1 Year Airflow Experiment - The Stunning Conclusion
Linus Tech Tips
·Linus Tech Tips
·2018-05-06
·
2,052 words · ~10 min read
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everyone's been waiting even very famous celebrities for the results
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of the one-year airflow test
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yes my friends we are still running them
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and we are doing the video but there's only one small problem
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luke doesn't work here anymore to do the stunning conclusion
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so we're gonna have to walk all the way over to Floatplane media's office
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hello and get luke to help me
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check out which one worked or if they all didn't work
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brought to you by tunnelbear tunnelbear believes the internet should
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be more open and private try it out for free at tunnelbear.com LTT we'll have
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that linked below
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i actually had very little involvement in this project what is going on here
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well there's any audi and in betweeny like there was before
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audi has more fans blowing out i think all the
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fans blowing out any has all the fans blowing in and in
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between e is fairly balanced they have all been running for over a
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year behind the old set but then we built this mezzanine
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that we're standing in and then we tore down that set so once the mezzanine was
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done and before the set got torn down they got moved up here to the office but
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they were out in the warehouse under the worst possible conditions literally
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construction zone let's not entirely dismiss the
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possibility that we will learn something today
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even if what we learn is that we're idiots and we don't know how to perform
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a controlled experiment so which one is supposed to be the worst by the
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conventional wisdom i think most people
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think that all in is the worst okay so let's get the other ones no wait wait
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wait no no all out is supposed to be the worst but all in these are these aren't
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so the top and back aren't this is supposed to be the bad one
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okay all out and then it sucks air into the crevices yes yes okay okay so this
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is the one we start with so the outside isn't really something
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to judge because they would have all had a bunch of dust settle on the top
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and it's not that terrible i mean like i'm gonna do one streak on
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the power supply yeah i mean it's not great it's not great um
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having a look at our fan though
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really makes me wonder how it is that people get their computers disgusting
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enough it's like to be like gummed up wow there's a there's cobwebs in here
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that bottom filter was definitely doing something
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and this is audi this is audi so that means this one isn't pulling through a
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filter it should have been sucking all the air in from elsewhere so this is
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another thing we have to be careful with this this is another thing where it's fairly case specific because a lot of
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cases don't have that huge filtered mesh on the bottom so you can also see here
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that with the audi case we've actually got a lot of dust build
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up here and you can assume that for every bit of dust on this mesh
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yeah more got pulled in yeah actually this is
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a good thing well sort of a good thing but it's a good thing to see so our
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graphics card does have a dust bunny inside it yeah
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so that's some build up so our CPU is good yep so on the top was good so it
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actually didn't suck that much in because it was blasting everything out
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which makes sense so the CPU is like sheltered almost because everything
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around it was like no get out yeah so you can actually you can see some dust
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streaks on these cable management holes and then but not much i bet you the
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graphics card was breathing through here and through here power supply is clean
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because it's through a filter actually that area of the filter is pretty concentrated
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any dust that's caught in this filter was already in the computer
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okay interesting so that's all pulled from
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inside and these fans have a fair amount of buildup in them actually i think the
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main takeaway with this one is that even in a construction zone
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where clearly there was a lot of dusty buildup on top
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most of your dust is coming into your case from the bottom
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so if you put your computer on the ground because we didn't have
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fans blowing out at the bottom that's right yeah you might have a bad time
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wanna do the other extreme the test is still bad we're already learning
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something hold on this is the one that is sucking everything in this is
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everything in yeah so theoretically yeah this isn't going to be good either
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well no okay let's start with the bottom okay
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ah interesting that's weird
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the power supply area doesn't have much dust no it doesn't
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because the air is blowing out of here getting
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filtered and then being sucked into here there's two fans like hold on there's
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one two three four five fans
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worth of pressure going out of here this effectively has a skirt around it oh
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yeah okay so there's dust on this but it's not on the inside it's on the top
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yeah it's definitely on the top that's so weird so the power supply
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is completely clean yeah
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how interesting that is interesting see we are learning things i did not see
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this one coming that is okay that's cooler than i expected i will definitely
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give it that i want to see the front okay
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it's filtering stuff this is telling us that this case's intake system is like
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not that great because these are about as dusty as the other one this stuff is
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on the outside because it's pulling through that makes sense
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oh some dust like flew away when you did that like and
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it's loose which is interesting
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our graphics card has no doubt that's a little more gnarly than last time
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definitely more dust just like CPU because there's okay there's also
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definitely more dust on the back fan CPU and the top
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so GPU is a little bit better power supply is better this case does
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not have filters on the top of the back so you don't get too experienced so the
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main takeaway from this one is that more
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airflow right around an area is going to give you a much much higher
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concentration of dust and that again poor planning
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is ultimately what's going to kill you yeah is the graphics card better or
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worse on this one oh it's way worse way worse
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so the GPU over there had to breathe in through this which was very apparent
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yeah and it breathed in junky dusty air that's right this one is actually
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breathing good air but that's the only piece and the power supply
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i wouldn't have thought that having a filtered fan like blowing towards the
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graphics card would affect the movement of the air inside like the currents
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inside enough to be the difference okay so this
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is sort of the um like the recommended
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way so it's neither one extreme nor the other most people would go with a setup
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similar to this so it's important to note that even though we've actually got
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four fans pulling in and two going out the ones coming in are filtered
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so these filtered ones coming in should have much less airflow than the
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non-filtered ones going out yeah so right off the bat our CPU is pretty good
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i would say almost as wow almost as good
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but not quite there is still no not
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quite at all there's definitely still noticeable dust
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and that one was like actually clean so this one what's interesting is that even
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though it's using a poor method of keeping dust out of
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your system what it does do is it focuses all the
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dust that it does pull in on the bottom and then sucked it all through that
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filter for this particular case and here a bit yeah and it's going to change with
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every case okay should we have a look at the filters yeah the bottom first yep okay i'll tilt
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it okay so as expected
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this one doesn't have an air curtain around it so the power supply does draw
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air through the filter filter didn't even stop everything nope filter didn't
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stop everything at all and there's a lot of dust on this yeah this is easily the
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most concentrated wow there's like hairs
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look at this there's like strands of wet okay there's a little bit of that on any
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yeah that makes sense because these are pulling in right
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yep yeah
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ugh and like it plumed
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okay so that's as expected so no dust bunny in the GPU
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GPU fan mostly clear this one had more
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fans and got slightly more total dust which
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kind of makes sense makes sense and the filters are slightly more clogged which
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makes sense but overall i'd say it's probably more balanced
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the CPU got hit but not as hard as it did
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on the really bad CPU case yeah but not as good as it did the other time
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but not as well as much as this one yeah internally so it ended up being in
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between which is kind of what we were aiming for we
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just didn't know it was actually going to work that way
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here you go then the main takeaways are
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on your intake fans you want to have filtered air to the
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greatest degree possible and the more airflow you have
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the more dusty buildup you are ultimately going to have yeah i think a
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balanced approach is good but you're gonna have to think about your
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particular case your particular setup like if you're on the floor then one of
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the big things we learned is you want a bunch of exhaust on the floor yeah to
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keep dust away from your system it actually works yeah yeah
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and then the other big takeaway is that freshbooks is the small business
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accounting solution for well small business owners and freelancers so
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whether you're running a plumbing business or you're running a house
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LTT we're going to have that linked below just enter Linus tech tips in the
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how did you hear about us section so that was actually more enlightening
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than i thought i'm surprised i thought they were just all gonna be butchered
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because of the construction zone so guys if you dislike this video then like come
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on we finally did it you were all asking for it but if you liked it hit like get
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subscribed maybe consider checking out where to buy the stuff we featured no no
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no no whatever we've got our merch store linked in the video description and our
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community forum which you should totally join for those of you going hey luke's
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back where did luke go he's working on Floatplane yeah uh go check out
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floydplane when is this video coming out i don't know
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there might be the alpha up yeah maybe or not
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see ya bye