I fixed PC cooling.

[Music] all right so this is my Audi RS3 it's not stock I've actually done quite a lot of work to it but the best thing that I've done to it by far is under the hood there you'll find a massive carbon fiber air intake from a company called eventuri and the reason that I went for that one specifically is because it has the largest diameter tubing and the smoothest paths for air flow in other words it provides the least amount of restriction to that turbo 5-cylinder engine and yeah after I installed that thing I mean the difference is just [Music] insane and it got me thinking you know why is there nothing like this but for PCs and I don't mean turbos or carbon fiber but at the very least how about some just proper directional air flow like like this is a pretty typical midtower PC we've got a couple intake fans at the front pointed generally at the stuff in the middle that we want to call then we have some exhaust fans on the other side to extract that heat but when you really think about it the air flow in here is just kind of a mess I mean it's somewhat intentional I guess but a lot of it is just Brute Force so what would happen if we fix that so what we're talking about here are dedicated airflow paths and taking some design tips from the adventury intake I want these paths to be as large and smooth as possible possible if a fan is meant to be calling a component I want 100% of that air to make it into that component with minimal restriction essentially we're making a custom intake and exhaust for our CPU and GPU now at this point I am pretty familiar with 3D modeling in Fusion 360 but man I've never modeled anything like this before so let's start with something that I do know how to do and that is just model the PC build using some pretty basic shapes so just by measuring up the case and then extruding boxes we can start building up the exterior and interor interior of the nzx dh5 and yeah it is pretty straightforward but the measurements here do need to be really spoton if I make a mistake by Just 2 mm that means our fan ducts will also be off by 2 mm so I really made sure to double check everything get all of those measurements super dialed in then I just added the massive CPU Cooler and the RTX 490 Fe no need to go overly detailed on those just the correct dimensions and basic shapes should be enough to hopefully get our fanu modeled correct corly now as for this specific build we've pretty much gone with the most power hungry Hardware that you can possibly go with today we've gone with the 24 core 13900 K from Intel and the RTX 490 Fe we also have two intake fans at the front and another one at the bottom it's one of the cool things about the nzx H5 and we'll definitely be making use of that and we also have two exhaust fans at the top I've also thrown in the new deep cool assassin 4 to cool off the CPU seems like a massive CPU Cooler and one of the better options that you can buy today but the main reason I went with this cooler is like take a look at how closed off it is air goes in air goes out and that's it there is no air escaping this thing at all so hopefully that means it works even better with our custom intake and exhaust ducts as for actually making those fan dos though I mean I honestly have no idea what I'm doing I've never 3D modeled anything like this before but I knew that there were some functions hiding in Fusion 360 somewhere that would make it possible and I ended up watching a bunch of tutorials on how to make intake and exhaust manifolds for engines which is kind of like a complex version of what I want to make in the end I learned that there were two functions that I needed Loft which Bridges two faces together and then shell which Hollows it out and that's it as long as I had the correct dimensions of each face I could quickly and easily make these fan docks so for the CPU Cooler I made one that intakes air from the top it mounts to one of the 140 mil fans at the top there which funnels cool air directly into the heat sink and then on the other side we have another one which channels all of that hot air outside of the case this way we don't actually have to worry about the GPU heating up or the ambient temp inside the case warming up the CPU Cooler will always have access to cool air no matter what now to bring these models to life we need 3D printing and yeah we have a lot of 3D printing to do these are easily the biggest 3D models that I've ever printed even on my bamboo lab X1 Carbon which is one of the fastest 3D printers that you can buy this footage is not sped up this thing is actually insane but still the massive CPU intake here took over 6 and 1 half hours to print luckily though no failed prints at all and the intake and exhaust here turned out exactly as I had planned now most of the stuff that I've 3D printed previously are just really small objects things like water cooling pump brackets and stuff like that uh but seeing something this big come to life is just something else completely I mean it legit looks like an engine part if it wasn't made out of plastic of course but yeah the print quality came out perfect and the dimensions as well pretty much spot on I mean the CPU exhaust bracket is pretty much perfect the you know fitment there is super flush this intake part on the other hand there is a small gap between it and the coer but I mean honestly I think it's close enough to keep moving forward the GPU vents on the other hand are going to be much harder and that's because the GPU intake vent needs to be massive the plan here is to Channel all of that cool air from that bottom intake up towards the 4090 but as you can see it's pretty big big too big in fact for my 3D printer so I actually need to split this one up into two pieces print them separately and then join them together this one as well doesn't really have any areas for mounting So the plan is to just use double-sided tape now one side of the 4090 Fe cooler design is a blower so our airflow there is taken care of but we do need to make a vent for that exhaust fan and for this one I did experiment with curved paths which would allow us to make a curved vent but to be honest it just didn't look that great for this one as well we do need to make enough clearance for those memory dims and even that 24 pin cable which does poke out a bit as well as work around that massive CPU vent so yeah this GPU exhaust was definitely the hardest of the four but in the end multiple hours of 3D modeling and 3D printing later the remaining ducks are ready to be installed and the look of the build as well is super super unique you know gets me excited because this is mostly a performance upgrade that I'm after here I mean man take a look at the inside of this thing there is like no empty space at all you can feel the difference too like if you put your hand on like an opposite side of a vent you can like really feel the amount of air that is being pushed out now compared to before where there was like not much air pressure at all as for the performance well it's interesting so cyberpunk 20177 here at 4K rrac Ultra settings that 4090 is really getting a workout pushing above 400 WS consistently and without our intake and exhaust vents it sits at about 75° then with the vents we end up dropping 8° on average as well as dropping about 200 RPM on the fan speed that is a massive Improvement and again all we've done here is channel the airflow where it should be going the case fans were 1,000 RPM for both tests and the room temp as well was 22c 8° man that is a pretty big difference with noise reduction as well when we take a closer look though things get even more interesting we have an 8° drop on the GPU Hotpot as well 84 down to 76 and the memory temp that dropped by 10° 87 down to 77 and again that's with an actually lower GPU fan speed which is kind of nuts so with our 4090 now running in the mid-60s that's actually only a couple degrees warmer than what you'll see on an open test bench those temperatures in a glass midtower case are simply unheard of so I'd say mission accomplished except for when we look at the CPU despite seeing massive drops on the GPU our CPU basically didn't see any drops at all both in our gaming stress test as you can see it's pretty much within margin of error but also even in isolated tests like rendering and you know I really thought that by creating these fan ducks that we'd be able to avoid the CPU Cooler sucking in all of that warm air from the GPU but it doesn't really seem to have made any difference this really bothered me so I ended up playing around a little bit more ended up flipping the remaining two case fans so now we have a complete top intake front exhaust setup and also played around with the fan speeds a little bit too I increased the speeds of the fans that are attached to the fan docks and then dro the speeds dramatically for the other two that aren't really doing anything and this actually solved the problem I guess previously there was like hot air recirculating back into the CPU Co event or something because now our CPU temps on average get a 10° drop what's more impressive though is that our hottest CPU core previously also known as the package temp that was heating 100° pulling in all of that GPU heat made it a bit toasty enough to actually trigger thermal throttling and lower clock speeds now though that hottest core is in the mid 70s that's at the same CPU Cooler fan speed 12200 RPM for both tests now with this top intake front exhaust setup we do see a small increase in the GPU temp it's an increase of about 2° but it's a worthy trade-off to keep our CPU much better off now and I mean we're still 6° cooler than stock with lower GPU fan speeds so it's a much better configuration all around now I'll be the first to say that there are obvious limitations to this setup right it only works with this set of Hardware currently and you if I want to use this in a different system I would have to redesign and reprint all of these fan Ducks which you know is not really a viable solution but I think more than anything this really goes to show how bad regular pc airflow is like in most cases you have fans not really doing anything you have airflow just generally getting really mixed up and in almost every single mid tower case you have a GPU which is directly heating up your CPU and it seems like the industry accepted solution to this problem is just mesh you know just make the entire case mesh if you want uh you know just Brute Force airf flow keep that interior temperature as low as possible and that kind of just Brute Force fixes everything this solution though disregards interior case temperature completely you know the air goes in is funnel Direct ly into the heat sinks and then it's ejected out immediately it did also take hours to design days to print and only works with this CPU Cooler this GPU and this case currently so yeah obvious limitations there but the performance I mean it is on a different level

Channel: optimum

Views: 1,274,406

Keywords: optimum tech, best atx case, best mid tower, gaming pc, pc build, best pc build, 4090 PC build

Id: cehXZftIYok

Length: 10min 45sec (645 seconds)

Published: Sat Aug 26 2023