I normally clean my GPU and motherboard with 91 percent isopropyl alcohol but it leaves an oily looking film even though the bottle says the inactive ingredient is water. I found some MG Chemicals 99 percent anhydrous isopropyl alcohol on amazon but I’m wondering if its safe to use and if it will leave the same film.
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3I think you are sweating the irrelevant. I have even cleaned parts of my pc with gin in a pinch.– Señor CMasMasMar 15, 2019 at 15:39
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199% will behave pretty much like 91%. If it's leaving a film, the film is the material you're trying to remove, not the alcohol. 99% might even leave more of a film because it will dissolve more and evaporate faster.– fixer1234Mar 15, 2019 at 15:47
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I should add that I can get the film off if I clean the same spot with qtip and alcohol over and over again. I believe it has something to do with the way the alcohol dries. Sometimes when I clean it, it leaves a film, sometimes it doesn't. I read somewhere that perhaps anhydrous doesn't leave the film. Anyway I guess the 99 percent still has 1 percent distilled water the same as 91 percent. I always thought water caused rust and was conductive.– SpaceCowboyMar 15, 2019 at 17:57
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1 Answer
In my personal experience, I've found 99% more effective for cleaning CPU thermal paste, especially when complemented with a surface purifier. Arguably if I'd used 91% i'd have experienced the same CPU performance without any additional heat but I'm not going to shell out on some 91% when I have some 99%. Also, make sure you use a lint-free cloth when removing thermal paste.
answered Mar 15, 2019 at 16:10
