pc case bottom fan intake or exhaust

In most computer cases there is no bottom fan spot, so … Typically to simplify airflow and based on the old ATX spec, front/bottom fans are intakes and back/top fans are exhausts. I would think that the number of intake fans should be more than the number of exhaust fans… I also have an intake fan on the bottom of the case, and my exhaust is the top fan and front fan. And for all four cases, the direction should not be reversed. Also, the PSU will accumulate much more dust because of no fan filter, and there is also a risk of something dropping inside the PSU through fan grill, which may cause serious damage to your power supply. The case is SilverStone Raven X RVX01BR-W ATX Case (Black/Red). I can easily place the fan wherever on the top of the case (I.E. 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. I can easily place the fan wherever on the top of the case (I.E. There are only two positions where computer cases allow you to mount the PSU, which is either on the top or at the bottom. Top exhaust. Generally, you may find some mini-tower, OEM cases and cheaper cases with top-mounted PSU design. Yes, exhaust. For bottom mounted psu's, the fan intakes from the bottom and exhausts out the back in its own system. Sep 13, 2012 #3 You should also heed the placement of the fans. Very good! Also, if your computer case has short feet then you have to keep it elevated by providing some kind of packing or support beneath the bottom feet or stands so that the PSU can have a good amount of airflow. Thoughts? Negative pressure is fine, but I find that … Know Right Power Supply Orientation. The fan generates airflow of 67.8 CFM which is quite good and static pressure of only 0.8 mmH2O. Looks-wise the fan is attractive and stylish. I have 2 120mm top intake fans, a 120mm front intake fan, a 120mm bottom intake fan, and a 230mm front intake fan. Some of these cases may come with top PSU shroud too (very rare), so you have to adjust the PSU fan accordingly in the direction of the vents. (more intake fans vs exhaust). You can see the PSU airflow in the diagram given below. JavaScript is disabled. More critical: Front intake. cool master mini itx case Glite 110 fan up or down a fan is on top sort of. Because warm air rises and top intake would blow it back to cpu and … I had the fans in push (exhaust) under the radiator, but it got to be a pain removing the fans to clean cat hair buildup. In that case, you might benefit from a third small intake fan … There are 2 120 mm fans behind the drive cage that push air from front to back. Yeah I am I two minds about what is best, I have a 120mm exhaust at back and a h115i pro radiator on top with two 140mm Corsair ML fans. You have made step one around the right avenue in relation to environment control inside your house. The top fan is an exhaust and bottom fan is an intake. blowing into the case is intake blowing out of the case is Exhaust. The carpet will block the airflow to the PSU and in worst cases if you have no PSU fan filter installed then the small fiber particles from the carpet can get deposited inside your PSU and may also clog up your PSU fan. Currently everything is set to default (200mm intake front, 140mm exhaust rear). Intake filters can help too when cleaned often enough. I have a Caselabs S8 case with plenty of ventilation to pull cool air in. Some computer cases come with a PSU shroud or cover that acts as an extra protection for the power supply and also for the bottom-mounted drives. For intake fan it must be used in unrestricted spaces otherwise it is better to use high static pressure fan. Side fans should not be needed at all. If you still have any doubts regarding PSU fan orientation then you can ask your queries here in the comment section below by clearly stating your computer case model and PSU model. Well i can actually try to put the fan on bottom. So that means more total intake CFM than exhaust CFM. For this case I think it is better to install the PSU with fan facing back/rear so that it can draw cool air from the backside vents and expels it out from the top. It negates the most simple physical aspects of hot air and general case airflow. While the top 2 and rear 1 to exhaust. Jon, Hi Akshat, Fan profile is designed so the exhaust fans lag the speed of the intake fans and have a lower top speed. Hi, my case is a Silverstone raven with the motherboard mounted 90 degrees clockwise, PSU mounted top front. Almost all the modern-day standard ATX power supplies come with a 120mm fan that is mounted on the top/bottom side. back, middle front etc...). http://tekgems.com/images/large/OPTIPLEX-745-PB-5R-soft.jpg, H500M - Compatible ARGB 140MM exhaust fan. Bottom line, to me, is the total airflow rather than if it comes from intake or exhaust. So, here I am going to tell you on how to properly mount your power supply, and whether the fan side should remain up or down, depending on different conditions and types of PC cases. The fan I am using is quite small, but the objective is still the same. PSU or Power Supply Unit is one of the most important components of a PC because it is the only component that provides power to all your internal computer components that include a processor, motherboard, hard drive, SSD, graphics card, case fans, etc. If you have a larger full tower case, three intake fans at the front and one at the rear exhaust would be a good starting point. Air travels one way through a fan, in one side and out the other. Back exhaust. So if you're talking about overall case flow, it's neither. By changing the direction a fan is mounted, it can act as either an intake or exhaust. It's intake at the bottom and exhaust at the back. On my mid-tower size case, counting the processor and PS, 5. This fan here is rated at 80cfm, which will work for a small box set-up. The power supply is on the bottom and intakes from there and exhausts out the back. Here are the basics of fan placement (the bare-bones model): 1x Fan in the bottom-front of the case, near the drive bays (intake). Almost all these PC cases have vents at the bottom where the PSU fits and most of them have dust filters installed at the vents to prevent the dust from getting to the fan and PSU components. Exhaust fans out the back and top. Hate all you want but its a sick case with some great features. This is the only way to fit a PSU in these cases. Yes, dell pc like optiplexs check the link; lol thats some very directed air flow right there... You must log in or register to reply here. I love Graphics Cards and I have been digging them since GeForce 3 series. Yes, there are some fanless PSUs available too but they are quite expensive and are also not that much popular. back, middle front etc...). The answer is an easy one, should you have enough room between the intake and the floor (and your case has a grill on the bottom for a PSU fan … A technology blog dedicated to graphics cards and PC gaming. It is very important to mount the PSU in a correct manner or orientation because if you do it wrong then you can restrict the PSU airflow, and it can result in damage to the power supply and maybe some other components. Logically, the fan would be set to exhaust because hot air rises but what would be the effect of using it as an intake instead. Most of the modern-day computer cases have bottom-mounted PSU design. This can be creatively modulated by CFM rating of the fans youre using. My case is the TT Level 10 GT. So, here I am going to debunk this mystery and clear all your doubts regarding it, taking into account all the possible factors and conditions. There is a lot of confusion among new PC builders or even some of the experienced users that whether they should keep the PSU fan side up or down. I’m currently using the Enthoo pro and am wondering where to position my extra 140mm fan and what job it should be. Also, these carpet fibers are very dry and are static in nature, and may catch fire inside your PSU, which can cause serious damage to your power supply, and also other computer components too if you are unlucky. Next best is Neutral pressure. He has a special liking for graphics cards and is a passionate PC gamer. I have a Thermaltake ToughPower 850 rgb PSU and that says to point fan upwards with this model to help have an extra exhaust on system. However, I don’t think there are many cases like this out there, but if they are then you should avoid buying them in the first place, and rather go for a PC case with bottom vents and air filter for the PSU. The tower sets on a small table I got from a place I used to work. Never put your computer case on the carpet when you have a bottom-mounted PSU fan facing downwards. In my opinion you should set the front fans to intake and the top fan to exhaust. Here you will find all the information about Graphics Cards, PC Gaming, PC Components and Computer Hardware. Case has 3 bottom fans and filter. 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. Hence, my direction... back(/side) in top/front out. Do not mount exhaust fans on the bottom of the case; since hot air rises, a bottom-firing exhaust fan will be working against physics by expelling slightly cooler air instead of warmer air. Here the rear 80mm fan works as an exhaust fan for the PSU. https://www.maketecheasier.com/intake-exhaust-fans-airflow-desktop-pc Also have a large intake on the side. I’m now looking at using the 3 fans on the bottom of the case as intakes and using the PSU fan at the back top to pull air from the case and expel out the top, also have another top fan to pull air out. The Intake-exhaust direction should go front-to-back and bottom-to-top. If your case doesn’t have bottom vents, and there is a solid panel instead then you have to position your PSU fan upwards. You can clearly see this in the image given below. So what would you recommend in this situation. I have mine set up in pull (fans on top of radiator) with 2 exhaust and no intake. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. I’m considering having the PSU fan pulling air from the case interior and out the top so all air is filtered. Computer Cases with top-mounted PSU are very rare these days but they do exist. And they put in a 140mm side fan. It's also doing nothing to my GPU temperature at the moment. It's neither. So, if you want your PSU to look nice, then keeping the fan upwards is acceptable too, but i would still prefer it downwards with the filter. The Rear or Exhaust side (the side that the air comes out of) … Notify me by email when the comment gets approved. Fans themselves are neither “exhaust” or “intake” It only matters which way they are turned. This should provide a positive interial press. So, to solve this issue you can either use a wooden plank or plywood cutout to place your computer case or mount the PSU with fan facing in upwards direction. A top fan should never serve as an intake. Most of the modern-day computer cases have bottom-mounted PSU design. Assuming a standard orientation of parts inside, the most efficient case fan placement is: Intake fans from the front and bottom. Nothing will prevent you from reversing that, but that's just the way most fans are set up in cases. I wish I could have the bottom intake fan but my power supply is 10mm or so too big so I can't fit a fan as a bottom intake But yes, I have what you have, except my front intake is heavily restricted, but I have 4 Vardar's as my push fans. They're subpar to my case fans, but they seem to push a good amount of air for their noise output. I have done M.Tech in IT and B.E. The top and rear are exhaust fans. Doesn't matter if your fans are filtered. Usually side and front fans are more so mounted towards the bottom to middle of the case. I strongly advise not to keep the PSU fan upwards if you have a case with a bottom vent with an air filter installed. Any PC I have ever built had the rear case used as an exhaust. Just for fun, I wanted to show how easy it is to turn a PC fan into an intake, or into an exhaust fan. Keep it Off the Ground. Heat rises and you want to flow front to back. Generally since heat rises, it only makes sense to have exhaust on the top and at the rear. Some PSU shroud do come with top vents that may allow you to position your PSU fan up but if the bottom vents are given, then it is better that you should keep the fan in down position only, unless there are no vents given at the bottom for the PSU fan. Generally you want to intake from front, side or bottom and exhaust through back and top. It can get hot during load and for this, it comes equipped with a fan for cooling. Less critical: Side intake. (*This post may contain affiliate links, which means I may receive a small commission if you choose to purchase through links I provide (at no extra cost to you). Now I use a very old Coolermaster Cosmos case the first one with sound deadening on inside which has lower cut out and filter to point downwards . Since I have a liquid cooler they only put in one 120mm top fan because that is all that would fit. Given your chasis/hardware setup, I would recommend purchasing one more fan and setting the front 2, and bottom 1 to intake. It does not mix with the case flow at all. In these type of PC cases, the position of the PSU fan should be kept down only, because they generally don’t have vents at the top panel, but if somehow your case has top vents for PSU, then you can keep the fan position in upwards direction for better airflow and cooling performance for the PSU. You might have two large exhaust fans with a very high CFM and two smaller intake fans with a much lower CFM. The content is copyrighted and should not be reproduced on other websites. So, if you have such provision then the PSU fan should be positioned downwards. The rear is set to exhaust. You can keep the fan upwards as this will give you a better look at the RGB fan it has. Also, having a fan on the bottom means I can keep the panel on the side of my case (corsair 550d) on and its equal airflow (side panel fan is also a 140mm compared to the 120's throughout the rest). How to determine the airflow direction of your case fans? 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This allows PSU fan to suck air from the bottom and the air gets expelled out from the rear side. Fan Support – Up to 2 140 mm bottom fans (recommended intake), up to 2 140 mm top fans (recommended exhaust) Front/Intake Panel Type – Solid Steel Small form factor (SFF) PC … One fan in the front with higher CFM rating than say the 2 exhaust fans you could have combined is still positive pressure so keep that in mind. For most mid tower cases, you will preferably want around two or three fans on the intake on the front side of your PC and one exhaust fan. Almost all these PC cases have vents at the bottom where the PSU fits and most of them have dust filters installed at the vents to prevent the dust from getting to the fan and PSU components. Agreed. For exhaust purpose, a rear fan at the top is much more efficient because hot air is lighter and always rises upwards. For a better experience, please enable JavaScript in your browser before proceeding. And finally, let’s populate all 140mm of fan slots, with two at the front, two at the top, and one for exhaust. PSU Fan Up or Down? in Computer Science & Engineering. Exhaust fans go on the rear or the top. Yes use that fan as exhaust and if possible throw a fan at bottom for intake and run your cables from back (cable management). Pc Bottom Fan Intake Or Exhaust – Thus you get the choice to finally trash can that hunk of metallic you call an air cooling unit. The dust that falls into the top vents seems to get blown back out and also be dwarfed by dust sucked into intake fans. The first step is to find or buy a 12v DC plug adapter. Logically, the fan would be set to exhaust because hot air rises but what would be the effect of using it as an intake instead. Be sure to maintain at least a small amount of clearance between the bottom of your case and the ground. So, if you have such provision then the PSU fan should be positioned downwards. Your thoughts will be helpful. All the information we need, without a lot of unneeded commentary to distract us. This is because if you keep the fan up then the cooling performance of the PSU will get compromised because the fan will suck hot air that is inside the case, instead of cool air and blows it on the PSU components. Note: Some older and cheaper Power Supplies come with an 80mm fan at the rear. In a custom water-cooled system, you don’t want to keep the PSU fan up, because if somehow the liquid gets leaked and accidentally drops inside the PSU then your power supply will definitely get burnt out. front bottom and side fans should all be intake. Air should travel in clear path through the case. Typically the front side and bottom fans are intake fans. The case will pull in air from unfiltered areas such as your empty pci brackets. The fan is best suited as a PC case fan only and it can be used as both intake and exhaust fan. PSU Fan Up or Down? This fan works as an intake fan for the PSU that sucks in air and blows it on the components inside the PSU, where then it exits from the rear vents of the power supply. I … Thank you for supporting the work I put into this site!). How to Find out What Power Supply do I have? Currently everything is set to default (200mm intake front, 140mm exhaust rear). But with a broken rtx 2080 fan I need to get rid as m much heat as possible till the replacement fan arrives. There was a plastic parts tray setting in it. Actually It's getting worse. Always keep your cabinet on a solid flat surface and never on uneven, soft and mushy surfaces because uneven & mushy surfaces will restrict airflow to the PSU fan, and thus the power supply itself. Fun with LED Matrices on the Pi Cast at 1:30 PM Eastern!! I’m guessing there is just nothing to remove whatever air is being accumulated at the bottom of the case. I am a PC Gamer and a Hardware Enthusiast. This is a topic of great debate and also one of the most asked questions by many users when they build their new PC. Generally, the PSU shroud is a solid metal cover with no vents (mostly), so in such cases, the position of the fan should remain down only regardless of anything. Akshat Verma is the owner of this technology blog and has more than 15 years of experience in computer hardware field.

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