Sanding down the base of a heatsink to make it as close to perfectly smooth as possible is for those who are truly fanatical about trying to lower the temperatures of their systems. Nevertheless, Easy PC Kits offers a kit for doing just that. Mike Mackenzie checks it out to see whether the improvement obtained in system performance justifies the cost in time and money.
In the search for the lowest possible temperatures, users will go to what most would consider extreme measures: taking the heatsink to the sanding block and removing the slightest imperfections from the base. Lapping a heatsink is normally left to the bravest of the brave, users who are trying to get every last MHz they can out of their high end systems.
Heatsink manufacturers machine the bases of their heatsinks to about 1200 grit. This is a very smooth flat surface, but the machining process can leave imperfections in the base that can prevent a heatsink from maintaining optimal contact with the processor. Manually sanding down the heatsink will remove these imperfections and ensure that your processor makes maximum contact with your heatsink, which can lead to lower temperatures and higher overclocking results.
I recently purchased a very promising heatsink lapping kit from Easy PC Kits, with the intention of improving the base of my Arctic Cooling Freezer 7. Could it yield higher MHz, or a reduction in temperature? We will see shortly.
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