Help: Corrosion on GPU die

[Aelred89]

Hi all,

I recently purchased a GPU in the members market and I removed the heat sink to reapply thermal paste as normally do and as I was cleaning the old stuff off I noticed this corrosion on the GPU die.



There was also a black mark on the heat sink that lined up with the corrosion (which I have since removed with some very fine sand paper).

Any ideas what this might be and whether I should be worried?
(The previous owner stated it has been used for mining in the past but has been used as a gaming GPU since with no issues)

Thanks in advance

-Aelred89

 

[LeMson]

if it was working fine before just slap a dollop of thermal paste on it and carry on

 

[Jokester]

Might be dried out liquid metal.

 

[bigmike20vt]

If it works it works. I would say no point worrying about it, highly unlikely seller would refund over it anyway so no point unduly stressing over it

That said it does look strange

 

[Aelred89]

Thanks for all the input so far. The seller has been really good and has offered to take it back if I'm not happy.
That said, I ran MSI Kombustor overnight so it survived 8.5 hours at ~75 degrees.
I think our best guess is the stock thermal paste dried out and cracked and must have burned the die whilst mining, probably not helped by the fact one of the stock fans stopped working at some point.
I'll keep it as it was a good price (£130 delivered) but I think I'll always have it in the back of my mind.

 

[bigmike20vt]

For a gtx 1070? (Assuming I got model number correct). That is a bargain!

 

[azazl187]

Running it for 8.5 hours at 100% load can't have done it much good ether.

I expect it is much like you said, it's dried paste that has been cooking away while mining.

 

[Aelred89]

Running it for 8.5 hours at 100% load can't have done it much good ether.

I expect it is much like you said, it's dried paste that has been cooking away while mining.

It's not overclocked so surely as long as it's not overheating it should run at 100% indefinitely, right? (imagine that's what it did in it's life as a miner)

 

[Zeed]

I'd ignore and put tim on and just use it. Assume You know this is like no damage at all. PEople do DIE LAPPING takes loads to get over top layer !!!

 

[labcoattech]

If it's survived 8.5 hours of being stress tested then it should be fine.

 

[azazl187]

It's not overclocked so surely as long as it's not overheating it should run at 100% indefinitely, right? (imagine that's what it did in it's life as a miner)

True but I wouldn't like to do it myself. Pinning a gpu to 100% for prolonged amounts if time is just asking for trouble

 

[Aelred89]

True but I wouldn't like to do it myself. Pinning a gpu to 100% for prolonged amounts if time is just asking for trouble

I’ll avoid it in the future