![]() ![]() Yes, a new application of TIM to replace old TIM may yield a few degrees of extra cooling. And that should never happen unless the cooler is removed, or if the computer was subjected to some very rough handling. So the only time TIM "needs" to be replaced is when the cured bond between the heatsink and device it cools is broken. ![]() But to the point, when TIM dries out, the solids left behind are still doing their jobs - they are occupying those microscopic pits and valleys, preventing insulating from getting in there. This is why any excess TIM is in the way. The purpose of TIM is simply to fill the imperfections in the flat surfaces, the microscopic pits and valleys, and push out any insulating air that may be trapped within. The most efficient transfer of heat occurs with direct metal to metal contact. It is important to remember TIM (thermal interface material) comes in a liquified form so it can be squeezed out of the tube and spread evenly across the device. For future reference, dried, crusty paste does not need to be replaced just because it is dry and crusty. ![]()
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