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What in god's name happened to these thermal pads?

Joined
Jul 29, 2023
Messages
48 (0.07/day)
System Name Shirakami
Processor 7800X3D / 2000 & 2000 IF & UCLK
Motherboard Gigabyte B650i AORUS Ultra
Cooling Corsair iCUE H100i ELITE CAPELLIX w/ ultra slim 2x120mm fans
Memory 2x24GB Hynix M-Die @ 8000 - 38-48-48-40 - 40k tREFI & tuned subtimings
Video Card(s) 6900 XT Reference / -120 mV @ 2.4 GHz
Storage 1 & 2 TB NVMe - 1 TB SATA SSD
Display(s) LG 34GN850 (3440x1440) 160 Hz overclock
Case Lian Li Q58
VR HMD Reverb G2 V2
Software Fedora Linux 41 operating system (daily)
Ordered a GTX 690 off eBay. Haven't tested it for functionality yet, was listed as working and from his personal PC (100% seller feedback).
I opened up the card and was greeted to what seems to be thermal pads that have literally turned into dust or ashes.

Has anyone ever experienced anything like this before?
 

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never seen anything like that, your best bet would be to take a clean toothbrush you don't mind throwing away, lightly damp it with 91%+ isoproyl alcohol, brush it all away - repaste with fresh paste, and maybe buy some cheap thermal pads to replace all the thermal pads. edit: if you don't know how to refurbish an item though, you should probably just contact the seller to mail it back for a refund.

or return it for a refund, that's all I can think of. your options are those two imo
 
never seen anything like that, your best bet would be to take a clean toothbrush you don't mind throwing away, lightly damp it with 91%+ isoproyl alcohol, brush it all away - repaste with fresh paste, and maybe buy some cheap thermal pads to replace all the thermal pads. edit: if you don't know how to refurbish an item though, you should probably just contact the seller to mail it back for a refund.

or return it for a refund, that's all I can think of. your options are those two imo
Thanks for the toothbrush tip, I'll go ahead and do that. I've been using a papertowel until now.
These pads just vaporized or something. I'm taking the entire card apart because there's even fragments inside the heatsinks.

I have some thermal pads laying around that should do the job. Hopefully the card still functions.
 

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make sure its soft thistle toothbursh, you don't want medium or hard, just want to gently "dust" haha
 
More weirdness but the anti-vibration dampening pad seems to have met the same fate. It's shredded to dust all over the acrylic panel.
This is the weirdest GPU purchase I've ever made.

There isn't a single spec of dust on the fans or heatsinks whatsoever. It's almost as if it's brand new.
 

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This looks like a card that may have been in a partially exposed (as in to bad quality/outdoor air) mining rack, but can't be certain. It's odd for sure.
 
That old girl needs a full bath. Did some dirty dancing at its last home.
 
That old girl needs a full bath. Did some dirty dancing at its last home.
Spent the last few hours giving her a bit of love. The thermal pads I have now are a little too thick unfortunately, but I'll leave them on just to see if it's functional.

Updated / Edit: And she lives! :toast:
 

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Has anyone ever experienced anything like this before?
Yes. Had quite the similar thing on an HD 6950 (or HD 5850, don't remember) about five years ago. Almost dustless room with very low humidity + 100% load all the time = thermal pads get torn apart.

I don't understand why you bought a 690 but you do you. Congrats on having a working device in clean condition after all.
 
Reliving the e-peen of 2012....
:roll: Honest to god I always wanted a 690 when they first released, I found this one for roughly 50 USD on eBay (free shipping too).

If I had the money, I would purchase a 2080 Ti Lightning Z, but they're very rare and very expensive. They made a 10th anniversary Lightning Z which is even more rare, it comes in silver.
 

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690 runs so hot it generates its own snow to cool
 
Ordered a GTX 690 off eBay. Haven't tested it for functionality yet, was listed as working and from his personal PC (100% seller feedback).
I opened up the card and was greeted to what seems to be thermal pads that have literally turned into dust or ashes.

Has anyone ever experienced anything like this before?
Were they dry? Something like that started with my rx 5700 reference card a few months after I got it. I went to put a water block on it and the pads were dry and crumbling. Someone probably hit is with an air blaster and the pads crumbled into the card.
 
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This looks like a card that may have been in a partially exposed (as in to bad quality/outdoor air) mining rack, but can't be certain. It's odd for sure.
Nah, more likely the previous owner never opened the card, since it was working fine. Maybe occasional cleaning with compressed air was enough to keep it going, and a decade later pads dried up and crumbled.

Updated / Edit: And she lives! :toast:
Congrats on reviving the legend!
 
Same here! I've seen some strange things in my years, but never anything like that. I wonder what caused it.


Excellent! Dodged a bit of a bullet there. Does it benchmark ok?

Benchmarks! (1080p)
Card is overclocked but the voltage and power limit isn't touched.
+150 core / +400 mem - I think the memory can go a tad bit further. It's Hynix GDDR5.

Last two screenshots are FF14 using High (Desktop) @ 1440P. It has almost perfect SLI scaling. You can get a locked 60 even in heavy city areas with a ton of dynamic lighting at night. It runs the game at a higher framerate than my spare GTX 980.
 

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Ordered a GTX 690 off eBay. Haven't tested it for functionality yet, was listed as working and from his personal PC (100% seller feedback).
I opened up the card and was greeted to what seems to be thermal pads that have literally turned into dust or ashes.

Has anyone ever experienced anything like this before?
I'd say solvent (acetone, etc.) or UV-C / O3+NOX damage, but...

More weirdness but the anti-vibration dampening pad seems to have met the same fate. It's shredded to dust all over the acrylic panel.
This is the weirdest GPU purchase I've ever made.

There isn't a single spec of dust on the fans or heatsinks whatsoever. It's almost as if it's brand new.
The acrylic would be DECIMATED if it was (most) solvent-damage, or oxidative damage (the PCB would be badly discolored too)

Spent the last few hours giving her a bit of love. The thermal pads I have now are a little too thick unfortunately, but I'll leave them on just to see if it's functional.

Updated / Edit: And she lives! :toast:
AWESOME!

My 'goofy but plausible' guess, is some micro-organism really likes thermal pads. :laugh:

Aftering thinking about it, my final guess is someone dishwasher'd the card, cooler mounted.

IIRC, given enough hot water and agitation, all the silicone oil and/or plasticizer will leach out of the pads. Not impossible the oil more/less got 'replaced' with water, and the pad water-logged.
Then, when the card was actively air-dried, the pads just disintegrated.
 
Honest to god I always wanted a 690 when they first released, I found this one for roughly 50 USD on eBay (free shipping too).
What a deal! I'm on the hunt for all manner of older GPU's but the Dual GPU cards are high on my list, so far only have the 295 and 590. A Mars card would probably make me sploosh but they'd also be very expensive.

Well done.
 
I've seen this before and it happened on the GTX 690 that I used to own myself. The pads they used back then weren't of the highest quality, over time with the thermal load the "oily" part of the compound is going to leak out and dry, leaving only the rubbery part which over time will also turn into dust.

You gotta keep in mind these graphics cards are 11 years old by now. Thermal pads aren't often replaced by people even when they actually do maintenance on their cards, if this has been thermally cycled since 2012 and never opened before, then there's your answer.

Lots of contact cleaner spray, isopropyl alcohol, new set of pads and it's mint again :toast:
 
looks like it aged and got brittle. thermal paste goes brittle too after it dries out.

i would just replace it all. I wouldnt send it back for a refund, as seems like this was never opened ever before and honestly thats a good thing.
 
Looks like I have to dismantle and check the GTX690 I bought yesterday. At least it boots and works properly without melting.
 
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