Well, which one is better for killing heat?or at least producing the least amount of it.I will be covering the top half's of both heat sinks(cpu and gpu) with one of these and I just need something that produces less heat than the other, dissipates it more, prevents heat more, etc. I just ned to get rid of heat, ha ha. I know it sounds silly to put this on top, but I have to for better fan airflow, its for my xbox 360, but i figured overclockers would know more about this.
To keep it simple......Copper is better at removing or absorbing heat than aluminum but aluminum is better at dissipating it or getting rid of it. I guess that's why you see aluminum CPU coolers with copper cores.
Copper Vs Aluminum Heatsink
Copper has higher thermal conductivity, therefore, it's ideal for that purpose. If you want to dissipate heat, you would need high amount of surface area of copper (like lots of fins). Wiztek, that is not true. The copper absorbs heat better than aluminum but aluminum releases heat better than copper is a BIG MYTH. Thermal conductivity doesn't matter if its heat flowing in or out. THERMAL CONDUCTIVITY Copper: 380 W/(m·K) Aluminum: 200 W/(m·K) These values are always constant whether heat is flowing in or out. In other words, the ability to absorb heat and the ability to release heat are the same thing. The reason why copper based aluminum heatsinks are more popular is because its cheaper to manufacture, lighter, and the real world performance difference between copper-core Al heatsinks and 100% copper heatsink is rather small while the difference between copper-core Al vs 100% Al is larger. Copper is also very expensive, twice as heavy as aluminum, soft, and vulnerable to corrosion. Maybe that's why some copper heatsinks are nickel plated to prevent corrosion.
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