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The CPU & Heatsink Lapping Guide
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There you have it - a guide to lapping the heatsink base and CPU heatspreader. As you can see, it really is not that difficult, and it's cheap. All you need is some sandpaper, a piece of glass, some tape and a little water. For only $20 and a little sweat, I've managed to reduce the CPU core temperatures by 6.9-10.3 °C. That is a drop of 11-15 % below the baseline.

So, if you are looking for the best reduction in temperature for just $20, lapping both the heatsink base and the CPU heatspreader is the way to go. Lapping just one of them will give you a small but significant reduction in temperature, but lapping both gives you a synergistic effect with a much bigger reduction in core temperatures.

Just remember that the key is to get a flat and smooth finish. A flat surface is more important, although a smooth finish is also good. However, never fall for the trap of using a polishing agent for a mirror finish. The polishing agent will leave a residue that interferes with the thermal transfer from the CPU to the heatsink.






Lapping The Heatsink Base
After Lapping The Heatsink Base


Lapping The CPU Heatspreader
After Lapping The CPU Heatspreader


Overall Results
Temperature Variation Between CPU Cores


So How Do You Lap?




Questions & Comments

Please feel free to post your questions or comments here!


Date Revision Revision History
28-08-2007 1.0

Initial release.

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