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What percent rubbing alcohol to clean CPU's thermal paste?


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#1 CalusBlade

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Posted 08 September 2015 - 07:42 PM

I have a 70% bottle but some people say 90% or higher.



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#2 Animal

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Posted 08 September 2015 - 07:59 PM

Yes the highest % isopropyl alcohol you can get is best. Otherwise you're going to leave a residue to some degree. I have 99% but had to buy online. Could only find 91% via retail outlets.

Here is what I got on amazon: http://www.amazon.com/Swan-Isopropyl-Alcohol-99-Pint/dp/B001B5JT8C

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#3 Platypus

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Posted 08 September 2015 - 08:07 PM

As Animal commented while I was typing, the higher the alcohol percentage the less water content, so less chance of a water residue getting somewhere. I use high purity IPA (Isopropyl) sourced from an electronics wholesaler, so any residue evaporates cleanly away. If you just use the alcohol to damp whatever material you're using for cleaning, and don't have liquid escaping onto the chip or board, there is probably little risk, dry it well before using. But yes, the higher the alcohol concentration the better.


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