Can a heatsink be on to tight?

thescreensavers

Diamond Member
Aug 3, 2005
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can a heat sink put to much pressure on the CPU die for the thermal interface to be pushed off or dissaper. b/c I put on past and 2 hours later half the die does not have past.


this is a laptop heat sink with 3 screws which I screw in at an even pace. But can it be putting to much pressure and cause Articsilver 5 to go off to the sides. b/c I see there is more thermal past on the heatsink when I take it off around the die but not on the die.

Cliffs:Can a heatsink be on to tight to push off Thermal Past.
 

PurdueRy

Lifer
Nov 12, 2004
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Originally posted by: thescreensavers
can a heat sink put to much pressure on the CPU die for the thermal interface to be pushed off or dissaper. b/c I put on past and 2 hours later half the die does not have past.


this is a laptop heat sink with 3 screws which I screw in at an even pace. But can it be putting to much pressure and cause Articsilver 5 to go off to the sides. b/c I see there is more thermal past on the heatsink when I take it off around the die but not on the die.

Cliffs:Can a heatsink be on to tight to push off Thermal Past.

You are likely putting on too much if you notice it being pushed off to the side. However, no that is fine as thermal paste is not supposed to be a thick layer. It should only be there to fill in gaps and grooves in the heatsink face. As long as you aren't putting it on extremely tight on an exposed core(enough to break it) you are fine.

Cliffs: No
 

thescreensavers

Diamond Member
Aug 3, 2005
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I put a very thin layer of it on the cpu die and I check it after 2 hours and its 2/3 off the die and on the side of the dies mark on the heatsink.
 

PurdueRy

Lifer
Nov 12, 2004
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Originally posted by: thescreensavers
but I said I am putting a thin layer your answer was for a thick layer.

It is fine then.

take a picture for us before and after if you really want confirmation
 

thescreensavers

Diamond Member
Aug 3, 2005
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Originally posted by: PurdueRy
Originally posted by: thescreensavers
but I said I am putting a thin layer your answer was for a thick layer.

It is fine then.

take a picture for us before and after if you really want confirmation

umm I dont have a high enough quality camera to do this. I will try but I dont think your going to see anything good. In about 3 weeks I am getting one. or maybe I can borrow a camera. Ill see I will post with my camera phone fist but if you cant see anything then your going to need to just wait ether I will update my thread or PM you ok

Update
Pics
 

JEDIYoda

Lifer
Jul 13, 2005
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Originally posted by: thescreensavers
can a heat sink put to much pressure on the CPU die for the thermal interface to be pushed off or dissaper. b/c I put on past and 2 hours later half the die does not have past.


this is a laptop heat sink with 3 screws which I screw in at an even pace. But can it be putting to much pressure and cause Articsilver 5 to go off to the sides. b/c I see there is more thermal past on the heatsink when I take it off around the die but not on the die.

Cliffs:Can a heatsink be on to tight to push off Thermal Past.

NO!! 100 times out of 100 if that is happenning you used way too much thermal paste!!
 

JEDIYoda

Lifer
Jul 13, 2005
33,986
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Originally posted by: thescreensavers
but I said I am putting a thin layer your answer was for a thick layer.

please think a little.....
You are using too much thermal paste plain and simple!!
It does not matter if you say its a thin layer or not...ITS TOO MUCH!!!

Even if you are NOT using Arctic Silver thermal paste I have found that the small bead almost the size a little larger than a pin heat is sufficient.

:D
 

Raduque

Lifer
Aug 22, 2004
13,140
138
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Originally posted by: JEDIYoda
Originally posted by: thescreensavers
but I said I am putting a thin layer your answer was for a thick layer.

please think a little.....
You are using too much thermal paste plain and simple!!
It does not matter if you say its a thin layer or not...ITS TOO MUCH!!!

Even if you are NOT using Arctic Silver thermal paste I have found that the small bead almost the size a little larger than a pin heat is sufficient.

:D

You use too many bangs.


OP: looking at your pics, it's fine. As the other guy said, thermal paste is only supposed to fill in MICROSCOPIC grooves, pits and so on in the heatsink and CPU die surface. If it's squeezing it out, it's because you simply put too much. It's squeezing it out, because it doesn't need that much. Stop taking it off and putting it back on before you break something; put it on once and leave it. Let the temps do the talking.
 

thescreensavers

Diamond Member
Aug 3, 2005
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actually I am talking to someone he thinks that the heatsink its on but its not even so it is pushing the thermal past to the side.
 

John

Moderator Emeritus<br>Elite Member
Oct 9, 1999
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I currently see parts of the cpu core without any grease marks. When you pulled it off the first time was the entire core covered with thermal compound? It's possible that the heatsink is no longer flat and needs to be lapped. You may be better off finding a thicker thermal pad and using it. I'm referring to the pink or grey ones that come preapplied on most heatsinks. This way you will not have messy grease seeping on to the substrate. A local computer store may have them for sale.
 

thescreensavers

Diamond Member
Aug 3, 2005
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Originally posted by: John
I currently see parts of the cpu core without any grease marks. When you pulled it off the first time was the entire core covered with thermal compound? It's possible that the heatsink is no longer flat and needs to be lapped. You may be better off finding a thicker thermal pad and using it. I'm referring to the pink or grey ones that come preapplied on most heatsinks. This way you will not have messy grease seeping on to the substrate. A local computer store may have them for sale.

like 1/3 was gone this time. so... but my heatsink is flat but I can use like 800 grit to flatten it out a bit. I can just get the company to send me a new heatsink for free