How are processors heated

Improve PC cooling: This is how your computer stays totally cool!

Lots of sun, blue skies, extremely high temperatures - summer is currently living up to its name. And the current "Sahara heat" is preparing to break records: In some places temperatures close to 40 degrees are expected these days! For humans and animals, this means: use your energy sparingly, look for shade, drink plenty of water. But technology now also urgently needs help: computers find it difficult to cope with the heat. Many a badly cooled PC even blesses the temporal in summer. You will find the best tips here to ensure that your system continues to work easily.

Why do components in the computer heat up?


The processor and graphics card have the largest share of the heat development in PCs. Powerful high-end hardware in particular pulls the power supply properly and causes so much waste heat that it needs active cooling. In order to increase the speed of processors and graphics cards, manufacturers are packing more and more transistors - that is, components for controlling electrical voltage - into the small chips. Each transistor generates some heat when it is working: The current flows through the copper cables of the computing units at almost the speed of light, while the low resistance in the cables causes heat. This is how the chip surface finally heats up. The fact that millions of cables lie close together on a small area further intensifies this effect.

Which components in the PC need cooling?

What temperatures are normal in a PC?


It depends on the component: some components can withstand more heat, some less. The processor should not exceed 50 degrees Celsius if possible, because higher temperatures have a negative effect on the service life of the chip. Before it is damaged by overheating, however, it protects itself: it reduces the clock frequency and operating voltage ("thermal throttling"). The chips on graphics cards can withstand a little more heat than processors, but should not exceed 50 degrees Celsius during normal operation. In the case of games, the overheating limit is around 80 degrees Celsius. The temperature of the motherboard is normally well below 40 degrees Celsius; higher values ​​reduce the service life of the voltage transformers, for example. If the temperature of a hard disk rises above 50 degrees Celsius, there is a risk of data loss because the magnetization of the hard disk drives then begins to suffer.

How to determine the temperatures in the PC

How do I optimize the cooling in the PC?


Most computers have fans for cooling. These generate a stream of air that flows over all components in the computer and transports the heat from the processor, graphics card and motherboard out of the housing. Fans are available in different sizes; Models with a diameter of 80, 120 and 140 millimeters are common. The larger the fan, the more air it moves at the same speed. By the way: The first signs that components are overheating are loud fan noises - because if individual parts heat up too much, the fan spins up. If there are also crashes and dropouts, there is an urgent need for action! COMPUTER BILD has compiled tips and tricks with which you can significantly improve the cooling of your PC.

Improve the cooling in the PC case!

Improve the cooling of the hardware components


As the performance of modern PC components increases, so do the demands on cooling performance. Many standard coolers do not lower the temperatures of components such as the graphics card and processor enough to get the most out of their performance. The range of fans from third-party suppliers is large and varied, so that it is easy to lose track of things. You can find recommended models at the following link.

»Comparison: The best case fans at a glance!