Static Pressure vs. High Airflow Fans As Fast As Possible

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There's more to choosing the right PC fan than picking a size, noise level, and bearing type! Linus explains the difference between high airflow and static pressure fans.
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28 мар 2016

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Комментарии : 675

@david90210ca 7 лет назад

my wife said "are you listening to that goofy dude again?" yes i am

@vdinh143 7 лет назад

Listening to Linus is one of my guilty pleasures. I put on WAN shows that I missed and fall asleep.

@QuirkCentral 7 лет назад

You should have said "I'm always listening to you, dear. Oh, you meant linus?"

@inund8 6 лет назад

haha, my wife hates his voice lol

@galanjarod 5 лет назад

Hahahahahahha gold

@iTzmajor 5 лет назад

haha "goofy"

@WilliamBoothClibborn 8 лет назад

of course a video about fans comes out the day after I buy a set

@cltwheels 8 лет назад

Same except I bought mine a few weeks ago :(

@youngblackethiopian 8 лет назад

+william Booth-Clibborn Did you buy the wrong fans?

@daveyboytellem 8 лет назад

Same except I bought mine 5 years ago ;(

@necrolord1920 8 лет назад

+william Booth-Clibborn Heh I just bought some a month ago myself. I had always gone with included fans in the past. Aka, the fans that came with my case and the fans that came with my aio watercooling cpu cooler. I decided I wanted to replace some fans to improve the look of my rig, so I researched this just a few weeks ago. For fellow noobs like myself, the exhaust side of the fan is the side that the motor is attached to usually, if the fan doesn't have an arrow to know for sure. Therefore, if you are attaching an intake fan, put the side the motor is attached to closer to the center of your case than the rest of the fan, if you are attaching an exhaust fan, put the side the motor is attached to closer to the outside of the case than the rest of your fan. Also consider what is known as a "positive pressure" setup for your case. That means you have more air coming INTO your case, than getting blown OUT of your case. The reasoning behind this one is dust. You will know where all your dust comes from, specifically your intake fans. Therefore, you could put filters with your intake fans and eliminate a large percentage of the dust in your system. There are always other places dust can creep its way into your case. If you have positive pressure (more intake than exhaust), then those cracks and holes will be expelling air, instead of sucking in air, making it much harder for dust to enter those tiny holes. I personally have 2 140mm front intake fans, 1 120mm bottom intake fan, 1 140mm rear exhaust fan, and 2 120mm exhaust fans attached to my cpu radiator in pull configuration. As I said earlier, I am not an expert because this is the first time I attached custom fans, but I'm hoping this info is helpful to people that were in the same situation I was in.

@ThirstysURL 3 года назад

Trust this to come out 4yrs before i purchase mine

@subashchandra9557 8 лет назад

Speaking of Houses made of Ice, lets talk about payment systems.

@nathanevans4030 8 лет назад

Lol

@aiddog10gaming82 8 лет назад

Yep

@Subject295 8 лет назад

+Subash Chandra "This video was Sponsored by Cool Master!" :D

@SuperKamoman 8 лет назад

+Subash Chandra yeh for once that transition got me. lol

@AKIOTV 7 лет назад

Speaking of iglos: Brainfreeze!

@raven1988able 8 лет назад

This seems like a very good topic for a "Workshop" type video - to see how much of a difference the types of fans would make in a congested vs airy case

@matthewkinney5474 8 лет назад

When TechQuickie has better content than LTT

@AnoEto 8 лет назад

+Matthew Kinney Because some of the videos should be TechQuickies... Like how to install a FREAKING GPU

@jaradipra 8 лет назад

+Vinyl Scratch or .... How installing GPU in FREAKING way. lol ...

@Zankaroo 8 лет назад

So its basically horsepower vs torque.

@Aleph-Noll 3 года назад

yeah actually that's a good way to think about it

@raymondjack 2 месяца назад

As a car guy, nobody knows what that means! Lol no jk. It’s just a pain to explain

@BenjaminDls 2 года назад

Digging this video up because even 6 years later I needed an explanation for static pressure vs high airflows and I knew Linus would have that covered

@tslash93 8 лет назад

I think that testing static pressure fans vs high airflow fans in a cpu heatsink and/ or a pc case would be a great video for your workshop series

@jaklawrence4301 8 лет назад

Some of the transitions that the LMG team have to do between a topic and their sponsor are comedy gold. This is definitely one of the better ones!

@RustyShackleford42069 8 лет назад

Awesome! So glad you just posted this video! I'm going to microcenter tomorrow to get a couple fans and a network adapter. Now I know what I need!

@parson7260 8 лет назад

Good stuff Linus! Thanks for the much needed info.

@FG2Zim 8 лет назад

pls keep posting consistently, I love this channel, I learn so much.

@macro820 8 лет назад

Come on Luke I want to see a does it matter video about static pressure vs airflow fans lol

@weinerglory 7 лет назад

Preproto wait are you joking or...

@DragoonDark97 8 лет назад

2:25 AM in Italy here, tomorrow I'll have an important math exam, hope this video will help me

@eyehatesyou3576 8 лет назад

It won't!!

@k35magnum 8 лет назад

+DragoonDark97 9am here, haven't slept yet, hope this video will help.

@TheLofren 8 лет назад

+DragoonDark97 Please follow up with how the exam went when you're done

@reggiebuffat 8 лет назад

Best of luck to you.

@LordDecapo 8 лет назад

+TheLofren lol. we all must know the outcome. the Internet is watching now

@bjimenez88 7 лет назад

Love your videos i always find them helpful, keep it up!

@whiteperson1 8 лет назад

i turbo charged my computer cooling, im getting about 20 psi of boost, with that i get both high airflow and high pressure

@avelmusique 3 года назад

Stututuuu

@LIITEMIES 6 лет назад

linus does ol ways good work on these videos.props to editors too :D

@RiverSiege 5 лет назад

Oh god, this has made the subject so much more understandable! Thanks Linus

@3DMatterMakers 6 лет назад

This is very useful information for 3D printing fans for part cooling fan vs hot-end fan... Thank you for this.

@coinsagE46m3 8 лет назад

Been wondering what the diff was between these two types of fans. Thanks LMG for yet another great video!

@knaj8222 8 лет назад

Loved this video a lot, I liked the randomness but keeping to the topic a lot.

@Sykeye7 5 лет назад

Great advices, thanks Linus!

@schlittytube 8 лет назад

Drink every time Linus touches that thing in his pocket.

@TheHeavy666Metal 8 лет назад

+Nicholas1984Autonomy I'm tanked

@Mitche23 6 лет назад

gigidy :)

@TAUTO2011 3 года назад

Thanks for that good explanation! I had no idea of this, so I'm with even more doubts about this topic everyday 😂. You only forgot to say how can we differentiate a kind to other, since most of sellers don't include such information.

@9danny81 5 лет назад

That transition to the sponsored part in the ending was so damn smooth.

@JKNProductions 8 лет назад

Great video. I will need this for when I build a computer later this year

@cherylm2C6671 3 года назад

This is the info I need! Thank You!

@demetrigorjaczew7383 8 лет назад

wow great timing on this one

@robban1987 8 лет назад

I would really love for Linus Tech Tips to do an experiment here. Could you do an experiment where you test AF vs SP fans as case fans and as radiator fans, measuring differences in case temps (for case test) and CPU temp (for radiator test)?

@MAP3D1234 3 года назад

I knew a bit more about this than originally expected, but even still, thank you, I learned some new things, always useful, also, on a side note, I originally found you guys when you were ONLY ltt, and then found out quite late to the game, your other channels, I just wanted to stop and take a moment and say, although I do not always agree with how you guys do certain things, thank you for making all the videos you do, because regardless of my ability to agree or not, with some of the things you guys do, you always make these videos useful for learning new things, so thank you for all that you guys do!

@Smoothies_010 7 лет назад

thank you so much linus i learned so much from you . from philippines :)

@MrDumptyTheDeadman 8 лет назад

Do a high flow vs static pressure test on a radiator and heat sink to measure the actual temperature difference. Could work as a workbench episode.

@Yoshimatsu414 7 лет назад

Nice video. Was always wondering about why exactly these were better for certain things. I was just told that they were better for radiators, so I bought some for my Rads lol.

@ZRovas117 8 лет назад

Linus, can you do a video of building a CPU INSIDE an igloo??

@Xhaleon 8 лет назад

+ZRovas117 Igloo-shaped CPU case. Made of genuine ice.

@crazycanadian7223 8 лет назад

+ZRovas117 I don't think he has the equipment to manufacture a CPU. Much less inside an igloo.

@VoidCraftedGamingHD 8 лет назад

+Crazy Canadian I think he means a pc

@crazycanadian7223 8 лет назад

VoidCrafted Gaming He prolly should've said that, then.

@Twiggy163 8 лет назад

+Crazy Canadian maybe ASML is kind enough to donate a multi million Euro machine for that....

@NeoVoodooTech 8 лет назад

Two thumbs way up Linus good job! It's all about blade design, number of blades and angles. The motor is more about noise level , longevity, rpm's and torque but is mostly negligible as the cheapest fan and the best fan operate so similar. A better electric motor with a better bearing will be more powerful, quieter and last longer. More blades will push more air but rotate slower and require more energy. Larger fans move more air have lower rpm's and are quieter as well.

@giant23 3 года назад

Verry well explained, thanks

@illidangraham2725 8 лет назад

I love your videos!! they are really well made and very informative but when you keep your voice at the same pitch for so long it's so hard to listen to XD

@HonestArse 6 лет назад

Real smooth transition there linus, gg

@mikael_johansson 8 лет назад

i WAS SERCHING FOR THIS KIND OF VIDEO 1 - 2 WEEKS AGO !!

@leafyslizardsquadhisss8641 8 лет назад

I needed this video

@TravisAviation 8 лет назад

If I had fans in push-pull configuration, would this be just as good as static pressure fans? (other than the obvious more fans and more space used)

@justinpatterson5291 3 года назад

I've got a densely packed itx case. So I'm picking a Noctua NF-P12 as the primary air mover. Probably mount the secondary fan as an extractor on the side or top panel.

@johnstancliff7328 6 лет назад

Thank you! that helped!

@MYshamanEYE 8 лет назад

when I upgraded my video card from a single to a dual i started getting over heat issues ,.. my solution ,.. I took off the side panel all together and set a 6 inch desk fan blowing directly into the open side ,my pc never ran cooler and surprisingly the sound did not increase in any noticeable way. the only down side is once a month i need to use a compressed air can to blow a small amount of dust out of the corners of my case.

@iLiokardo 7 лет назад

You are very helpful!

@NickTesoro777 8 лет назад

Have Luke do a Workshop video on this. It'd be interesting to see the real world results

@LiamIrwinsGooglePage 8 лет назад

All I could focus on is whatever Linus kept touching in his pocket.

@natshenkin 8 лет назад

Ket

@devilsfork100 8 лет назад

I find it quite irritating too!

@mattolstad5078 8 лет назад

+Liam Irwin I think it's the remote for the teleprompter...

@gabrielmccray3457 8 лет назад

+Liam Irwin prompter scroller

@DataStorm1 8 лет назад

+Liam Irwin I think that is the audio equipment for his microphone.

@titusnoel5757 7 лет назад

how can u tell if a fan is Static Pressure or High Airflow Fan

@Aleph-Noll 3 года назад

you can actually tell by the number of fins on the fan and the angle they have more fins usually means its for airflow. overlapping fins have good pressure

@titusnoel5757 3 года назад

@@Aleph-Noll OK thanks for the info

@jimh6189 3 года назад

Fans like any other component in your system need to have SPECS (specifications). The information comes in what is called a "datasheet". If you are shopping on Amazon you will not get such information. If you are really serious you need to be shopping on a real electronics components site like Digikey. You must realize also that the specs given will be for a specific condition. So "200 CFM" is worthless all by itself. It needs to be something like "200 CFM at blah blah blah static pressure environment". Sorry, there is no simple answer here- that's why we engineers get paid so much money ; )

@jojoperxvii 8 лет назад

Love your jacket!

@FutureAIDev2015 6 лет назад

Is the choice between high airflow and high static pressure an either-or choice or can one fan have both characteristics?

@bassmickey 7 лет назад

Linus you always kill it!!!

@rudolfsbriedis9987 7 лет назад

so i was checking fans on amazon for my first pc build and i saw that there are different types of fans so i checked out this video so i finally understand what are airflow and pressure fans but i still have one question what are air balance fans

@alexh7028 8 лет назад

can we have a video testing the difference between the 2 fans in various configurations on the workshop or something?

@RoximRox 8 лет назад

Hey, Linus and Luke, we always hear about using SP and AF fans for different purposes, but we also always heard about cable management and thermal paste application methods being important as well. How about a new Workshop episode on this topic to test it out by swapping fans out in different locations on the case. Like intake, exhaust, heatsink and maybe a radiator. So we see just how much of an impact it makes.

@floridaboz1 8 лет назад

+Aarekk i like this concept. do it guys

@hellterminator 8 лет назад

Is this supposed to be a joke?

@RoximRox 8 лет назад

***** No. That's the entire point of The Workshop. They put a plushie in a case and it didn't do shit when we always heard that cable management is important to get the best cooling. They just plopped thermal paste in different ways when we were always told that the application method was important to, again, get the best cooling. Here we have another example of "do this to get the best cooling" and I would like to see a video quantifying that in order to see just how much of a difference it makes. What if the difference is one degree again. Maybe the _less optimal_ fan is far cheaper compared to the _more optimal_ one but the lack of temperature difference makes that a fair tradeoff for someone. We got two Workshop videos in a row where we learned that nothing happens. I feel I am justified in wanting to know if this falls under the same category.

@hellterminator 8 лет назад

Aarekk OK, I get it now. You meant they should make a video about the effects of changing static pressure fans for airflow oriented ones and vice versa and the rest was examples of episodes they've already made. The way you phrased it was a bit ambiguous and I (and 5 other people, apparently) interpreted it as you suggesting they make episodes about cable management and thermal compound application techniques.

@RoximRox 8 лет назад

***** Oh, no yeah. I was trying to justify my pitch by making the claim that it would fit right in with the other videos they made. It may have been a bit weird to open my comment with the past examples. My bad.

@nhz013 8 лет назад

I liked the graphics in the middle of the video. what did you use, i want to learn and create instead of sliding pictures, I find that more attractive but not sure whether other people will get the messages

@ZAR556 4 года назад

High Pressure type for Intake and CPU Cooler, High Airflow type for Exhaust, Balance Fan type for Both. If you choose RGB Fan, those fans usually adjust to Balance type, but more into RGB than Cooling Performance.

@OGkush69x 4 года назад

Witch one you think would cause less tinnitus

@SRC267 2 года назад

And which one for the top of the case?

@R3in_Ch 2 года назад

@@SRC267 Intake, the back usually for exhaust

@SRC267 2 года назад

@@R3in_Ch I was gonna get one for top, but someone said 80mm fans are loud (case only has 80mm support for the top) plus, I don't think it will make a huge difference.

@techbase195 8 лет назад

Yesss... I've been wondering about this.

@techbase195 8 лет назад

Wow, I was so close to getting static pressure fans on for my next pc.

@DeadLoon 8 лет назад

That was a godlike ad segway

@robert99255 8 лет назад

Lol ikr

@Jakeyosaurus 8 лет назад

FINALLY, YAY!

@MrBlitzpunk 7 лет назад

"speaking of igloo... braintree!" i laughed harder than i should xD

@Ryzza5 8 лет назад

@Techquickie Why does it take so much longer to render a video than it does to render (and record) video game footage? Could there be a breakthrough just waiting to happen?

@galadvin 8 лет назад

Good as always

@ParadoxdesignsOrg 8 лет назад

and if nothing else, this video is a good reminder to grab that duster and clean out your case fans and prepare for summer heat.

@bzboii 8 лет назад

does anyone know if/when this sweatshirt will be available? It is so nice

@howardlam6181 8 лет назад

I always use high static pressure fans because of the dust and dust filter I put on my chasis

@mikemadske946 6 лет назад

both fans have airflow when operational. the difference between the two is the capacity of air IN/OUT, to which you need to measure with anemometer to get the CFM/CMH volume of air output/ input. both fans have static pressure when operational. the difference between the two is the blade design. low static pressure fans are good for open area, free blow. for a specific higher static pressure only needs if the inlet/ outlet has air resistance. examples are vacuums. for a better PC ventilation, you need the right air circulation inside the box. fresh air/ air in should be less 10% to 15% of the exhaust/ air out. hot air always goes up so you need to consider the fan positioning too.

@woobilicious. 8 месяцев назад

I would assume a high static pressure fans would create more resonance in a case if the intake and outtake were not matched too well, I noticed that my case sort of had a vibration sound (like 10-20hz) when I did 2:1 ratio of fans, only when the cover was on. It feels like it might be best to have a high flow outlet fans near the CPU cooler and a high static near the hard drive cage, and let the outlet "adjust" to the inlet / CPU/GPU fan movement, instead of having them constantly fighting each other and create a pressure delta inside the case, plus having an opening without a fan that has positive outflow seemed to have best results for me in terms of noise.

@likvor6110 Год назад

Linus can you make test, is the cooling of ps go better if we put case upside down but with old case where psu is on the top of case with 120mm fan and with high voltage gpu?

@TankTheSpank 8 лет назад

Make a video about the difference in temps about the two :) Please

@scott4398 7 лет назад

Are dust filters really restrictive enough to warrant SP fans?

@billyashworth3944 7 лет назад

Scott A If your 'airflow' fans also have a decent static pressure rating then you should be fine. The most you will gain from switching to SP fans is a couple of degrees anyway. I would be more concerned about noise to be honest.

@kurokuma3366 8 лет назад

Where did you get your jacket? it looks nice

@patrickrose2349 3 года назад

this channel has evolved so damn much...

@Direkt932 7 лет назад

what about front mounted radiators? which fan is the best option for that?

@OfficialMarlow2000 8 лет назад

I learn ALOT out of teckquickie

@johncrighton4738 3 года назад

Great vid

@The_JEB 8 лет назад

So im slowly getting parts to build a pc and im thinking of getting 5 of the Noctua NF-F12 iPPC-3000 pwm fans to replace the 2 120mm intake fans on the front, 2 120mm fans for the h100i gtx and 1 for exhaust out the rear of the case, would these fans be sufficient for cooling everything or should i look at different types for say the radiator or intake/exhaust?

@FindecanorNotGmail 8 лет назад

In fan data-sheets, the "static pressure" figure has been measured at no airflow = 100% air resistance and the "airflow" figure has been measured at 0 static pressure = 0% air resistance. If you plot those figures on a graph, you get only two points on the axes - not the shape of the curve that connects those points. What you want to know is one point on the curve: the amount of airflow for the air resistance of the thing you want to get air through: a heatsink, radiator or just the perforations of your PC case (which could have everything from 30% to 75% resistance). And don't think that fans have fan curves that look like straight lines.

@jackasshomey 7 лет назад

just use the Wind-Tunnel Technique -.-' it seems to work fairly well to cool my rig off i basically created a short tunnel out of cardboard to house two fans running in the same direction to increase their effective airflow

@Skinnflute 8 лет назад

This couldn't be of any better time for me. I'm about to buy some more case and CPU cooler fans.

@Cublyy 8 лет назад

Was literally looking for a video about this a few days ago. Illuminati.

@BushidoBrownSama 7 лет назад

0:14 "I'm talking about *air* style" FTFY

@flame_of_the_west8909 3 года назад

Well, for a rear exhaust do i need an airflow fan or a static pressure fan ?

@nikitamarinko7641 3 года назад

I am happy to have this confirmed.

@jimmypikachu5907 8 лет назад

Hmm thanks Linus. Been building rigs for years and never knew that.

@jaymuhammad7530 7 лет назад

Good video. I have a MSI 970. it has 3 case fan inputs but I can't control the 3rd!!!

@alanreader4815 8 лет назад

Linus did a High Airflow fan arrange your haircut. LOL :)

@kedwa30 8 лет назад

Good video. I learned something. :D

@laxmannate07 4 года назад

Just go for SP fans. Most modern cases have dust filters or solid panels that restrict air flow. The only place I put an airflow fan is the rear exhaust position and I would put a SP fan there if I had another. The difference in open air performance is negligible. However, the difference in restrictive applications is very noticeably poor for HA fans.

@Terry2020 4 года назад

laxmannate07 thx for sharing

@Scorpion_007 5 лет назад

Please suggest best cooling fans with great static pressure on Amazon if any for 16 inch laptops .

@ovotro 8 лет назад

After this video you got to make an episode on Finite Element

@iant720 8 лет назад

This is a great debate. Pressure vs cfm. On turbocharged cars there's lots of miss understanding about that.

@doubtunites168 6 лет назад

fuckin love your content. You always have the answers to the questions I haven't asked yet, but want to know :D

@Riotlight 8 лет назад

Is it possible to tell the difference between the types of fan just by looking at them? For example by looking at the type/shape of blade?

@RichardKincses 8 лет назад

Glow in the dark freezbe. Epic foreshadowing for the next Channel Super fun video ?

@justHaitham 7 лет назад

lol just wondering ; what's in your watch pocket that you keep fidgeting with?

@kentgladden4316 Год назад

Good video. Applies to ducted fan aircraft as well.

@maxharrison9918 8 лет назад

I am making a diy NAS case and I want to just use one intake fan at the back and have vents at either side of the case and get my 140mm fan to push the air in and out. I was wanting to get the fractal design 140 static pressure venturi fan? is this a good idea? can't tell if a high airflow fan would be better for this situation

@user-nj3sn6pp4v 3 года назад

Hi, im from 2020 here:) I have a question, what type of fan: AF or SP is better to use as an outtake fan on the back of the case? I have 3 SP on top, 3 AF on front side and now its a dilemma what to place on the back. Need help, please!

@sleeplessintokyo 8 лет назад

thanks! would helped if u threw in the angle of attack into the explanation imho :D

@SaitekFreak999 4 года назад

A thing i've noticed with pressure vs. flow discussions is that people think pressure is king on radiators and heatsinks. But what they fail to get is that it is a complete balancing act. Higher pressure just means that the air flow will take less of a hit if there happens to be restriction. < But since HP fans have less air flow in the first place, depending on the amount of restriction, a lower pressure but higher flow fan might be better. And since manufacturers present their best numbers, it is better to rely on reviews like thermalbench, those guys test the fans with restriction and give surprising results. For example, Noiseblockers eLoop has a very low static pressure (not more than some airflow fans) but absolutely kills every pressure fan on a slim radiator. Now on 60 or 80mm rads this might change, but it has to be tested at first. They also have great charts showing airflow at specific static pressures (basically, when you increase restriction you also increase the static pressure behind the fan and airflow will be 0 at the fans maximum static pressure and 100% in non-restrictive air flow).