i think that my amd cpu stock cooler was with preinstalled thermal paste but i installed another thermal paste on my cpu

[GladiatoR]

is there a problem for that? as i didn't notice that the stock cooler has preinstalled thermal paste...
thank you

 

[Toothless]

Just clean the cooler and cpu, and reapply paste. You don't want to keep reusing the same application, nor mix pastes.

 

[GladiatoR]

Just clean the cooler and cpu, and reapply paste. You don't want to keep reusing the same application, nor mix pastes.

is there any problem if i continue using them without cleaning and repaste again?

 

[micropage7]

is there any problem if i continue using them without cleaning and repaste again?

the stock paste and the paste that you add later may affect the heat transfer between the chip and the heatsink, you may risk over pasting

 

[GladiatoR]

the stock paste and the paste that you add later may affect the heat transfer between the chip and the heatsink, you may risk over pasting

according to that, you advice me to clean this and repaste,alright?

 

[Toothless]

is there any problem if i continue using them without cleaning and repaste again?

Bubbles that capture heat, horrid contact, etc.

 

[Bill_Bright]

according to that, you advice me to clean this and repaste,alright?

I sure do. You should NEVER reuse old TIM (thermal interface material) once it has started to cure. And note curing begins as soon as it is exposed to the air and particularly with the first heat/cool cycle (first boot) after application. This means you should NEVER simply add new TIM over old.

There are many reasons for this. Unless the old TIM and new TIM came out of the exact same tube of TIM, odds are the TIMs are made up of different materials, chemicals, and formulas. Who knows how those chemicals and materials will react with each other - especially when heated.

Also, we must remember the most efficient transfer of heat occurs with direct metal-to-metal contact. The purpose of TIM is to fill the microscopic pits and valleys in the mating surfaces to prevent any insulating air from getting trapped inside. This means a proper application of TIM is as thin a layer as possible, while still providing complete coverage. Any excess TIM is in the way and counterproductive to the efficient transfer of heat.

So yeah, you need to power down, unplug from the wall, touch bare metal of the case interior to discharge any static in your body, then carefully remove the cooler, thoroughly clean the mating surfaces, and re-apply a proper new layer of TIM.

Note I use 91-93% Isopropyl alcohol and a clean cotton pad to clean the mating surfaces.

 

[GladiatoR]

I sure do. You should NEVER reuse old TIM (thermal interface material) once it has started to cure. And note curing begins as soon as it is exposed to the air and particularly with the first heat/cool cycle (first boot) after application. This means you should NEVER simply add new TIM over old.

There are many reasons for this. Unless the old TIM and new TIM came out of the exact same tube of TIM, odds are the TIMs are made up of different materials, chemicals, and formulas. Who knows how those chemicals and materials will react with each other - especially when heated.

Also, we must remember the most efficient transfer of heat occurs with direct metal-to-metal contact. The purpose of TIM is to fill the microscopic pits and valleys in the mating surfaces to prevent any insulating air from getting trapped inside. This means a proper application of TIM is as thin a layer as possible, while still providing complete coverage. Any excess TIM is in the way and counterproductive to the efficient transfer of heat.

So yeah, you need to power down, unplug from the wall, touch bare metal of the case interior to discharge any static in your body, then carefully remove the cooler, thoroughly clean the mating surfaces, and re-apply a proper new layer of TIM.

Note I use 91-93% Isopropyl alcohol and a clean cotton pad to clean the mating surfaces.

thank you so much..i made what you told me and put anew thermal paste but it took me half an hour to install the cpu fan,so did the thermal paste affected by Air ?
is there will be any problems?
for some clearance the preinstaled thermal paste of cpu stock fan wasn't meant that it was used before...
it was the first time i use it but i didn't notice that the fan come with preinstaled thermal paste and i put another thermal paste on my cpu inaddition to the fan thermal paste...
do you understand me?
but i cleaned all that and put a new thermal paste only on my cpu then instaled the fan after cleaning it well.
thanks

 

[Solaris17]

thank you so much..i made what you told me and put anew thermal paste but it took me half an hour to install the cpu fan,so did the thermal paste affected by Air ?
is there will be any problems?

No, your fine.

 

[GladiatoR]

No, your fine.

thank you bro

 

[Lei]

for some clearance the preinstaled thermal paste of cpu stock fan wasn't meant that it was used before...
it was the first time i use it but i didn't notice that the fan come with preinstaled thermal paste and i put another thermal paste on my cpu inaddition to the fan thermal paste...
do you understand me?

yes, we understand. you should not put thermal paste on top of thermal paste.
the layer of thermal paste you make must be as thin as possible. and you should not mix two types of thermal pastes together (hence your preinstalled paste is not same as the one you added)

 

[Bill_Bright]

so did the thermal paste affected by Air ?

I agree with Solaris17. 30 minutes of exposure to air would not be a problem. The greater risk would be foreign objects like dust bunnies or cookie crumbs falling on the exposed TIM.

 

[GladiatoR]

yes, we understand. you should not put thermal paste on top of thermal paste.
the layer of thermal paste you make must be as thin as possible. and you should not mix two types of thermal pastes together (hence your preinstalled paste is not same as the one you added)

ok i got it, but when i put the thermal paste, i couldn't make it in the middle acurately so while i was trying to install the fan, the fan was sticking to the processor and during adjustment to fit in the correct holes of motherboard i noticed that the paste spreaded on most of the cpu surface with slight more towards one side than another of cpu..
as i don't have a spatula to spread the paste so the paste isn't with equal spread layer along the whole cpu surface..
will this affect anything specially the cpu temp?
thanks

 

[Lei]

ok i got it, but when i put the thermal paste, i couldn't make it in the middle accurately so while i was trying to install the fan, the fan was sticking to the processor and during adjustment to fit in the correct holes of motherboard i noticed that the paste spread on most of the cpu surface with slight more towards one side than another of cpu..
as i don't have a spatula to spread the paste so the paste isn't with equal spread layer along the whole cpu surface..
will this affect anything specially the cpu temp?
thanks

your thermal paste tube, how many grams is it? how much did you use?

not having spatula is ok, you can wiggle the heatsink on the cpu to spread the paste. in simple words: you put the fan, don't screw yet, turn the fan clockwise and counterclockwise and little up and down, down and up, left and right.... basically your fan (heatsink) is your spatula. and to be honest it's better than spatula.

imagine your fan is your brush, just draw a happy little tree on the cpu with the fanbrush.

i noticed that the paste spreaded on most of the cpu surface with slight more towards one side than another of cpu..

how did you notice at this moment. is the thermal paste oozing out from under the heatsink like this:

did you notice by thinking about the past, or by seeing the thermal paste acting like the cheese in this burger?
it's important, answer carefully.

 

[Bill_Bright]

This is how I do it.

After a thorough cleaning, I apply a very small amount of TIM - the size of a small grain of rice is often suggested. It is always easier to add more than to take excess off. I snip off the end of a plastic shaft Q-Tip (cotton swap), then bend 1/2 inch of the cut end over to make a little hockey stick applicator. Then I spread the TIM across the die with the applicator, like spreading icing on a cake - as thin as possible, but complete coverage. Then I remount the heatsink, then leave it alone.

 

[GladiatoR]

your thermal paste tube, how many grams is it? how much did you use?

not having spatula is ok, you can wiggle the heatsink on the cpu to spread the paste. in simple words: you put the fan, don't screw yet, turn the fan clockwise and counterclockwise and little up and down, down and up, left and right.... basically your fan (heatsink) is your spatula. and to be honest it's better than spatula.

imagine your fan is your brush, just draw a happy little tree on the cpu with the fanbrush.

how did you notice at this moment. is the thermal paste oozing out from under the heatsink like this:

did you notice by thinking about the past, or by seeing the thermal paste acting like the cheese in this burger?
it's important, answer carefully.

no, when i lifted the fan during adjustment on the screw holes, i saw that...

noctua NT-H1 3.5g

This is how I do it.

After a thorough cleaning, I apply a very small amount of TIM - the size of a small grain of rice is often suggested. It is always easier to add more than to take excess off. I snip off the end of a plastic shaft Q-Tip (cotton swap), then bend 1/2 inch of the cut end over to make a little hockey stick applicator. Then I spread the TIM across the die with the applicator, like spreading icing on a cake - as thin as possible, but complete coverage. Then I remount the heatsink, then leave it alone.

but i already installed the heatsink and it was difficilt for me to adjust the screws...
will be all ok as i described about not equal spread along the cpu serface?
i apologize about annoying you...
i appretiate your help....thanks

 

[Lei]

@GladiatoR
that's ok, just the turn the system on and see the temps.
we will help you if anything goes wrong.

while screwing the fan/heatsink, you should fasten one screw, skip the neighboring one, and fasten the next one. This helps the pressure being equally distributed.
so when you fasten one screw, the next one should not be the nearest screw.
and each time you're fastening, just do a little bit, don't fasten as much as you can. you'll return to the same screw later and fasten more. so each time you're screwing, just turn ~3 times.

like this, first fasten number 1, then 2 ,3 , 4 and then get back to 1 (which is 5 now) ....

 

[GladiatoR]

@GladiatoR
that's ok, just the turn the system on and see the temps.
we will help you if anything goes wrong.

while screwing the fan/heatsink, you should fasten one screw, skip the neighboring one, and fasten the next one. This helps the pressure being equally distributed.
so when you fasten one screw, the next one should not be the nearest screw.
and each time you're fastening, just do a little bit, don't fasten as much as you can. you'll return to the same screw later and fasten more. so each time you're screwing, just turn ~3 times.

View attachment 268781

like this, first fasten number 1, then 2 ,3 , 4 and then get back to 1 (which is 5 now) ....

ok..i understood you...thanks very much
one more thing, my processor is Ryzen 5 5600G ..what is the recomended temp during playing games?

 

[Bill_Bright]

Not

it was difficilt for me to adjust the screws...

I don't know what you mean by "adjust". You tighten them until they stop turning, and no more. They are designed to apply equal pressure at this point. There is no "adjustment" needed.

will be all ok as i described about not equal spread along the cpu serface?

If all the mounting screws are applying even pressure (as designed), the TIM should spread out evenly due to that pressure - especially after being warmed up. The issue is really about the quantity of TIM applied. As I noted before, too much TIM is in the way and counterproductive to the efficient transfer of heat. But if there is WAY too much, there is another hazard, and that is that some of the excess TIM may be squeezed out, run over the edge and onto the socket and motherboard. That would not be good.

 

[Lei]

ok..i understood you...thanks very much
one more thing, my processor is Ryzen 5 5600G ..what is the recomended temp during playing games?

Try to stay under 90. It must be less during winter though.

 

[GladiatoR]

Not

I don't know what you mean by "adjust". You tighten them until they stop turning, and no more. They are designed to apply equal pressure at this point. There is no "adjustment" needed.


If all the mounting screws are applying even pressure (as designed), the TIM should spread out evenly due to that pressure - especially after being warmed up. The issue is really about the quantity of TIM applied. As I noted before, too much TIM is in the way and counterproductive to the efficient transfer of heat. But if there is WAY too much, there is another hazard, and that is that some of the excess TIM may be squeezed out, run over the edge and onto the socket and motherboard. That would not be good.

i mean by adjustement, fitting the screws in their positions..it was difficult for me to fit the 4 screws although of being using x method to fit them..
you reach my point?
by the way i tighten them until they stoped turning as you say...
thanks alot

Try to stay under 90. It must be less during winter though.

so if it was between 70-80°c, iam safe...alright?