5/20/2023 0 Comments Pc airflow diagramThe greater depth not only increases the surface area of the blade, but the thickened frame also improves the fan's inherent suction effect, which manifests as higher static pressure. Thicker fans make it possible to design blades with a steeper angle of attack, which allows them to scoop up a larger amount of air per rotation. A thicker fan will deliver increased airflow compared to its thinner counterpart of the same size for several reasons. In the desktop PC space, fan thickness typically ranges from 10mm to 40mm. I drew out a positive pressure flow diagram to further demonstrate what is going on. Look at the fan blades Not all fans have an arrowor perhaps you’re trying to evaluate a fan that’s installed in a case or on a CPU cooler and you don’t want to unmount it to look for an arrow. Fan ThicknessĪlso expressed in millimeters, fan thickness is the second set of numbers expressed alongside the fan size. You can find specialty fans operating at higher speeds, but these draw more power and require dedicated fan controllers with beefier power delivery. Not surprisingly, a typical 200mm fan spins at a maximum of 800 RPM to deliver nearly the same amount of airflow as a 120mm fan operating at its 2000 RPM limit.Īs a rule of thumb, larger fans tend to be quieter than their smaller cousins, thanks to lower rotational speeds. Related: How to Prevent Computer Overheating and Keep Your PC Coolīecause most PC case fans are designed to maximize the power draw from a standard motherboard fan header, irrespective of their physical size, the total wattage remains more or less constant across the fan size spectrum. That's a problem because a PC with a single case fan is functionally indistinguishable from an oven. Overall PC performance is severely limited if you can't take this heat away from the components efficiently. ![]() Beginners can draw a clear diagram of what to expect to. ![]() A vast majority of this power is dissipated as heat. The open-frame design makes it easy to remove or replace components while allowing improved airflow. The case manufacturer leaves this task to you because custom PCs not only exhibit wildly different component configurations, but the physical orientation of the cooling fans also varies from one build to another.Ĭomputing performance is directly proportional to the number of watts you can push through the CPU and GPU. This page helps you to select the model thats. PC case cooling, however, is a bit more complicated than that. Rear should be exhaust, it works like a leaf blower, the cool intake from the front cools the GPU(s) and take the hot air with it, before getting out through the rear. Some Noctua 120x25mm fan models are optimised for applications with specific pressure or airflow demands. ![]() The short answer is that a single case fan isn't nearly enough to prevent your computer from overheating. So, here's how you choose the best case fans for your PC. And getting that right is critical to ensure both optimal performance and long-term reliability of your custom PC.
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