Static Pressure vs. High Airflow Fans As Fast As Possible

Techquickie ·Techquickie ·2016-05-06 · 1,072 words · ~5 min read
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0:00 when it comes to cooling down a PC many enthusiasts and Gamers want to make sure
0:05 that they've got some serious flow going on and no of course I'm not talking
0:09 about your questionable hairstyle but about airflow but unlike buying say uh
0:16 ceiling fan picking the biggest fastest
0:19 spinning computer fan you can find is not always the best solution don't get
0:25 me wrong fan sizes and RPMs how fast
0:29 they SP are important but an element of
0:32 fan design often overlooked by novice Builders is whether the fan is optimized
0:38 for high air flow or high static
0:41 pressure but what does that mean I mean can't any fan provide decent air flow if
0:46 it spins fast enough well actually different fan blades are engineered to
0:52 move air in different ways fans marked
0:55 High airflow have one objective in mind to move as much air as POS possible
1:00 through an open opening you might see
1:04 the marketing for a high a flow fan focus on its CFM rating which stands for
1:09 cubic feet per minute since a cubic foot is a measure of volume then this is
1:14 indicative of the actual amount of air that the fan can either intake or
1:19 exhaust or I mean if you think about it they're both going to be about the same
1:22 on the other side of the coin are high static pressure fans static pressure is
1:28 actually a concept in in fluid dynamics but don't worry too much you don't need
1:32 a degree in physics to understand how this relates to cooling down your rig
1:36 simply put High static pressure fans are better at forcing air harder through
1:42 small spaces they may not move the same
1:45 volume of air as a high air flow fan if
1:48 they were both in sitting on a desk with nothing to push through but they
1:53 typically blow air a little bit of air
1:56 more strongly so when exactly do you want to pick one over the other well as
2:02 a general rule high air flow fans are better suited to be used as case fans PC
2:07 cases tend to be relatively open inside that is assuming you didn't cram a bunch
2:12 of wiring into the front of it or like Snoopy or something meaning that being
2:18 able to move lots of air at once can result in more effective cooling by
2:23 contrast static pressure fans typically find their homes on things like heat
2:28 sinks or Cooling radiators cooling components like these often have lots of
2:34 metal fins that are used to increase the surface area of the device that needs to
2:39 be cooled and to dissipate heat so to
2:42 cool off the heat sink properly air needs to move through these fins with a
2:47 sufficient amount of force in this situation to make sure that the amount
2:52 of air moving through your heat sink is high enough you've got to have high
2:56 static pressure but that doesn't mean
2:59 that static pressure fans are a one-trick pony in fact they can often be
3:04 a good choice for chassis fans if you've got some kind of an obstruction that
3:08 might hinder airf flow otherwise for example many cases have hard drive cages
3:14 directly behind the front intake fan so in this situation a static pressure fan
3:19 can be more effective at getting the air through these small gaps they can also
3:23 be useful if you have a case with very narrow vents on the front or a fan
3:28 filter that's designed to filter the dust out of the air but is of course
3:32 going to obstruct airf flow since many
3:35 radiators and CPU heat sinks come with fans pre-installed it's a good idea to
3:40 ensure that they're high static pressure if you want to get the best performance
3:44 possible despite the fact that these fans are better for CPU cooling some
3:49 manufacturers stick with whatever standard airflow focused fan for
3:54 whatever reason to do your homework so you're getting the best performance
3:58 possible of of your new cooling solution after all there's nothing quite like the
4:03 feeling of seeing your temperature stay low after hours and hours of gaming that
4:08 is assuming you didn't build your computer into the side of an
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5:25 the video description so thanks for watching guys if you like this video hit
5:29 that like but but but if you disliked it then you can hit the like button Anyway
5:32 come on let's see if it works if I tell people to do it will they do it probably
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5:49 one thank you good throw a nice
5:52 glow-in-the-dark frisbee what's he going to do with it we
5:56 don't know