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Also, flashing multi-color lights shouldn’t be the main feature of your case fans. (the side with the guard/motor support) Lastly, the fan airflow can be identified by the arrow markings on the fan housing. How to determine the airflow direction of your case fans. If exhaust CFM is greater, then you have negative pressure. When pulling, you're getting even air flow over all of the fins. It is an Akasa fan. To check the airflow direction of the fan, simply put a piece of tissue in front of it. Please describe your reasoning for changing the airflow direction. […] cold air and pushing out hot air. To figure out whether your PSU fan needs to point up or down, start by looking over your PC case. Airflow through the case is important, so yes, it matters. 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. As for the pressure graphics, the arrows are supposed to represent pressure rather than airflow. 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? You want as close to a laminar flow as you can get, which just means as smooth and unobstructed as possible. I have 4 fans for my case, what direction should I have the airflow on each fan point to get maximum usage? Do: Mount the radiator so its airflow is not impeded by other devices in the machine. I'll be placing this towards the front of the case, with the radiator closest the motherboard, but I'm confused as to whether I want the fans to draw air into the system, or to pull the air out of the radiator and push it out. Or just make them both exhaust? 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. Alternatively, you can plug the fan in and place a tissue on a side of the fan to determine the direction of air flow. By leaving filters dirty or covered in dust, you reduce airflow and cooling power. The case I have is the NZXT Lexa Blackline. Don’t say you’re doing it to make it quieter. You want to keep in mind whether any components are going to be stifled for air by any obstructions. If you could explain the proper direction for each fan flow. I'm building a smaller computer for a family member and its an Antec P50 case. Noisy fans remedy – Install fan gaskets, use rubber pins instead. Computer fans are typically 12V or 5V. Aside from fans and vents the other major points of ingress include the many small gaps in the chassis and adjoining pieces. The direction of the PSU fan is crucial for airflow. Static pressure fans are great for radiators and case meshes, and use resistance to push heat through your PC build. But once you have your optimal cooling path planned out, it’s all about […], […] PC Cooling: How to Set up Computer Case Fans […]. (the side with the guard/motor support) 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. There needs to be rhyme or reason to the setup or else it becomes something wholly inefficient. This can sometimes happen with smaller cases fitting for mini-ITX motherboards, but even some larger cases have designs which are more favourable to certain GPU and cooler design… https://www.maketecheasier.com/intake-exhaust-fans-airflow-desktop-pc (I know homie answered already above, but this sitting here unanswered still bugged me.) A single intake fan with no exhaust fan is positive pressure. Ensure a good airflow in your computer – Make sure fans don’t “conflict” each other. Photo by Jeff Kubina, taken from Flickr Creative Commons, PC Cooling: How to Set up Computer Case Fans - HardBoiled. Thank you. To change the direction of the air moving through a fan you can take out the screws, and then flip the fan over. Most cases are designed with a certain directional airflow in mind–usually front to back, and bottom to top. Speaking of dust, you want to make sure that your computer remains as dust free as possible. If there is anything impeding your airflow, such as blocking the air from going through the vent from behind, a static pressure fan will be far more efficient. Air travels one way through a fan, in one side and out the other. 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. Also, flashing multi-color lights shouldn’t be the main feature of your case fans. This means I have positive pressure happening in my case. 2X Top slots (1 in front of the other) 1X Front slot ( bottom of front under expansion bays) 1X Rear 1X Side panel All slots fit 120mm fans. 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. Yes, but it’s 99% likely that you don’t actually want to do that. You will also be able to identify the Exhaust side as you will see power wires entering the fan motor. Should I add additional fans at the top of my case to help with proper air flow? How Best to Support Your Remote Workforce: COVID... Four Ways to Implement a Hygienic Return to... How To Maintain Clean Schools for a Safe... Could a Flexible Office be Right for Your... Business Guide to Proper E-Waste Disposal, RAID Basics: How Your Business Can Benefit, The Quiet Office: Turn Down the PC Noise - HardBoiled, Building A PC : 31 PC Building Mistakes to Avoid, PC Cooling: How to Set up Computer Case Fans, 5 Ways to Stream from PC to TV or Digital Display, Four Apps that Make Your Tablet a Second Monitor, 6 Reasons Your PC is Slow and How to Fix It, Born in the USA: Computer Hardware Made in America. Properly setting up your computer case fans is essential for efficient PC cooling. Many cases have removable filters that can be cleaned by a quick rinse. Please use this form to pose a question! Otherwise, you may end up with a toaster oven of a computer. The fan mounts in the square cut-away. For details on achieving optimal computer case air flow, see our case fan setup guide for more information. Welcome to the official subreddit of the PC Master Race. 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. In a perfect scenario, you’d have neutral pressure with an enclosed case because no dust would be sucked in. Your negative pressure graphic is not likely as you would never exhaust out the front. There was only (1) 120mm exhaust fan mounted at the rear panel. Looking straight down the airflow path. Build Help. Neutral would be when intake and exhaust CFM are equal. To avoid making your computer too loud, use fewer or quieter fans. If a blade is angled down and the fan turns in the same direction as the blade angle, it will blow forward. the direction the fan spins. Airflow Direction of CPU Fan This is all about my old Dell Dimension 4400's design. NEWSLETTER. I had an expensive gaming computer built and I noticed they installed the cpu liquid cooler radiator w/ (2) 120mm fans over top of the (3) 120mm case fans at the front panel. You’ll actually make it louder. Aim for slightly positive pressure, with slightly higher intake CFM than exhaust CFM. 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. Computer Fan Airflow direction? 4 years ago. I have one in the back of the case, two at the very bottom, one in the front. 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. You really could have spent a little more time on this to make it easier to comprehend for the beginners. To prevent dust issues, you can custom fabricate your own filters. The first image of the fan has been replaced. Air travels one way through a fan, in one side and out the other. Finally, faster fans … Thanks for the feedback. There are several options for how a CPU cooler can exhaust heat from the CPU. We break down the fundamentals of air cooling your computer so you can avoid a Chernobyl-like meltdown. Laptop Management Checklist for Remote Workers [Infographic]. A single exhaust fan with no intake fan is negative pressure. Just be sure to actually clean the filters once in a blue moon. Determine where the PSU is intended to fit; this is typically at the bottom of the case in most modern chassis designs. Different flow affects dust build up just as much as the case and house itself. EXPERIMENT #2: A FAN AIRFLOW BOX You will also be able to identify the Exhaust side as you will see power wires entering the fan motor. Pure Wings 2 PWM. More details Optimal air pressure with a computer case is one of the most discussed and debated topics in computer cooling. By changing the direction a fan is mounted, it can act as either an intake or exhaust. In hindsight, using another method to represent air pressure would’ve been better. Side-mounted fans should be used for intake, though they often don’t have air filters. i mean "maybe" the arrow is supposed to indicate where the "front" side of the fan is, instead of the airflow direction - so this is kinda unclear to the player. Of course there’s the CPU and GPU coolers as well as the PSU playing into it. So my question is, should i flip the top fan to be an intake and leave the one on the back as an exhaust? 0 0. Question here, how can you find out the cfm rating of the stock fans that come with a computer case? When mounting a computer case fan it's important to mount it in the right direction. Here's what you need to know about both types and which is better for your PC build. Every fan features a cubic feet per minute (CFM) rating, which measures of the volume of air it moves in a minute. Air should travel in clear path through the case. This morning i stripped the PC to clean out all the dust. 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