Laptop CPU Heat

bring1t

Anyone know anything about Laptop CPU heat?

My problem is that sometimes my laptop justs shuts down (no warning), the cpu is a 1700 pentium M and runnin Win XP.

I have got an app to monitor the temp and it ranges between 50-65 degrees C running on battery, and then 80-95 degrees C when plugged in. When plugged in the fan is on most of the time.

Is this normal behaviour?

Thanks, Richard

alanrowell

Needs a good vacuuming around the fan outlets or the cooling fan is knacked

Joe_Bloggs

As alanrowel says. Is the air intake situation different when the device is plugged in (ie charging/saving the battery)? What are your typical applications when reaching these temperatures. This behaviour would worry me but I don't have a laptop.
Do you have options available to throttle the CPU activity as the temperature rises ? Does the CPU have the correct core voltage? Can you determine what it is and if it matches your CPU ?
J_B.

deary65

http://www.majorgeeks.com/SpeedFan_d337.htmldownload this little utility,you will have to play around a bit. But read the help files.Also check that power management is on laptop.

drlight_2

Laptops depend more on the outside environment as desktops have a fan and cooling space inside the case it keeps a steady temperature depending the the CPU load. Laptops transfer the heat from the CPU to the outside, mine used to get hot if I placed it on a cushion.

NellyLock

it may be worth having a look at something like this->
http://www.maplin.co.uk/module.aspx?ModuleNo=29973&doy=30m5
my girlfriend got one of these cause her laptop was running V.hot. not an ideal solution for portability but if ur laptop stays fairly static maybe worth a look into

(thats not a referal url btw)

Joe_Bloggs

For a passive solution try http://www.richmondcookshop.co.uk/html/pans_special_grill_ridged.html
You might need a heat resistant place mat underneath.
J_B.

£$&*"($£&(

Although Pentium-Ms can cope with being very hot I thought the idea was that they tend to run cooler and require less cooling. It does seem to be too hot and with an excessive amount of fan use. Are you running particularly demanding programs?

bring1t

Thanks for your suggestions.

But as the laptop is only 8 weeks old I think I am going to have to return it, I currently don't do any demanding things on it, just surfing etc and this can't be right.

Does anyone know of any apps you can use to see if you have a hardware problem that could be causing this? such as CPU/RAM etc.

blinky

Unlikely to be RAM. It could well be a faulty program/task which is causing the CPU to run at 100% all the time. (CTRL-ALT-DEL to bring up taskmgr)

newfoundglory

I installed this on my 1.8GHz M centrino the other day... http://www.pbus-167.com/chc.htm

Its an amazing little app... I suggest you try it. It tells you the current temp of the processor, hard drive and case. It also allows you to modify your laptops fan control if it supports it, and the processor dynamic clock switching for different power (battery/mains).

It also shows you how the processor is speedstepping and its voltage... so the processor only steps up in clock speed when it needs it (mine is usually on 600Mhz... and steps up through a number of different clock speeds before hitting 1797Mhz, showing you how the voltage changes and the temperature).

My processor is usually around 44-47 degrees (40 when i'm doing nothing, 50+ under load... and 60+ if i am playing a game). 90 for just being plugged in sounds very hot indeed.

The program also tells you the ACPI themal zone information... it says my processor doesnt reach critial temperature until it hits 120 degrees, and active cooling starts at 65 degrees.