![]() ![]() ![]() Reversing would be bad as the 2 are so close together they would cancel each other out in a small area and give most of the case NO airflow. That is why all the perforated side plates and back plates are that way and the fans are mounted to be exhaust only. The NZXT H500 and 510 series cases are specifically designed to be negative pressure. Just be sure to avoid those tacky LED-equipped case fans in the office. Otherwise, you may end up with a toaster oven of a computer. When building your computer, be sure to configure your cooling system with the principles outlined above in mind. This way, the air that enters your case goes through a filter first. Aim for slightly positive pressure, with slightly higher intake CFM than exhaust CFM. Negative pressure would mean that air is being sucked into your case from all the tiny gaps you can’t control and don’t have filters on, which means less efficient cooling over time. In a perfect scenario, you’d have neutral pressure with an enclosed case because no dust would be sucked in. Neutral would be when intake and exhaust CFM are equal. If exhaust CFM is greater, then you have negative pressure. If the intake CFM is greater, then you have positive pressure. To determine pressure, total the CFM of all the intake fans and CFM of all the exhaust fans. Negative pressure – More air is being pulled out of the case than being pushed in, creating a vacuum.Difficult to attain unless you leave the case open. Neutral pressure – Air pressure in the case is equal to air pressure outside of the case.Positive pressure – The case fans push more air into the case than then pull out, so there is more air pressure inside of the case.In simple terms, a computer case can either have: Optimal air pressure with a computer case is one of the most discussed and debated topics in computer cooling. You can’t really control airflow at these points unless you want to put caulking or sealant in your case. By leaving filters dirty or covered in dust, you reduce airflow and cooling power.Īside from fans and vents the other major points of ingress include the many small gaps in the chassis and adjoining pieces. Just be sure to actually clean the filters once in a blue moon. Many cases have removable filters that can be cleaned by a quick rinse. To reduce dust in the case, ensure that the air going into the case first passes through a filter. ![]() Otherwise, all the airflow in the world won’t help much to cool down your components. Speaking of dust, you want to make sure that your computer remains as dust free as possible. To prevent dust issues, you can custom fabricate your own filters. Side-mounted fans should be used for intake, though they often don’t have air filters. If your case has vents at the top, they should be placed as exhaust fans because hot air will rise. Generally, you want the case fans in front of the case drawing in air while the fans at the rear blow air out. Air should travel in clear path through the case. You should also heed the placement of the fans. By changing the direction a fan is mounted, it can act as either an intake or exhaust. ![]() Also, flashing multi-color lights shouldn’t be the main feature of your case fans.Īir travels one way through a fan, in one side and out the other. To avoid making your computer too loud, use fewer or quieter fans. Just be mindful of the noise levels as fans can generate quite a buzz. More case fans means higher total CFM and more air being moved through your computer. To properly air cool your computer, you need have enough case fans to push or pull air into and out of the case. The greater the CFM, the more air a fan moves. Case fans and ventilationĮvery fan features a cubic feet per minute (CFM) rating, which measures of the volume of air it moves in a minute. We break down the fundamentals of air cooling your computer so you can avoid a Chernobyl-like meltdown. There needs to be rhyme or reason to the setup or else it becomes something wholly inefficient. Sure, you could take the “maximum power” approach of shoving as many fans as possible into and onto the case, but that’s far from ideal. Ensuring your computer receives sufficient cooling with PC case fans isn’t rocket science but it can be tricky. ![]()
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