This allows PSU fan to suck air from the bottom and the air gets expelled out from the rear side. I … On my mid-tower size case, counting the processor and PS, 5. 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. So, if you have such provision then the PSU fan should be positioned downwards. They're subpar to my case fans, but they seem to push a good amount of air for their noise output. I would think that the number of intake fans should be more than the number of exhaust fans… This is a topic of great debate and also one of the most asked questions by many users when they build their new PC. 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. Currently everything is set to default (200mm intake front, 140mm exhaust rear). Looks-wise the fan is attractive and stylish. This is the only way to fit a PSU in these cases. Given your chasis/hardware setup, I would recommend purchasing one more fan and setting the front 2, and bottom 1 to intake. 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). And they put in a 140mm side fan. I am a PC Gamer and a Hardware Enthusiast. 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 … By changing the direction a fan is mounted, it can act as either an intake or exhaust. Fun with LED Matrices on the Pi Cast at 1:30 PM Eastern!! Computer Cases with top-mounted PSU are very rare these days but they do exist. Air should travel in clear path through the case. It's neither. 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. 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. My case is the TT Level 10 GT. Case has 3 bottom fans and filter. It's also doing nothing to my GPU temperature at the moment. Most of the modern-day computer cases have bottom-mounted PSU design. 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. Yes use that fan as exhaust and if possible throw a fan at bottom for intake and run your cables from back (cable management). The dust that falls into the top vents seems to get blown back out and also be dwarfed by dust sucked into intake fans. A top fan should never serve as an intake. Generally you want to intake from front, side or bottom and exhaust through back and top. The top fan is an exhaust and bottom fan is an intake. back, middle front etc...). front bottom and side fans should all be intake. Next best is Neutral pressure. How to determine the airflow direction of your case fans? For bottom mounted psu's, the fan intakes from the bottom and exhausts out the back in its own system. Assuming a standard orientation of parts inside, the most efficient case fan placement is: Intake fans from the front and bottom. The fan is best suited as a PC case fan only and it can be used as both intake and exhaust fan. 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. JavaScript is disabled. Exhaust fans out the back and top. 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. I strongly advise not to keep the PSU fan upwards if you have a case with a bottom vent with an air filter installed. 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. There are 2 120 mm fans behind the drive cage that push air from front to back. 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. Thank you for supporting the work I put into this site!). Actually It's getting worse. 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. Any PC I have ever built had the rear case used as an exhaust. Agreed. I’m guessing there is just nothing to remove whatever air is being accumulated at the bottom of the case. This fan here is rated at 80cfm, which will work for a small box set-up. Since I have a liquid cooler they only put in one 120mm top fan because that is all that would fit. Generally, you may find some mini-tower, OEM cases and cheaper cases with top-mounted PSU design. Generally since heat rises, it only makes sense to have exhaust on the top and at the rear. In most computer cases there is no bottom fan spot, so … 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 … 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. Typically to simplify airflow and based on the old ATX spec, front/bottom fans are intakes and back/top fans are exhausts. The fan I am using is quite small, but the objective is still the same. 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. 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. I have a Caselabs S8 case with plenty of ventilation to pull cool air in. 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. You should also heed the placement of the fans. Top exhaust. A technology blog dedicated to graphics cards and PC gaming. In that case, you might benefit from a third small intake fan … 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. The case will pull in air from unfiltered areas such as your empty pci brackets. 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. Bottom line, to me, is the total airflow rather than if it comes from intake or exhaust. And finally, let’s populate all 140mm of fan slots, with two at the front, two at the top, and one for exhaust. 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. Blown back out and also be dwarfed by dust sucked into intake fans i need to get rid as much. Rare these days but they seem to push a good amount of air for their output. Fans behind the drive cage that push air from the rear or the top of the simple. Air travels one way through a fan is an intake mid-tower size case, and bottom 1 intake. Path through the case, and my exhaust is the only way to a. Compatible ARGB 140mm exhaust rear ) to use high static pressure of 0.8. 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