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Originally Posted by \\«WÎÑG»//
why did it happen?.
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You mounted it incorrectly? Did you use thermal compound? Did you try several mounts? Maybe it's a crap heatsink despite it being made of copper. But the temperature comparison you gave suggests that you fûcked it up.
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Originally Posted by \\«WÎÑG»//
You are not just trying to get rid of heat, your trying to stop it at the source.
...Even if copper will conduct heat away, you cannot cool it fast enough from stopping heat from building within the copper. ...
...in other words, you cant lose heat fast enough to still stay cool and not gaining temp.
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WING, I think you are misunderstanding the problem. We ARE only trying to get rid of heat. We are NOT trying to stop it at it's source, the only way to do that would be to switch off the computer.
If heat is added to a system the temperature will rise. That is fundamental. It will rise linearly if there is no mechanism for transporting the heat away. If there
is a means to move the heat away the temperature will still rise, but it will do so ever more slowly the hotter the system gets until the system reaches a steady state temperature. This steady state temperature is determined by the effectiveness off the transport mechanism, your heatsink.
The heatsink effectiveness is determined by the conductivity of its material, it's dimensions and its convective ability to transport the heat from the heatsink into the surrounding air. It's heat capacity affects the rate of temperature rise, not the final SS temperature.
It is possible to make a heatsink from aluminium that outperforms a copper one, but the "best possible" copper heatsink will always outperform the "best possible" aluminium one...
...I tried.