Example of a Funky PC Case - Cooler Master Sneaker X
As an owner of a mini-it case, the answer is something I found out by myself recently. I really need both intake and exhaust. It really helps with temps.
Exactly. But also make sure your pc isn't on the floor/carpet. Get as much height as possible. I built a custom stand for my 011D so it has 6" of clearance underneath so it's only pulling air and not dust.
When air cooling with cases like Corsair's 4000D where you can put some space in between two 120mm fans on top, and no fans on the bottom. I've actually tested and found to get around 5 degrees cooler if you put the one closest to the front as intake, and leave the one closest to the rear as exhaust. It pushes the cooler intake air from the front further closer to the CPU and GPU and because its seperated from the other one, its not sucking hot exhaust air back in.
Glad to see someone explaining the basics of airflow in a clear easy to understand way. As a bonus option, you can also have the cpu fan facing down and exhausting up. This can benefit you in some situations by both cooling the back plate of your gpu as well as directing airflow over the vrm heatsink at the top of some motherboards.
Also, you want to have a "positive pressure" environment inside the chassis (more fans blowing in than out): the slight density increase helps with the cooling a tiny bit and, again, it helps keep dust out.
Heat rises is a slow effect and any air flow will counter act it pretty easily. Main reason you do outflow on top is so you don’t suck in all the extra dust that can accumulate on too
Plus you don’t want to have negative pressure like having 2 fans that is exhaust and one intake, 2 fans intake and one fan exhaust is alright
Heat rising is a relatively minor force on these scales and I found two intakes on top worked really well because they're pointing directly at the worst sources of heat generation, the main issue is they'll supercharge the amount of dust that gets into your case so I had to switch my top spots to exhaust for the sake of keeping things clean.
I made an air duct from an exhaust hose and some Lego parts. The air comes with a 120 mm fan from the top is is directly connected to the large cooler. So I have a nearly dust-free case. I'm using Lego parts often in computer projects. Older server CPU coolers don't have mounting points for fans, this I could solve with some Lego Technic axles. I also found a method to fix fans screwless with Lego parts. The interesting feature is that fans can now be mounted in different angles. So it's possible to send airflow directly to the memory modules.
The main hangup is positive/neutral/negative pressure in case. Positive: more in than out, rest leaks through case gaps. This is still preferred because of cooler air brought in. Neutral: same/similar intake/exhaust. This is also preferred, you have ample cool air brought in, and heat going out. Negative: less in than out. This is not preferred. Less cool air in, air is pulled through the case gaps on all sides (including from areas where hot air is exhausted), stresses components (including fans on gpu/cpu cooler), and heat is not being pushed out adequately. Much of it sits there being circulated back over parts getting hotter.
Also fan filters, invest in those. Much easier to clean than those expensive fans.
I have an NZXT H5 with the built-in bottom fan that blows directly onto the GPU. Really one of the best purchases I've ever made upgrading was this case. Everything runs so much better now.
This was a good short. Actually enough info to learn something new.
Along the lines of those suggestions, I always try to have a slight positive pressure inside the case (e.g. +1 intake fan relative to the nb. of exhaust fans, if not via some fan controller). That way, I try to make sure that the case will not become a dust dump. What's complicated is to evaluate the correct intake pressure vs exhaust, because of the numerous air filters and openings that are present in most cases.
Positive pressure is very important as well. Neutral is fine, but positive is best. Positive pressure makes sure that the air actually goes through the dust filter.
Yeah I have the nzxt flow 5 or smth. It comes with two in the front (intake) one in the back (exhaust) and also one at a 45 angle at the bottom for the gpu. Have that at intake and then a radiator at the top with two fans at exaust. Runs pretty good for over a year now
I want that black and gold build. I’m saving for my first gaming PC at the age of 49 and while I want great performance I want aesthetics too, none of this flashing RGB garbage but that black and gold build shown in this short is gorgeous. Looks like I’ve found what I want my first build to look like.
Case in point My current build is done in my old pre-built case, which doesn't support front to back airflow and has no room for up and out, which forces me to put intake on top. Btw, the case is an HP omen obelisk case, if anyone is asking.
@danmar007