Thermal Grizzly does not last?

sieze2

sieze2

sieze2

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26 Jul 2009
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So 5 months ago I changed the TIM on my PS4 pro as it was getting crazy loud. I used the blob technique and applied Thermal Grizzly TIM. The improvement was massive. It was super quiet. However, its slowly been getting louder, and louder, to the point it again sounds like a vacuum cleaner. Today I took it apart to see what happened. It looks like the TIM has slowly migrated off the APU and been squeezed out. I must admit I am super surprised it only last 5 months. Ive never had this happen in such a short time frame. I thought TG was supposed to be long lasting? Are there bad batches out there?

 
looks like uneven pressure from the mounting has forced it out. tightening the top two screws
first, instead of diagonally would contribute to this. you should always tighten a heatsink in a gradual diagonal order of the four screws i.e 1.3.2.4 (assuming clockwise)

you can clearly see that your original blob has not spread properly at the top of the die due to the clean areas in the photo

tldr: too much tim, not even pressure
 
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Interesting. Looks to me like you guessed right, the TIM migrated out .. and it shouldn't do that. Seems several users are have experienced problems with Grizzly TIM.

Image shows TIM worked it's way out all side of die, not just one, so it doesn't look like it was caused as much by uneven tightening when cooler was installed but more blob not perfectly centered. It's very hard to get the TIM blob perfectly centers so of course more will flow out one side than another.
 
Brizzles said:
looks like uneven pressure from the mounting has forced it out. tightening the top two screws
first, instead of diagonally would contribute to this. you should always tighten a heatsink in a gradual diagonal order of the four screws i.e 1.3.2.4 (assuming clockwise)

you can clearly see that your original blob has not spread properly at the top of the die due to the clean areas in the photo

tldr: too much tim, not even pressure
Click to expand...
To be honest it was tightened in order. As you can see looking at the heatsink, the TIM has come out all the sides.
 
doyll said:
Interesting. Looks to me like you guessed right, the TIM migrated out .. and it shouldn't do that. Seems several users are have experienced problems with Grizzly TIM.

Image shows TIM worked it's way out all side of die, not just one, so it doesn't look like it was caused as much by uneven tightening when cooler was installed but more blob not perfectly centered. It's very hard to get the TIM blob perfectly centers so of course more will flow out one side than another.
Click to expand...
doyll said:
Interesting. Looks to me like you guessed right, the TIM migrated out .. and it shouldn't do that. Seems several users are have experienced problems with Grizzly TIM.

Image shows TIM worked it's way out all side of die, not just one, so it doesn't look like it was caused as much by uneven tightening when cooler was installed but more blob not perfectly centered. It's very hard to get the TIM blob perfectly centers so of course more will flow out one side than another.
Click to expand...

really?

tim will be squeezed out on all sides when correct pressure is applied,which is why yiu apply a very small amount and apply an even pressure

op has clearlry put too much, which combined with uneven pressure has firced the ezcess to the bottom of the socket

if your pressure was correct and even ,and a smaller amount had been used,then that huge puddle of tim would not be on all the surrounding capacitors.
 
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Brizzles said:
really?
Click to expand...

You see the heatsink behind it !?!? And the square outline of TIM round where the APU would have been !?! You see how the TIM has migrated out of the interface between the APU and Cooler. You see how little TIM there is over the APU.....Thats not supposed to be possible in 5 months! You can't over tighten the heatsink or even attach it in a way to make it do that.
 
Brizzles said:
really?
Click to expand...
Yeah, really.
TIM is only for filling voids where there is a void between metal to metal surfaces, not metal to make a film / between surfaces. While TIM transfers heat much better than voids do, it's still isn't even close to how well the metal in IHS and cooler base transfers heat.
So unless the mount process rocks around coming loose on one side after being tight so there is no TIM but instead a void between the surfaces, it doesn't matter even a itsy bitsy bit how much oozes out one side versus the other. All that is needed is for all the voids between metal to metal surfaces over the CPU die have TIM filling them. And I mean just the area where CPU die is under IHS, not the entire IHS.

IHS are the size they are to spread the cooler load to edges of CPU PCB where it is supported on socket and not pushing the 1000+ contacts on bottom of IHS unevenly into CPU socket. A side benefit of IHS size is giving us a big enough area to stabilize cooler on .. so we don't need shims / spacers like we used in the old days to keep cooler from crushing CPU.
 
Am I the only one that gets "Third party hosting has been temporarily disabled" with that Photobucket image? Photobucket sucks these days, try imgur.com
 
Danny75 said:
Am I the only one that gets "Third party hosting has been temporarily disabled" with that Photobucket image? Photobucket sucks these days, try imgur.com
Click to expand...
Photobucket started ransom demands sometime ago without any warning. We need to find another image host, but I've been too lazy to both .
 
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