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. Hence, my direction... back(/side) in top/front out. 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. Your thoughts will be helpful. Fun with LED Matrices on the Pi Cast at 1:30 PM Eastern!! Assuming a standard orientation of parts inside, the most efficient case fan placement is: Intake fans from the front and bottom. 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. Hate all you want but its a sick case with some great features. Also have a large intake on the side. By changing the direction a fan is mounted, it can act as either an intake or exhaust. The rear is set to exhaust. 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. Very good! Exhaust fans out the back and top. Generally since heat rises, it only makes sense to have exhaust on the top and at the rear. 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. http://tekgems.com/images/large/OPTIPLEX-745-PB-5R-soft.jpg, H500M - Compatible ARGB 140MM exhaust fan. Air should travel in clear path through the case. So, if you have such provision then the PSU fan should be positioned downwards. You can see the PSU airflow in the diagram given below. 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. On my mid-tower size case, counting the processor and PS, 5. Fan profile is designed so the exhaust fans lag the speed of the intake fans and have a lower top speed. The Rear or Exhaust side (the side that the air comes out of) … For intake fan it must be used in unrestricted spaces otherwise it is better to use high static pressure fan. 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. There are only two positions where computer cases allow you to mount the PSU, which is either on the top or at the bottom. It's neither. All the information we need, without a lot of unneeded commentary to distract us. Because warm air rises and top intake would blow it back to cpu and … 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 … You should also heed the placement of the fans. And for all four cases, the direction should not be reversed. Here the rear 80mm fan works as an exhaust fan for the PSU. Nothing will prevent you from reversing that, but that's just the way most fans are set up in cases. 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 . Here you will find all the information about Graphics Cards, PC Gaming, PC Components and Computer Hardware. There was a plastic parts tray setting in it. So that means more total intake CFM than exhaust CFM. 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. Be sure to maintain at least a small amount of clearance between the bottom of your case and the ground. 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). I have 2 120mm top intake fans, a 120mm front intake fan, a 120mm bottom intake fan, and a 230mm front intake fan. I’m currently using the Enthoo pro and am wondering where to position my extra 140mm fan and what job it should be. https://www.maketecheasier.com/intake-exhaust-fans-airflow-desktop-pc Doesn't matter if your fans are filtered. 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. The content is copyrighted and should not be reproduced on other websites. Negative pressure is fine, but I find that … Next best is Neutral pressure. A top fan should never serve as an intake. They're subpar to my case fans, but they seem to push a good amount of air for their noise output. Keep it Off the Ground. 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. For exhaust purpose, a rear fan at the top is much more efficient because hot air is lighter and always rises upwards. Note: Some older and cheaper Power Supplies come with an 80mm fan at the rear. Exhaust fans go on the rear or the top. 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 love Graphics Cards and I have been digging them since GeForce 3 series. You have made step one around the right avenue in relation to environment control inside your house. 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. 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. In most computer cases there is no bottom fan spot, so … 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. 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. 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. In my opinion you should set the front fans to intake and the top fan to exhaust. Given your chasis/hardware setup, I would recommend purchasing one more fan and setting the front 2, and bottom 1 to intake. Fix PSU Fan Not Spinning [Top Solutions & Causes], Top Power Supply Calculator Tools for choosing the right PSU, How to Find Right PSU for Graphics Card or Gaming PC, Top Tips to Install Nvidia and AMD Graphics Card Drivers, EVGA GAMING, SC, SSC, FTW, Hybrid & HC Graphics Cards Explained, Volta vs Vega vs Pascal GPU Architecture Comparison, Chinese Graphics Card Brands & Identifying Fake Graphics Card, Graphics Card Components & Connectors Explained, Nvidia Ampere vs Turing GPU Architecture Comparison, Top Advantages of having a Graphics Card for your PC, RTX 3060 Ti vs RTX 2080 SUPER vs RX 5700 XT Comparison & Benchmarks, RX 6800 vs RTX 3070 Comparison and Benchmarks, RX 6800 XT vs RTX 3080 Comparison and Benchmarks, Best RTX 3070 Cards for 1440p & 4K Gaming [Custom AIB Models], RTX 3070 vs RTX 2080 Ti vs RTX 2070 SUPER Comparison & Benchmarks. If your case doesn’t have bottom vents, and there is a solid panel instead then you have to position your PSU fan upwards. 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. It does not mix with the case flow at all. Looks-wise the fan is attractive and stylish. Jon, Hi Akshat, This allows PSU fan to suck air from the bottom and the air gets expelled out from the rear side. My case is the TT Level 10 GT. 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. The top and rear are exhaust fans. 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. It's also doing nothing to my GPU temperature at the moment. Generally you want to intake from front, side or bottom and exhaust through back and top. Most of the modern-day computer cases have bottom-mounted PSU design. 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. This is the only way to fit a PSU in these cases. Akshat Verma is the owner of this technology blog and has more than 15 years of experience in computer hardware field. This is a topic of great debate and also one of the most asked questions by many users when they build their new PC. And finally, let’s populate all 140mm of fan slots, with two at the front, two at the top, and one for exhaust. For a better experience, please enable JavaScript in your browser before proceeding. I have a Caselabs S8 case with plenty of ventilation to pull cool air in. The Intake-exhaust direction should go front-to-back and bottom-to-top. I am a PC Gamer and a Hardware Enthusiast. While the top 2 and rear 1 to exhaust. Back exhaust. Heat rises and you want to flow front to back. 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. There are 2 120 mm fans behind the drive cage that push air from front to back. Top exhaust. This fan here is rated at 80cfm, which will work for a small box set-up. Most of the modern-day computer cases have bottom-mounted PSU design. If you're talking about what the psu actually does, then it's both. Since I have a liquid cooler they only put in one 120mm top fan because that is all that would fit. PSU Fan Up or Down? The top fan is an exhaust and bottom fan is an intake. The tower sets on a small table I got from a place I used to work. I would think that the number of intake fans should be more than the number of exhaust fans… I have mine set up in pull (fans on top of radiator) with 2 exhaust and no intake. Fans themselves are neither “exhaust” or “intake” It only matters which way they are turned. 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. 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. The case will pull in air from unfiltered areas such as your empty pci brackets. 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. 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. He has a special liking for graphics cards and is a passionate PC gamer. 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. back, middle front etc...). 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. So, if you have such provision then the PSU fan should be positioned downwards. Almost all the modern-day standard ATX power supplies come with a 120mm fan that is mounted on the top/bottom side. It can get hot during load and for this, it comes equipped with a fan for cooling. A technology blog dedicated to graphics cards and PC gaming. 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. I also have an intake fan on the bottom of the case, and my exhaust is the top fan and front fan. JavaScript is disabled. 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. 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). Currently everything is set to default (200mm intake front, 140mm exhaust rear). This can be creatively modulated by CFM rating of the fans youre using. 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. Yes use that fan as exhaust and if possible throw a fan at bottom for intake and run your cables from back (cable management). I also have an intake areas such as your empty pci brackets fan on the fan. 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