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Thermal Paste

Last response: in CPUs
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March 20, 2010 11:25:36 PM

So, I'm getting a new heatsink fan, and I'm wondering if it's okay to reapply the thermal grease...

The CPU already has some of the thermal grease from the STOCK INTEL HEATSINK FAN WHICH I PREVIOUSLY USED.

So, I'm wondering is it okay to just put thermal grease on it? Or do I have to rub it off?

More about : thermal paste

a c 105 à CPUs
March 20, 2010 11:27:25 PM

clean it off then apply a new thermal paste
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a c 207 à CPUs
March 20, 2010 11:28:02 PM

you should clean it with a soft cloth and rubbing alcohol to remove the old stuff, then apply a small amount of new thermal grease, you dont need much as it squishes and spreads out to cover the whole CPU. Removing the old stuff first ensure good contact which will give you better performance.
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a c 102 à CPUs
March 21, 2010 3:06:50 AM

This might be a good opportunity for you to polish (lap) the base of the new heat sink - leave the CPU alone. I polished the base of my HS and obtained a 5 deg to 8 deg drop in temps (running similar apps).

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March 21, 2010 1:38:58 PM

What if I just put the thermal paste over the old thermal paste, or don't put any thermal paste at all, what effect will it put on the CPU?
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a c 207 à CPUs
March 21, 2010 1:47:34 PM

If you put no thermal paste at all and just have metal on metal contact you will only get a small fraction of the heat transfer capabilities because of all the air gaps, your CPU will overheat and either shut down the system or die. Putting the new stuff over the old stuff will give you better than none at all but still not good, it will take slightly longer but your CPU will still overheat fairly quickly.
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a c 105 à CPUs
March 21, 2010 1:49:14 PM

at best your CPU will run very hot, you may shorten the life of the CPU, and your PC may shut down when when the CPU is at load

at worst, you fry the CPU and it no longer works
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March 21, 2010 4:23:20 PM

Where can I get the Rubbing Alcohol? What's the price of it?

I heard it has to be more than 70%.
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a c 105 à CPUs
March 21, 2010 4:45:05 PM

nitrogen521 said:
Where can I get the Rubbing Alcohol? What's the price of it?

I heard it has to be more than 70%.


walmart, walgreens, cvs, target, etc., goes for $1 a bottle under the generic store brand
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March 22, 2010 1:31:17 AM

For the CPU, what do I use to get off the thermal paste, and how much pressure?
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a c 105 à CPUs
March 22, 2010 1:37:54 AM

lint free cloth or coffee filter, a dab of isopropyl alcohol and it will come right of the cpu. You dont need a lot of pressure.
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