Keep Your PC Cool by Replacing Its Thermal Compound - Low End PC

Call me simple, but I had no idea what thermal compound was until about a year ago when I decided to upgrade the factory-installed RAM on my iMac G4. Apparently there is a two-part heatsink in the good ol' Luxo Mac that needs thermal compound at the joint to thermally bond the two parts.

What does thermal compound do, and why should you be concerned about it?

What Is Thermal Compound

Thermal compound is, to put it shortly, a paste-like fluid used to fill the surface imperfections in CPUs, GPUs, and other chips in order to more effectively transfer their heat to a heatsink. In a perfect world, it wouldn't be required, because perfect chips could have all their microscopic imperfections polished out, creating perfect contact (and thus heat transfer) to a heatsink.

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