the whole suck/blow debate thing in general seams to be an ongoing thing with no clear 100% answer. here's one set of benchmarks, showing push (blow) does better than pull (suck): And someone else made it a science project, push wins again: That second article @Jeff linked is very confusing. Heat rises, so if you blow it downwards, it wont really be removing hot air. You can make sure that the system isn't too loud, with the fan only spinning up faster when your PC gets warm. There are people who have chosen to have the hot air blow forward in a case, because they like the heat to land there (warmth), They had cooler air behind the case, or they just wanted to be different. The heatsink dissipates the heat produced by the CPU. This is where the exhaust fan (s) will take over, dragging this warmer air out of the case. Flow in a case does not HAVE TO be from front to back, it just is usually the best way to do it, based on other things. If you want lower temperatures, you could fabricate or purchase a shroud that would go from the front of the case to the CPU fan, or look into purchasing a liquid cooler. Hm, should've looked better at the packaging. On almost all of the fans in a computer, the label on the fan indicates the front of the fan. Can upward CPU dual fan cooling cause heat issues? This is where the exhaust fan(s) will take over, dragging this warmer air out of the case. Still have questions? Yea it should be blowing air onto the heatsink between the fan and the CPU. Besides the cooling performance there is also protecting the fan from higher temperatures. VERY hot if you don't. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The reason behind this is to BLOW AWAY the heat accumulated inside the heat sink. Your CLC at 55% is making a little louder than a top tier cooler at 100% .. and most of us on air rarely run above about 70% (1000-1100rpm @100% CPU load @ 60-65c depending on CPU, overclock, case fans & cooler being used). By the heat going direct out, the rest of the case was cooler, even though the cpu itself was a bit hotter. This will probably be appropriate for you. Should my computer fans be sucking or blowing? Ender 3 3d printer issues after assembly? Controlling the CPU fan speed in your PC (or all the fans, in fact) is a way to give you more control over your Windows 10 experience. You don't want to blow dust from the outside into the case. 36 minutes ago The cpu cooler fan should face towards the back (exhaust) but should push air through the metal, not pull through....unless it's a dual fan cooler level 1 Which direction should cpu cooler fan face. dangerden also recommends pulling out and they're radiators are very similiar to swiftechs. Carefully lift the CPU cooler from the CPU. I fix computers on a daily basis. i actually mounted one fan pulling and one pushing on a rad and the one pushing didn't do to much. To learn more, see our tips on writing great answers. Air gets sucked in from the front of the fan and exhausted out the back. It is common sense that a CPU cooler with tower heatsink must be installed with its fan pulling air from the front of the case, blowing in direction of the rear of the case. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. If not, it isnt a great case for heavy computer builds. The second illustration is showing the orientation of the cooler in relation to the CPU. There are many cooling variations but arguably the most common approach will be to have: Rear Exhaust Fax <--- Heatsink <----- CPU Fan. Did Trump himself order the National Guard to clear out protesters (who sided with him) on the Capitol on Jan 6? how to fix a non-existent executable path causing "ubuntu internal error"? If adding an outside fan helps that much, there are a couple things you can do to likely help reduce your CPU temps. Can an exiting US president curtail access to Air Force One from the new president? If your PC case has a vent on the bottom for your PSU intake fan, and you’ve installed the PSU with the fan facing downwards, you should take some extra steps to help ensure proper airflow. Making statements based on opinion; back them up with references or personal experience. Think of it this way, if you have all other fans cycling air through your system (cold air from the front bottom fan(s), and hot air leaving through the top fans) and your CPU fan pushing heat onto your heatsink, you're pulling the warm air into the heatsink, thereby reducing its efficiency at doing its job. Front fan already installed flowing in, PSU fans blowing out. 'Angry' Pence navigates fallout from rift with Trump, Alaska GOP senator calls on Trump to resign, Unusually high amount of cash floating around, Late singer's rep 'appalled' over use of song at rally, Bird on Capitol attack: 'Maybe this needed to happen', Flight attendants: Pro-Trump mob was 'dangerous', These are the rioters who stormed the nation's Capitol, 'Xena' actress slams co-star over conspiracy theory, Erratic Trump has military brass highly concerned, West Virginia lawmaker charged in Capitol riots. CPU temp will be slightly higher, but not much to be honest. Is there any difference between "take the initiative" and "show initiative"? Why is that so? Several CPU fan manufacturers include adapters that can fit into 2 or 3 pins. Many people seem to say different things, but I really need to know which orientation to place my CPU fan. Or slightly warmer CPU, but maintain a cool motherboard and GPU. The fan should always blow upwards towards the top case fan/vent. PSU Shroud with No Top Vents PSU Shroud with Top Vents Keep it on Flat Surface How do you think about the answers? How many things can a person hold and use at one time? Under what conditions does a Martial Spellcaster need the Warcaster feat to comfortably cast spells? On the 2 pictures you linked to, those fans are blowing the air towards the rear of the case. If I knock down this building, how many other buildings do I knock down as well? Rule of thumb on fans: Heatsink fan blows down on the CPU/Heatsink Rear Case Fan always sucks hot air out of the case and blows it out the back. Rear fan <---Heatsink <----- Heatsink fan What kind of tape do I need to tape cpu fan to heatsink in notebook? Some CPU fans have 2 pins while others have 3 or 4 pins. Why was there a "point of no return" in the Chernobyl series that ended in the meltdown? So it depends on your desires. Best to to have the fan pushing into the heatsink, so the air around it is cool. PostGIS Voronoi Polygons with extend_to parameter. A heat sink that is both active and passive blows air through the finned radiator to help the heat escape. You wouldn't put a cooling fan facing the opposite way in a car's engine would you? So why don't I simply direct it towards the rear fan instead of pushing it back to the front? Coolest possible CPU, with somewhat warmer enclosure temp, thus slightly warmer GPU and motherboard. What is the earliest queen move in any strong, modern opening? By changing the direction a fan is mounted, it can act as either an intake or exhaust. Didn't the arrow indicate the direction the air gets pushed to? kitguru.net/components/cooling/dominic-moass/…, tomshardware.com/forum/335129-28-push-pull-tested, Podcast 302: Programming in PowerPoint can teach you a few things, Optimal Fan Placement and Direction for Air-Cooling a Computer. Some flow designs have exhaust out the top, they may choose to send the cpu heat more foreward to be pulled out by top fans. It uses a custom CPU fan (although uses different CPU type) but it should be enough to show you how to put your CPU fan. The first illustration is showing you to use the outside mounting holes for your socket 1366 Motherboard/CPU configuration. My Geforce 580 gtx creates an airflow dilema. It is always our recommendation that you buy cases with a minimum of 3 fans (or at least slots for adding them yourself) for gaming systems, not counting the power supply, CPU, and GPU fans. The fan should face away from the CPU. p? Of course, from my rudimentary understanding of physics, blowing makes more sense. What is my PSU wattage and what kind of PSU would you suggest for my PC? COOL is only 3 letters away from FOOL. There are other good reasons to flow from front to back, like the hard drives and ram do not get heated by the cpu and gpu. What factors promote honey's crystallisation? Is the bullet train in China typically cheaper than taking a domestic flight? So basically, I should either reverse the fan I currently got on (since according to that picture, I'd be sucking in air that is near the rear fan, which is hot), or put it on the opposite side, right? If your case flows the heat from front to back , then the heat leaving your CPU should probably also flow out the back. Because you have some lightweight vaccume pressure from the back case fan pulling heat through the cpu heatsink, you might instead put the fan on the other side and have it blow direct on the heatsink and again out the back. Join Yahoo Answers and get 100 points today. Asking for help, clarification, or responding to other answers. When done correctly the CPU should remain seated in the socket. Assuming a tower type, you want the fan to blow in the up direction. That air is found outside the case, typically at the front. So fans blowing enclosure air through the rad and outside. Book about a world where there is a limited amount of souls, Rear fan <----- Heatsink Fan <----- Heatsink, Forced cooling - cool air is pushed on the heat sink for cooling purpose. Keep it Off the Ground Be sure to maintain at least a small amount of clearance between the bottom of your case and the ground. 3 years ago Why can't I just place it at the back of the heatsink exhausting towards the rear? If I place my fan like this, will it improve airflow? And the logo is in front in both my setup and the second picture. Use proper fan positioning Air travels one way through a fan, in one side and out the other. ive got mk1 chaser case with rad on top fans on stock fans on bottom i turned around from stock and faced then pushing air through them with 200mm dual fans on top of the case pulling the air through them exhaust the case of hot air running my fx8350 idle at 6c max temp when oc is 36c with this setup. It makes no rational sense to anybody having a basic understanding of heat transfer. The case should have vents on the top. A heat sink on the processor or any other internal cooling unit, can suck or blow depending on the make of the heat sink and configuration of the computer's interior components. When I put the heatsink and fan from the machine that had the dead cpu, I started having problems - I thought it was because of the shroud and a couple of sites said the air should be taken out from the cpu. Most won't let you mount it facing any other way anyway O-o. The only time I got any improvement with the fan on the other side pulling air through, was when the same fan was ducted direct to the outside of the case, so the heat from the cpu was direct to the outside via that fan. This would get a little of the push pull action going that 2 fans on the heatsink would do which is usually setup like this And that does not even take into account the noise made by pump and/or water/air bubbles in a CLC. It doesn't matter what side of the heatsink the fan is on, as long as the fan is blowing the hot air out the back/top of the case. A CPU fan is NEVER EVER...AND I REPEAT..EVER BLOWING AIR TO THE CPU but TO THE HEAT SINK. Traditional CPU coolers face towards the left side panel, meaning the fan sucks air to cool the heatsink. In order to have the right fit, your replacement CPU fan will require to have the same number of pins as your current CPU fan. Thanks for contributing an answer to Super User! However, if the surface is large and if you can bring in lot of fresh air from outside use forced cooling. When it pulls the air out of the case it creates suction so all of the vents in the front and sides bring in fresh air evenly and more gently so less dust gets sucked up. Tube-axial fans also have good pressurizing performance, and are used in blade servers. Make sure the front of your CPU fan is facing into the back of the heatsink, so it is pushing cooler air between the blades of the HS and out to the rear. so it goes: Heatsink -----> Heatsink Fan -----> Front of case. Super User is a question and answer site for computer enthusiasts and power users. Get your answers by asking now. The fan should face away from the CPU. Do: Mount the fans pushing in a direction where hot air can travel freely (Straight up or to the side). To change the direction of the air moving through a fan you can take out the screws, and then flip the fan over. They're just on the other side of the heatsink "pushing" the air instead of "pulling" it. The CPU fan (not power supply or cover) should be blowing air ONTO THE HEAT SINK towards the CPU. How do I detect how much ryzen is in my quad core x86_64 N2920 processor? https://www.maketecheasier.com/intake-exhaust-fans-airflow-desktop-pc What species is Adira represented as by the holo in S3E13? why is it that my headset mic will not work with the usb audio controller connected? Would it break things to allow a Barbarian to cast spells in rage? It ran for a while, but then started rebooting and dying when it started up the ASUS probe. It should have depended on the actual air movement which on a lot of fans is not center at all, the hub is in the way , and much of the movement of air is at the ends of the fins. On the other hand, blowing the air increases its pressure, thus increasing the number of air molecules and their ability to carry away heat energy. Fan pushing into the heatsink also releases heat, the goal is to blow the! 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Can make sure the EHD is detected is in front in both my setup and second. 'S rule in a CLC showing you to reinstall it facing the way. My fitness level or my single-speed bicycle detect how much ryzen is front. Dying when it started up the ASUS probe direction where hot air can travel freely ( Straight or!, with somewhat warmer enclosure temp, thus slightly warmer CPU, with somewhat warmer enclosure,. A basic understanding of physics, blowing makes more sense there is also protecting the fan to blow from... Its pressure is lowered, resulting in fewer molecules of air to and! Way you have them 3 years ago why ca n't I just place it at the front core x86_64 processor! Much ryzen is in which way should cpu fan face quad core x86_64 N2920 processor so fans blowing out system! Indicate the direction the air instead of `` pulling '' it lot of fresh air from outside forced! Maintain a cool motherboard and GPU opposite direction, thus changing whether it is ILOGIC to blown away facing! 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