Thermal paste possibly scratched CPU die, now overheating

orowolf

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Apr 19, 2017
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I performed my first delid process just a few hours ago using the Feeler Gauge method. Mostly went well; only damage was very minimal scratches on the green part of the cpu (which according to my father, who specialized in computer CPUs for 15 years, said that the scratches probably only knicked the green coating and nothing important). Most importantly to the post, the CPU die was perfectly fine. Beautiful, even. Now, however, after putting everything back together, instead of the temperature decrease I was hoping for, I had gotten huge temp SPIKES, with idling getting at 55 Celsius and Stressing at stock at 92-95 Celcius. The processor I use is a i5 7600k, CPU cooler the Cooler Master Hyper 212, and thermal paste being Tunia TX-2.

After freaking out, I took everything back apart to notice, very unfortunately, that the CPU die is badly, although not deeply, scratched. Almost like someone took sandpaper and quickly rubbed across it once

Link: http://imgur.com/a/rR7Za

The little fuzzies you see on the die? Every last one of those are scratches. (The uglyness on the green part is just excess paste or glue I hadn't taken off yet)

I understand that these scratchs are not fixable, but is it possible that they are also the cause of my overheating?

EDIT: I finally balled up and put everything back together. Boy I regret doing that. Putting the IHS (or whatever the big metal part of the CPU is called) back on and putting the clamp down to hold the CPU in place... The noise coming from that process brought me sadness. Metallic crunching. Apon putting plugs back in... Blinking Motherboard of Death. First delidding process: FAILURE

Howver, my original question remains. Can a scratched die cause overheating?
But new questions also arise, such as what the hell was that metallic crunching sound, WHY the die got scratched AFTER the delidding was complete and relidded, and, the one that I unfortunately think I already know the answer too... what should I do with my $200 processor, now?
 

RobCrezz

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Scratches wont be your problem.

when you relidded, how did you reseal the silicon on the heat spreader?

Just sounds like something was wrong with your thermal paste application between the die and the heat spreader.


Edit: Why the hell would you go to the risk and effort of delidding you cpu when your only using a Hyper 212?!?!
 


Save money on cooler? If u careful enough nothing can go wrong.
 

RobCrezz

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Big risk for a couple of extra degrees on a budget cooler. Could have just spent another $30 on a better cooler.

Plenty of people have been "careful" and plenty of people have broken their CPUS.
 


Well not really, from my own experience, i could achieve 4.9GHZ under 212 evo, voltage were 1.410v max temp prime95 79C. Recently i got noctua d15 just to get this number 5...
But OP must use CLU, i personally tried 3 pastes (noctua nt h1, gelid extreeme, CM essentials) between die and IHS.. these pastes doesnt work because its important that heat transfers fast from die into IHS.
 

orowolf

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Apr 19, 2017
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The silicon was the blackish glue around the edges, right? If so, I hadn't put back on glue as per some videos said it was optional to put the glue back in

And I... I hadn't realiz d how bad my cooler was. Judging by your reaction to it, I should get a better cooler when I (begrudgingly) get another CPU, no?
 

RobCrezz

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Its not a terrible cooler, but its just a basic budget cooler. You could have lowered your temps just by getting a better cooler, wasnt really necessary to delid.

If done correctly delidding does have benefits, but IMO its fairly risky as you have found out.

 

orowolf

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Apr 19, 2017
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510
I feel that the deliddingwent fine considering the condition of the chip (the IHS was in bad shape but that's just the heat spreader so that shouldn't be a problem). So I think something during the relidding process caused this chain reaction of unfortunate event