Is this rust or just normal tarnishing?

[dani.petro]

Hey all, I was in the process of cleaning the gpu after a 6 months of not dusting and a whole week of rainfall and I notice this thing on the IO plate.

Its like a hard residue that I can't remove even with hard spirit which is 92-95% IPA and 0.5% acetone.

What the spirit did was just make the surface squeaky clean and removed my finger oils that were there from cleaning.

 

So what is this thing? Doesn't look like rust or corrosion. Looks like the surface coating has developed some sort of tarnish or oxidation.

[8-Bit Ninja]

Just surface oxidation, nothing to worry about and it wont get much worse than that. 

[dani.petro]

Just now, 8-Bit Ninja said:

Just surface oxidation, nothing to worry about and it wont get much worse than that. 

So wiping it with the above said spirit won't cause any issues I guess?

Should I wipe with a very very thin film of mineral oil?

[8-Bit Ninja]

3 minutes ago, dani.petro said:

So wiping it with the above said spirit won't cause any issues I guess?

Should I wipe with a very very thin film of mineral oil?

Honestly I wouldn't clean it with anything. A blast of compress air and a hoover should be all you need on the bits you can't see and don't touch. 

[Moonzy]

i would say finger oil + heat = that

[dizmo]

I wouldn't clean it at all. Dust it, and that's it. There's no need to use any kind of agent on it.

[dani.petro]

So since I already used IPA to clean it, do I need to do anything more? Or just leave it as it is

[8-Bit Ninja]

1 minute ago, dani.petro said:

So since I already used IPA to clean it, do I need to do anything more? Or just leave it as it is

Just leave it as is, IPA is pretty unreactive

[dani.petro]

Very Well, thanks all.

Off to my man cave to grind Apex.