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Heat-Spreaders? - Page 3

post #21 of 28
But surely the fact that the heat will be trapped in the RAM until it can be passed into the heatspreaders, and the fact that heat will be trapped in the heatspreaders until it can be passed into the air, will slow down heat transfer and cause the modules to be hotter?

Whatever it is, I like the look of heat spreaders
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post #22 of 28
Trapped heat... the purpose of a heat spreader, or heat sink is to transfer the heat faster and aluminum heat spreaders will do just. They may not offer a great amount of improvment on thermal dispersion, but they do improve it over having none.
    
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post #23 of 28
Although some heatspreaders kits can slow down heat transfer due to the TIM tape used acting more as an insulator due to its cheapness.

Right?
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post #24 of 28
Tape that acts as insulation... now that is a great idea! Who would insulate something that should be giving its energy away?

Also, heated bodies are continuosly giving their energy away. There is no waiting (the wait is measured in picoseconds or 10^-12) to give out the heat. There is no trapped heat. There are heated surfaces, but no trapped heat.
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post #25 of 28
I've just read in places that the tape can actually act as an insulator, as in it would be better to transfer directly to air than to heatspreaders with tape

I give up Please don't punish me
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post #26 of 28
No punishment... just setting the record straight. I do agree that TIM tape might act as an insulator. That is a bad, bad thing to do to memory. Indeed direct transfer to air is the most desireable thing. Active cooling is also, but good case airflow should be enough to keep the memory cooler than without any other means.
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post #27 of 28
Yep - I'm getting some new stuff (see text in sig) and am planning on modding a fan for my side panel
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post #28 of 28
Heat transfer is purely effected by the surface area and the ability of the heat to be transfered to the air. The air surrounding the modules then absorbs the heat by a process of convection.

Therefore the larger the surface area of the heatspreader the greater contact with the ambient air. This air then needs to be replaced by fresh cooler air (a fan or such)

The ability for any metal to conduct and therfore covect the heat into the atmosphere is affected by the temperature gradient betwwen the heatspreader and the air in close proximity.

Therefore if the air is stagnant this temperature will keep rising until it is replaced. this is why the internal case temp it critical to the effectiveness or air coolers
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