说到追求真正的极客，毫无疑问是太神秘了。今天我们来看看散热片的颜色是否重要（以及性能的提升或奖金是否值得考虑）。

今天的问答环节是由SuperUser提供的，SuperUser是Stack Exchange的一个分支，是一个由社区驱动的问答网站分组。

问题

超级用户读者Bob Freaking想知道散热器的颜色是否重要：

I know that heatsinks come in different fin forms and those different fin forms affect the way how they dissipate heat. However, there’s something I could not get about them and it’s their color.

Can someone explain how does color affect a heatsink when it comes into dissipating heat? Complex explanati*** are welcome because I’m really curious about this particular matter.

鲍勃知道他想要什么，他想要的是详细的分析。

答案

超级用户贡献者Journeyman Geek深入研究了Bob的问题：

I suspect its unlikely, though it depends on what you mean by colour. There are three fundamental modes of heat transfer for any material, and only one of them is directly affected by colour.

Heat is transferred from the heat source to the heat sink, and from the heat sink to the air by conduction. Most heatsinks are made of copper (heavy, and relatively expensive) or aluminium – and copper is generally left natural, and aluminum either has a natural clear covering of AL2O3, or is anodised and coloured. For conduction material rather than colour is important.

Convection is the movement of heat through the movement of air. While passive cooling simply uses this, you can increase its efficiency by increasing surface area (which is why heatsinks are finned), or by forced convection – blowing air to carry heat away. While air is not a good conductor, convection in air is how everything from cars to heatsinks are cooled. This is very efficient, and dosen’t really rely on the material properties of the heatsink, or on the colour.

Radiation is.. frankly awful at transferring heat unless you’re in a vacuum(It also sucks in a vacuum, but conduction and convection cannot happen). It is affected by surface colour.

Practically speaking, a heatsink being coloured is entirely for looks, and will affect cooling less than surface area, airflow, material and the contact between the heat source and heat sink.

任何地方的Case modders和PC建筑爱好者都可以放心地知道，他们定制的彩色散热器不会损害热传递。

有什么要补充的解释吗？在评论中发出声音。想从其他精通技术的Stack Exchange用户那里了解更多答案吗？在这里查看完整的讨论主题。