That one long stray hair that clearly didn't come from Linus.. it had me fascinated.

That hair on Linus's shirt was annoying me to no end...

Very funny reference at the beginning 2g 1c lol.

You know, I've seen a lot of your videos, they've helped me come back out of the dark ages of computing, but I must say, you are very good at what you do. Your camera presence is great, you're very knowledgeable about your topic, you explain things simplisticly and concise, you're very engaging, and the crack about outside having great HD graphics had me rolling! Job well done sir.

Outside? pft not into permadeath games.

Was his First joke about "2 GIRLS 1 CUP"?

I'd been waiting for this video for a long time. Thanks, guys!

The one time I asked an older woman what a cheap, breathable brand of pantyhose was.

who else is here 8 years later?

Thanks for making the video Linus I wasn't sure how many intake vs exhaust fans I should have.

Live referenced this video so many times over the years. Easily the most concise info dump on case pressure

THIS IS THE BEST CHANNEL EVER! lol I found this channel yesterday when I was trying to find out about some stuff and stumbled across it. I've been binge watching ever since. Can't believe I never knew about it. I'm subscribed to a lot of tech channels including ncix, and knew about linus' other channel. Oh well, great channel though

Negative pressure (at a ratio of 2:1) actually keeps things cooler, longer. I did a quick test with all intake fans at 100%, compared to 20% CFM intake and 40-50% exhaust, and results were surprising. I ran just a CPU stress test, and fans at 100% were only a few Celsius cooler than fans at 20-40%. Creating negative pressure may invite more dust, but from what I've seen it's the best way to cool your PC.

Negative pressure invites dust in every nook and cranny which will shorten a computer's lifespan. Make sure that the ratio of intake to exhaust is 2:1, 3:2 or 4:3. Modern cases used by computer assemblers emphasize lots of intake fans: often 3 and sometimes 6 fans from the front of the computer, and half as many fans exhausting air. They want to build computers that are better than those made on assembly lines The trick is to filter the intake fans so the dust is kept at a minimum, keep the air flow high so components are adequately cooled, and use no filters on exhaust fans so the small amount of dust that does get in remains suspended and will exhaust out of the computer. With positive, managed pressure, dust will not come into the computer through the seams and panels. Ratio of intake to exhaust from 2:1 or 3:2 or 4:3. 5:4 would produce neutral pressure and even numbers like 3:3 actually behave as negative because heat rises , GPU cards and power supplies exhaust, thereby creating negative pressure near the bottom of the case. You have to assure intake fan superiority to get sufficient air flow and movement and the benefits of positive pressure.

Love your vids, keep up the great work !

Thanks Linus! My case has been gathering lots of dust on my intake fan, because there are 2 exhaust ones. I'll turn one around now that I know better. :)

"before we move outside, although I heard it has great graphics". Greatest line ever.

LINUS!!! THERE'S A HAIR ON YOUR SHOULDER!!!!!!!!!!!!!!!!!!!!!!!!!!!

I have a square space site from your suggestion! And I'm happy so far.

I have 3 120mm fans in-taking air in the front and bottom and 3 120mm fans exhausting air at the top and rear. Been a pretty good setup. Minimal dust and my system runs quite cool

HAHAHAH the comments made me change the quality of the video and figure out what hair they talking about. damn it people have time for this lmao

That hair really bothers me. What's the video title again ?

Should post what was missing in :50. Another great video though guys! Loving TechQuickie!

Best video in ages. Never knew this and now feel like a noob. Cheers Linus

Love this guy. This is edutainment at its best!

Since you filter the intakes, it greatly reduces the amount of air pushed into the case, so you'll need more intake fans for a balanced system and even more for positive pressure. Maybe 2 to 1 intake versus exhaust, takinf into consideration that psu also acts as an exhaust.

Love all the references in these videos

Thank you a lot. Very useful and logical information.

Haha so my computer is basically my own heater in my room lol!

When my s4 active gets warm from gaming, I put it in the sink and turn on the cold water. It cleans some smudges and it cools it down. Because it's waterproof.

Very useful and informative! Thanks.

I think I have a pretty good airflow in my Corsair 350D. 2 fans at the front as intake and one at the back for exhaust. It's not really unbalanced because the front intake it's not "direct", I mean, it has the brushed aluminum that's kind of blocking the intake. so 2 to 1 in this case it's pretty good. I noticed dust accumules just on the front filter (and the PSU filter aswell). I wish I had the top filter like the 450D though... since dust can "fall" in the computer while it's turned off. fortunately when it's on the positive pressure keeps it out.

Video quality is like you bought a new camera :o So clear picture..

Outdoors have greate graphics!? I laughed out loud!! :D

Great video. Keep up the good work.

Finally a simple a usable advice about negative vs. positive pressure in a PC case!

1:59 gave me a heart attack

Good video. I will definitely take this advice to heart. One question... does it matter which way the fan attached to the CPU heat sink blows? In other words, does it matter if the fan pushes or pulls air across the heat sink?

I have been using the Corsair 760T for about 3 months now and all the dust is caught in the dust filters. My system is always cool and clean and that's very impressive considering this is my small bedroom, with lots of dust.

full negative pressure seems to work best for me, yes it sucks in more dust but I clean it every now and then anyway. The case is a Coolermaster Elite 130, an ITX case, every fan blows outward and I've found it to be best for cooling because getting hot air out is better than getting cool air in. The difference is not night/day but this setup has been consistently cooler than having a front in-back-out setup or full positive pressure.

I tried the used panty hose trick and now my PC smells funny !!

Linus, the hair on your right shoulder annoyed me this whole video

So to recap if I got tht right : For general cooling objective the idea is the move the maximum of air (quantity and speed) trough the case. For dust buildups you have to make sure you have neutral or slightly positive "pressure" inside the case so as the avoid at all cost to have air flowing in trough various small holes around the case. So the best setup is to get maximum air flowing trough and at the same time beeing neutral or slightly positive inside. If not sufficient for cooling you can move more air out but this will be at the expense of dust buildups.

This has been and episode I've been waiting on for a while; there's very little information that isn't subjective or opinionated about this topic at all. Through sheer experimentation a few months ago I found that slight positive pressure worked great for me with my Fractal R4 3 120mm intakes with 2 in front of my case and 1 on the bottom coupled with 2 140mm fans on the top of my case for exhaust creating an airflow system that is shaped similar to an "L" that I confirmed by using a Shark Steamer that my gf uses to get wrinkles out of her clothes has made my SLi rig never exceed 70c.

Title is kinda misleading since you spent 65% of the video explaining the theory of cooling. Great video btw.

Linus, I'd love to see a video that goes more in depth about optimum fan placement and that answers some other questions for noob builders like: How does the radiator from an all in one liquid cooler affect case pressure? Do the fans on a radiator factor in to case pressure or are they exhausting the hot air from your CPU directly? Is there a place on your case that you should not put an intake or should not put an exhaust? I know these are noob questions and a lot of your audience is very savvy but I think answers to the questions could benefit a big demographic. And if anyone besides Linus reads this comment and would be so kind as to answer that would be great too.

Thank you so so much, thank you that you existed and this video also.

You earned my upvote with "I heard the outside has great graphics" sir ;)

Question: I have 4 intake fans and 1 exhaust fan, how's that for dust?

Could you do a video on coil whine? What causes it and how to fix it?

Excellent, I suggest 2 intake fans, because they have to deal with a filter and therfore slower (my current problem), the good thing is I can control fan speed with my motherboard, but that means I'm limiting my back fan speed. and making my front louder. this should help people.

Thanks heaven, finally someone who tells the whole story in 4 minutes instead of 25. A bit of graphic would have been nice, but listen and you;'ll find out

nice intro lmao dead

Mom, I took your pantyhose..... Don't ask!

Nice quality video, think you should make more

Thanks for sharing your insight :)

That big hair on Linus's shirt :o

Legend says that hair is still believed to be on that shirt.

I have the fans on the front and the one on the back of my case as an intake. Because heat rises, I use the fans on the top of my case as exhaust fans. The reason for that is for positive airflow and I also have a radiator at the top as well. My Cosmos II also has a 'basement' where my hard drives reside, so I have the fans on the sides down there as intakes and have the air exhaust out of the other side.

Damn good video Linus and team . Damn good. Keep up the fantastic work! XD

can you use vape to simulate airflow?

One more question...the intake or exahuse can be installed anywhere right? I got 4 empty fan holes..2 at the side and.the other 2 at the top

The face palm statue lmao! love this guy's vids

Intake on the front and outtake on the back for a good flow with intake on the side to keep dust from settling on my MOBO.

3 intake, 3 exhaust for me.

Hahahaha my amd build warm up my room so hot that im sweating

In this regards the fractal r4 is a beast for moving air not only that it is silent as well

thats some good information right there...

Linus nex time consider not to hug your wife or someone with long hair before filming, that hair on your shirt is driving me crazy... That was just a minor complain, as always great informative video

outside 2 has the best grafs 2014

good job explaining that

I have a Dell XPS 420 (if anyone has seen it) that has a carrying handle, and in that carrying handle there's a little grid in the front that sucks air in from outside into the CPUs heatsink, then with help of the power supply and GPU fans it gets pushed out the back. There's also an intake on the bottom edge of the case that blows air across the hard drives.

There's a hair on Linus' right shoulder

The entire beginning all I could look at was the hair on his shoulder XD

I test the airflow with my E-cig. Works great.!

A Fast as Possible on types of UPS would be nice as well as including the benefits of just running one in general.

dat hair on Linus' shoulder tho

Can't get over the hair on your shoulder. Great episode as always...

a swiffer work also..... i taped some static cleaning cloths to the intakes..........works!

i have a 7in diameter fan on the top, with a heat sink fan shooting cool air through from the back and out the top :) 2 vents on front and side.

"outdoors, although I've heard it has great graphic" makes me laugh everytime

Dat 2g 1c joke :D

3:09 its also how the nbc systems on tanks and other fighting vehicals work to keep things like chemical, radioactive and biological contaimiants out even in the event of the armour being breached... as long at the breach isnt toooo big

love your vids linus

kkkkkkkkk 2G 1C!!! that was nasty!!!

That hair on his right shoulder annoyed the hell of me :P

thanks for the tip what to use instead of proper filter.

you can use plumbers' "smoke pellets" to test air flow. Thanks for the vid

I have a smoke machine. Is it safe for the components?

that hair on linus's shirt doe...

ICC profiles? Monitor Color Calibration? Helpful video Linus! Keep up the good work

Wow; dat 4k vid quality is insane. I kept staring at that strand of hair on Techquickie LinusTechTips right shoulder. INSANE!!!

that fucking hair on your shirt drove me insane

YOU HAVE A PIECE OF HAIR ON YOUR SHOULDER thanks 4k.

I have 5 Intakes at 1000rpm and one exhaust at 1300rpm. I also have a 140 and 120 fan on the massive Noctua hestsink at 1200rpm. This works great with my 5600x boosting to 4.9ghz

Would adding 2 exhaust fans on the top 1 on the rear and 1 intake on the bottom and 1 on the front, would this be a balanced amount of airflow going through a gaming desktop pc?

1:37 He sounds genuinely disgusted with children...

That hair on the right shoulder!!!!!

i have pc case with 2 slot of fan.. 1 back and 1 righ side...what is the best direction for air to cooling my inside dekstop ...sorry bad English

I agree with the difference that a little bit of neg pressure helps air get threw dust filters a little more without buying expensive static pressure fans