic Freezer Pro 7.
 
The fan for the CPU should be on all the time as far as I know. I haven't seen one desktop system where the fan intermittently shuts off...that might be true if one was running a fanless setup, but I know from experience that the fan on my Freezer 64 Pro NEVER shuts off completely even under motherboard management. I once tried running the heatsink with the fan off and temperatures got to 50C idle very quickly. You might want to keep a close eye on temperatures and fan speeds while you are in Windows and running various apps. If the fan does not come on under load, then you've got a problem.
 
Mine doesn't go off either, but I manually control it. You'll have to find out how your mobo's CPU fan control works to figure out why it goes off. It's just possible that it drops to a voltage that's too low for your fan to run. I'm not sure what the working voltage range for the fan they put on the freezers is.

.bh.
 
I don't think that it's that unusual. My last mobo (eVGA NF41) had excellent fan control. Combined with the fact that my PC is in a Michigan basement, the fan only came on when I got above ~50% CPU usage.

However, I would agree with the other two posters that you should get a temp monitoring program just to be sure.

-red
 
Just looked at CPU temps reported by the BIOS and they were under 29 deg. C. Fan remained off when I had the computer ON for short time. Will do more thorough testing over the weekend.
 
You could have something like cool and quiet turned on in bios programs in mobo like that have been known make a fan stop running if it doesn't feel it needs it.
 
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