Should I reapply thermal paste if my CPU gets too hot?

immortalgamer · Mar 23, 2013

I have an AMD II X4 965 BE and it's not overclocked. It's idle temperature is 49C and it never goes below that. Also, it's fan makes a lot of noise, which I think will go away once I clean the heatsink and fan.

Do I need to clean the heatsink and reapply thermal compound?

kiezz · Mar 23, 2013

your idle temperature will depend on the ambient room temperature, are you using the stock cooler? as that will be quiet loud anyway but definitely if its been a while since you cleaned your system then blow dust out of your whole case, and make sure you have adequate airflow going through the case,
if you remove the heatsink it will need new thermal paste to be applied,

geofelt · Mar 23, 2013

I think you have a problem that needs fixing unless your room is at 35c. (95f) or hotter.
The fan is spinning up because the motherboard detects a very hot cpu.
Most likely, it is a failed cooler mount.
Take off the cooler, and clean off the old paste from both the cooler and the cpu with alcohol and a lint free paper such as a coffee filter.
Reapply the paste, being careful to not use too much. A drop in the middle should do it. Too much paste will act as an insulator. If you want quiet, perhaps you should buy a tall tower type cooler with a slow turning 120mm fan.
A CM hyper212 or Xigmatek will be about $30.

immortalgamer · Mar 24, 2013

geofelt :

My room temperature is like 20C so I guess I do need to reapply thermal paste. Also, I'm using the 80mm stock cooler that came with the CPU. Should I replace it with a better one?

logang · Mar 24, 2013

what program are you using to monitor idle temps?

geofelt · Mar 24, 2013

immortalgamer :

Something is wrong.
Not much can go wrong if the stock cooler fan is running.
You could remount the cooler, and you will likely resolve the issue. It will cost you about $8 for a tube of AS5 paste.
Instead, I think I might buy a cooler like the cm hyper212. It is only $20 after rebate: http://www.newegg.com/Product/Product.aspx?Item=N82E16835103065
It has a backplate mount, so you need to be able to access the back of your motherboard to install it. It comes with paste.
The big advantage to me, more than the better cooling, is that it will run quieter.

immortalgamer · Mar 29, 2013

logang :

Core Temp.

immortalgamer · Mar 29, 2013

geofelt :

immortalgamer :

Something is wrong.
Not much can go wrong if the stock cooler fan is running.
You could remount the cooler, and you will likely resolve the issue. It will cost you about $8 for a tube of AS5 paste.
Instead, I think I might buy a cooler like the cm hyper212. It is only $20 after rebate: http://www.newegg.com/Product/Product.aspx?Item=N82E16835103065
It has a backplate mount, so you need to be able to access the back of your motherboard to install it. It comes with paste.
The big advantage to me, more than the better cooling, is that it will run quieter.

Unfortunately, remounting the cooler didn't do anything. So, I guess I need to get this cooler you mentioned.
But just out of curiosity, what should the idle temperature of this processor be?

geofelt · Mar 29, 2013

I would think in the 35c range.
Your cpu is an older generation that will run hotter than the newer 22nm based chips.

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