willis_lai@idg.com Even experient PC builders sometimes have to bring forward a moment to suppose about which focussing a fan is blowing. But as our video shows, figuring it out isn't hard at all.
Spend enough time round PC builders and PC building forums, and you'll learn bad quickly that the management of a incase Oregon CPU cooler fan matters. When a fan's positioned for ingestion, the intent is to pull in cool bare. But when a lover is set as an exhaust fan, the mind is to throw out warm air away from the case or cooler. Both options are reclaimable depending along where the fan resides in the physical body.
Then how do you say at a glance which means the fan is blowing, especially when even experienced Personal computer builders sometimes own to get a instant to call up nearly it? It's pretty simple, even if your fan's producer doesn't make it explicitly clear.
Anticipate the arrow
Alaina Yee / IDG Several case fans (but not all) have an arrow showing the way of airflow.
Some fans have a small arrow on the shell that indicate the direction of flow of air. Whichever agency the arrow points, that's the side that air will louse up from.
(Yep, it's that easy.)
Consider the winnow blades
Non all fans have an pointer—Beaver State perhaps you're hard to assess a fan that's installed in a casing or on a CPU cooler and you don't want to unmount it to look to an arrow. Fortunately, you don't take the arrow to tell you the direction of airflow. Instead, merely look at the fan blades.
Alaina Yee / IDG Blades curving away from you? That's the ingestion slope.
If the fan blades look rounded—that is, they're curving inaccurate from you—that's the intake side. (For the more technical out there: The convex English of the fan blades is the intake side.)
Alaina Yee / IDG Fan blades curving toward you? That's the deplete side.
If the fan blades look like the inwardly of a smasher or bowl—that is, they'rhenium recurved toward you—that's the sap sidelong. (Put differently, the boat-shaped sidelong is where publicize exhausts.) Ofttimes, the exhaust side also has the hatching supports for the devotee's frame, with a annular sticker in the snapper that lists post and model information.
If possible, memorizing the fan blade shapes is the best method acting to determine fan direction—you can tell immediately which way the fan is blowing.
Why this matters
As touched on above, the direction of a fan matters for airflow. Knowing the way it points will determine the best places to mount IT, especially for a event. It also helps ensure that you actually readiness up the correct airflow shape for your purposes.
Most PCs use positive pressure to get plenty cool air passing through the organisation, which substance you need more fans set as intake than as exhaust. In pick out situations, a builder might instead take a negative pressure level setup, where you'll need more fans shot gentle wind prohibited of the case than pulling in. Both insure that your machine isn't cooking in the skilled air generated aside its components. But if you aren't compensable tending to the fans as you install them (Beaver State how the case came preconfigured), you could destruction up with a different configuration than motivated. Read our guides on how to install fans and how to configure fans for positive or veto pressure setups to get the full details along optimizing your Personal computer's cooling.
Editor in chief's greenbac: This clause was updated connected 8/26/2021 to include tutorial video.
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Alaina Yee is PCWorld's resident bargain huntsman—when she's not natural covering PC building, computer components, mini-PCs, and more, she's scouring for the best tech deals. Previously her work has appeared in PC Gamer, IGN, Maximum PC, and Official Xbox Magazine. You can find her on Twitter at @morphingball.
Led Pc Fans That Display Text on the Blades
Source: https://www.pcworld.com/article/3619063/how-to-tell-which-way-your-fan-is-blowing.html
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