When pulling, you're getting even air flow over all of the fins. PC Cooling: How to Set up Computer Case... Four Apps that Make Your Tablet a Second... 2019 Solid State Drive (SSD) Buying Guide. Different flow affects dust build up just as much as the case and house itself. The case I have is the NZXT Lexa Blackline. 4 years ago. Of course there’s the CPU and GPU coolers as well as the PSU playing into it. When looking at the fan so that the circular sticker with the Noctua logo is facing you, the direction of airflow is towards you and the sense of rotation is clockwise: Do you have a question concerning one of our products? Static pressure fans are great for radiators and case meshes, and use resistance to push heat through your PC build. When looking at our fans, the Front or Intake side of the fan will always be the side that has the Cooler Master Logo in the center of the blades. To avoid making your computer too loud, use fewer or quieter fans. https://www.maketecheasier.com/intake-exhaust-fans-airflow-desktop-pc Negative pressure – More air is being pulled out of the case than being pushed in, creating a vacuum. I have one in the back of the case, two at the very bottom, one in the front. (I know homie answered already above, but this sitting here unanswered still bugged me.) Thanks for the feedback. So the open side of the fan should face outside the case for intake fans on the front or the bottom, and it should face inside the case for fans on the rear or top. Just be sure to actually clean the filters once in a blue moon. But once you have your optimal cooling path planned out, it’s all about […], […] PC Cooling: How to Set up Computer Case Fans […]. So I've purchased a H115iv2 cooler, and will be placing this at the very front of my case, but I'm confused about fan direction and air direction. Simplest way to check fan direction is to just plug it in and see which way the air flow is. If a blade is angled down and the fan turns in the same direction as the blade angle, it will blow forward. You really could have spent a little more time on this to make it easier to comprehend for the beginners. 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. Neutral would be when intake and exhaust CFM are equal. By changing the direction a fan is mounted, it can act as either an intake or exhaust. Airflow Direction of CPU Fan This is all about my old Dell Dimension 4400's design. 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. In simple terms, a computer case can either have: To determine pressure, total the CFM of all the intake fans and CFM of all the exhaust fans. Aim for slightly positive pressure, with slightly higher intake CFM than exhaust CFM. One of the best spots on a machine is the top of the case. Pure Wings 2 PWM. How can I change a fan from suck to blow? Alternatively, you can plug the fan in and place a tissue on a side of the fan to determine the direction of air flow. Also, flashing multi-color lights shouldn’t be the main feature of your case fans. Looking straight down the airflow path. If you could explain the proper direction for each fan flow. Likewise, if the blade is angled down and the fan turns the opposite direction, the reverse is true. Air travels one way through a fan, in one side and out the other. To figure out whether your PSU fan needs to point up or down, start by looking over your PC case. You want as close to a laminar flow as you can get, which just means as smooth and unobstructed as possible. EXPERIMENT #2: A FAN AIRFLOW BOX Just be mindful of the noise levels as fans can generate quite a buzz. Also, flashing multi-color lights shouldn’t be the main feature of your case fans. Don’t say you’re doing it to make it quieter. your first picture is wrong, fan intake is the open side on 99% of fans. the direction the fan spins. I'm building a smaller computer for a family member and its an Antec P50 case. Speaking of dust, you want to make sure that your computer remains as dust free as possible. Thank you. Please use this form to pose a question! Please use our contact form for any further queries. If your case has vents at the top, they should be placed as exhaust fans because hot air will rise. There needs to be rhyme or reason to the setup or else it becomes something wholly inefficient. You will also be able to identify the Exhaust side as you will see power wires entering the fan motor. Do: Mount the radiator so its airflow is not impeded by other devices in the machine. In hindsight, using another method to represent air pressure would’ve been better. You should also heed the placement of the fans. So my question is, should i flip the top fan to be an intake and leave the one on the back as an exhaust? Detach and remove them if … The direction a fan blows air is always determined by (A) the shape of the blades (sometimes called propellers) and (B) the direction they turn. Optimal air pressure with a computer case is one of the most discussed and debated topics in computer cooling. As for the pressure graphics, the arrows are supposed to represent pressure rather than airflow. If you are searching for a new chassis for all that futuristic tech you’ve just bought, there are a few things to consider when it comes to airflow optimising. To check the airflow direction of the fan, simply put a piece of tissue in front of it. By leaving filters dirty or covered in dust, you reduce airflow and cooling power. Does this configuration compromise the intake cfm’s? The Rear or Exhaust side (the side that the air comes out of) of our fans will always be the side that houses the fan motor. Should I add additional fans at the top of my case to help with proper air flow? Lastly, the fan airflow can be identified by the arrow markings on the fan housing. (the side with the guard/motor support) Lastly, the fan airflow can be identified by the arrow markings on the fan housing. Determining Which Way Your PSU Fan Should Point. Photo by Jeff Kubina, taken from Flickr Creative Commons, PC Cooling: How to Set up Computer Case Fans - HardBoiled. Computer fans are typically 12V or 5V. I have a NZXT H500 case, it has 1exhaust on the back and 1 on the top aswell and i have a NZXT kraken x62 for cpu liquid cooling and the radiator is mounted at the front with 2 intake fans. To avoid making your computer too loud, use fewer or quieter fans. When building your computer, be sure to configure your cooling system with the principles outlined above in mind. I was wondering if having too many fans is a bit redundant considering the person using the computer will just be browsing the web and storing pictures. Unique, airflow-optimized fan blade design; Up to nine silence-optimized fan blades; High-quality rifle-bearing (up to 80.000 operating hours) Pure Wings 2. To change the direction of the air moving through a fan you can take out the screws, and then flip the fan over. Neutral pressure – Air pressure in the case is equal to air pressure outside of the case. Side-mounted fans should be used for intake, though they often don’t have air filters. There are several options for how a CPU cooler can exhaust heat from the CPU. I have 4 fans for my case, what direction should I have the airflow on each fan point to get maximum usage? The Rear or Exhaust side (the side that the air comes out of) of our fans will always be the side that houses the fan motor. The only problem is i cant remember which way the rear case fan was facing. Or just make them both exhaust? High airflow and static pressure fans blow air through your PC, but they do it in different ways. Use proper fan positioning. Question here, how can you find out the cfm rating of the stock fans that come with a computer case? Large internal fan ducts, while a good idea on paper, are more likely to decrease overall thermal performance by obstructing primary air flow through the case. You can’t really control airflow at these points unless you want to put caulking or sealant in your case. 140mm 120mm 92mm 80mm 140mm high-speed 120mm high-speed. Just be sure to avoid those tacky LED-equipped case fans in the office. Determine where the PSU is intended to fit; this is typically at the bottom of the case in most modern chassis designs. For details on achieving optimal computer case air flow, see our case fan setup guide for more information. Most cases are designed with a certain directional airflow in mind–usually front to back, and bottom to top. 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