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Plastic around TIM

post #1 of 5
Thread Starter 
I was pulling apart my graphics card to reapply the TIM, and noticed that there is a plastic around where the heatsink meets the GPU. Is this normal or should I pull it off?



Looks kind of like it protects the little metal pieces around the GPU, but there was TIM all over the metal pieces so idk about that.. Also should I use AS5 or Shin etsu? ill have both in a couple days. I have AS5 now. Thanks in advance for the help.
post #2 of 5
I would use the shin etsu since the AS5 takes time to cure.

As for the plastic, this is the first time in years I've ever seen something like that. My first thought was, "Whoever touched this last on the production line forgot to remove the plastic filament before placing the heatsink on."

Though I would try and research via google and see if any review mentions this. If not then it should be safe to remove it.
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post #3 of 5
I think the plastic is there so the heatsink won't short anything out since there is nothing protecting the PCB area around the core itself.

Don't take my word for this though. Research it. Better safe than sorry.
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post #4 of 5
Thread Starter 
Anyone know for sure, Ive looked online, I can find old GPUs with this same thing, but not a 5850 or anything recent... Also, how much TIM should I use on this? just like a bb size?
post #5 of 5
Its almost surely there to protect the parts around the die. If you look at other 5850 coolers the portion that touches the core is actually taller, for example:

 
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