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My colleague is using a Fujitsu Esprimo E900 (VFY:E0900PXG11NL) desktop PC that revs its fan every couple of minutes when a CPU core hits 70 degrees Celsius according to SpeedFan 4.51. Enabling "Automatic fan control" in SpeedFan doesn't help much (Is it still learning? Does not being able to show fan speeds affect it?).
The CPU is almost idle and there's no apparent dust in the case and another colleague says it's always revved. Is there a BIOS setting to control the fan speed?
Room temp is 25 C and desktop is clear. HDD temp is 40 C and average idle core temp is 60 C.
It appears that the fan can be controlled:
Special Features
Silent Fan - Independent temperature related processor fan and system fan supervision and control
System Guard - View and adjust Silent Fan features
Unfortunately,
Enhanced
mode makes the front fan rattle (otherwise it would be the answer), Silent
mode doesn't help, and Disabled
makes it sound like a vacuum cleaner. I could ask the hardware guy about the thermal paste but all stock paste i've used lasted much longer than this and it seems all fans are entirely off until needed.
My colleague is fine with the revving on Auto
, so i can't test SpeedFan again while BIOS fan control is disabled.
How old is this PC? Is this a new problem? What's the ambient air temperature? Are all intake and exhaust vents clear and unobstructed? Is there at least 12" of open space in front of every vent? Is the PC in a cabinet, bookcase or under a table? – sawdust – 2015-09-23T09:21:05.400
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70 degrees Celcius is quite hot for an idle CPU, in fact, it's quite near the TCase of 72.6 for the i5-2400. Assuming it's a pre-assembled machine, given the brand, you can't replace the thermal paste or cooler?
– CodeCaster – 2015-09-23T11:04:16.543Do what @CodeCaster has said above here, replace thermal paste and cooler to something that will fit and cool more efficiently. That should fix the problem long term and give extended life to the hardware itself by getting the temps down. – Christian Isaksson – 2015-09-23T13:00:48.740
It's from late 2011.
– Cees Timmerman – 2015-09-23T13:03:21.730Sounds like an AMD processor? – Moab – 2015-09-23T23:03:57.900
@Moab, CPUs don't make noise, and it's an i5-2400@3.1GHz. – Cees Timmerman – 2015-09-24T07:41:21.063
I know that, AMD's run hotter than their Intel counterparts. – Moab – 2015-09-24T11:48:41.370
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possible duplicate of Utility to manipulate speed of fan in Windows 7
– Cees Timmerman – 2015-09-24T11:52:06.727Now the answers are in the question. – Cees Timmerman – 2015-09-24T16:05:48.490
@CodeCaster, Tcase is much lower than my Tcpu, else the heatsink would be useless. – Cees Timmerman – 2015-10-05T10:54:33.643