Since they sponsored this video it means that this is now a valid use case so now they need to make the mounts to add 14 fans on the cooler so everyone can get that sweet 1 degree lower temps.
Now, let's redo this project, but with delta fans. Y'know, the ones that come with grates because you would literally lose a finger in the blades due to the extremely high rpm
yep this i have a 120mm one the thing puts out pure power and sounds like a turbo jet it has easily cut my finger before luckily nothing serious just converting it from 5 pin to standard 4 pin.
@@virtualtools_3021 Yeah you would need to run power to the delta fans separately because those will try to pull a bit more power than what a PWM fan header is rated for.
Next try using blower style fans like you see in laptops... You could put quite a few together all stacked side by side instead of in front of each other thus preventing the blowers from blocking airflow from each other
He should indeed have put them in parallel instead of in series. After the first or second fan, the air is already going at the max speed, the other fans would have close to zero load moving air along that is already up to speed. In parallel tho a large area of air is being forced into a smaller area increasing the pressure which would help allot more.
Bet if you could get contra-rotating versions of those fans, running them in a giant stack would give you insane static pressure... Basically how server fan modules work but taken to ridiculous levels.
Not exactly how that works. Air flow is the volume of air that is produced by the fan measured by time. In this case, the air flow of a fan is measured in cubic meters per minute (m³/min) in metric units, or cubic feet per minute (CFM) in imperial units. In simplest terms, if you have a 5 ft x 5 ft x 5 ft enclosure, and a fan that produces 5 CFM, it will likely take 25 minutes for the fan to ventilate the hot air in the enclosure. (In actuality, it's not that easy.) Static pressure is the amount of air pressure that can be produced by the fan in an enclosure. In this case, the static pressure is measured in Pascals (Pa), or inches of water (inH2O). The pascal (Pa) is the SI derived unit of pressure used to quantify internal pressure, stress...etc. The unit is named after Blaise Pascal and is defined as one newton per square meter. Inches of water (inH2O) is defined as the pressure exerted by a column of water of 1 inch in height at defined conditions. At a temperature of 4 °C (39.2 °F) pure water has its highest density (1000 kg/m³). At that temperature and the standard acceleration of gravity, 1 inH2O is approximately 249.082 pascals. It's important to know that even though maximum values for air flow and static pressure are specified, the fan will not output both maximum values at the same time.
@@nightbirdds Really it's just however many fans it takes to go into the next room. He got a 1 degree improvement, because the air he's pulling in is now far enough away from the motherboard to avoid the ambient heat increase.
I remember OC3D doing this with 40 fans on an aio for an April fools video, that was silly and Dawid is even sillier so this will be a match made in heaven :D Edit: Thank you everyone for thumbs up! You're all way too kind
I had never heard of the video you were talking about, and I love the madness of it. The fact all the fans generated enough force to move the contraption forward was crazy
And in that scenario it would only make sense to use a bunch of 200mm fans instead of 120’s lol. Edit: or possibly a ton of delta fans stacked side by side to make the world’s loudest cooling solution
"we would like to sponsor a video of you checking out the Silent wing pro 4s" "oh wow, thanks... how many fans can I get for filming the video?" "uh, says here 14 is the maximum" "can I get 14 please" "sure, why?" "no... no reason"
Fan stacking is usually done to compensate restricted air flow, for example to force air though a 1m long 1U server. Considering you've already had the ideal air flow with 2 fans, it wasn't really a surprise that adding more virtually made no difference.
I would think staggering the fan speeds from slow to fast, towards the middle, would prevent the air from “stalling” as it moved through fans of the same RPM
As Dawid discovered, this isn't going to increase airflow that much regardless of tuning. When you see fans can flow a certain CFM that is what they flow. The only advantage here is a slight increase in air pressure, but there are limits to how much a fan can increase static pressure.
Yo Dawid, can you try and get fan spacers between all the fans? if you space them out about 1-2 inches betweeen each fan, the temps have to be better, the fans were getting choked out and they probably lost air as there was just too little air and too much fan.
The limiting thing is that all the fans spin in the same direction. After like the second fan, almost all the additional "input" will just go into spiralling the airflow more and more. That's why server fan assemblies use counter rotating fans and stator vanes.
This was super weird, entirely pointless and mindblowingly stupid. But absolutely fun and hilarious! Thanks for 8 minutes of this hilarity! And also : Bequiet! Rocks, been using their 750w PSU and 4 case fans in my rig for almost a decade now and they're still running just fine and just as quiet as they always have been. That speaks for quality, and I'm a big fan of quality, when I upgrade my rig next year I'm most definively buying Bequiet! products again.
I want a part 2 where you do something similar with an aio. I remember seeing a more significant difference in altering fan speeds on an aio compared to a tower cooler. So adding more fans might make a bigger difference then tower would, since the rad fins are smaller and thus offer more resistance. Okay, so the difference between 2 and 10 fans wasn't that good. But still people don't really try putting 2 fans on a rad anyways.
In my experience push pull can work well. I was using 2 x stock EVGA 120mm fans on the 2080Ti Kingpin 240mm GPU AIO Radiator, with the card producing a ~280W load in a 19c room, I then upgraded to 4 x Noctua NF12 120mm fans placed them in Push Pull configuration so 2 on each side and when fans run flat out the cooling system reduced GPU temperature by about 10c compared to the stock 2 EVA fans.
@@micb3rd I was thinking it might work well, but hearing this makes me think it's actually correct. Push pull is what will enable 13900k overclocking 😜
@@Olav_Hansen Haha Yes, I'm looing forward to testing the 13900K on Noctua NH-D15 with Push Pull and then will try a 360mm AIO Push Pull. I'm also going try some undervolting. My current 10900K at 5.1 Ghz is fine on the NH-D15, it only get a bit hot when running 5.3Ghz and pushing heavy loads. (I managed 200Watts draw in CPU @ 85C on Cyberpunk 2077 with RTX Reflections on!) which is about the max temp I'm comfortable with long term.
I would say, use the fans to prop up the GPU in an ATX case with bottom intake to prevent it from sagging since these days GPU uses 4 slots and so freaking heavy . The fans may serve a better use that way.
Diminishing Returns do exist everywhere but that hasnt stopped a wild Dawid yet :) Great experiment. I also never liked how the CPU cooler has such a long way from the rear exhaust fan/ hole in the box, just make it one " fan- tube" :)
Maybe next video you can try to flip the switch at the back to UHS to allow for maximum fan speed and see if it makes any difference. I think you had yours on medium or the lowest as 7:25 time frame. So, probably the rest of them are the same.
It looks awesome! 😂 I think a common misunderstanding thing with air coolers is that adding loads of fans or dramatically increasing heatsink size/surface area only really increases the capacity of the heatsink to cool larger heat loads, rather than cause outright temp differences. The actual temperature they can cool down to (given a sensible heat load) will remain somewhat the same due to ambient temps/temp coming off the CPU. This is why we get 'my Arctic Duo 34 cools just as well as my mates NH D-15 with the same processor' where that processor is actually an I5 12400. Because the heat load is so low and the temp difference between the two will be relatively small it's easy to draw that conclusion. If you were to strap that stock be quiet cooler assembly to a heavily overclocked 12900K for example it would go over thermal capacity, heat soak and throttle damn fast. I used to use a dark rock 4 on my 8700k (12400 now, the easy life!) When it was sat at a comfortable 5.0ghz overclock. Before that, running the aforementioned freezer 34 it would commonly sit around or over 90 degrees with the overclocked 120-130 watt heat load. The DR4 brought the overclocked temps down to 70-75ish However with stock clocks both coolers were not dissimilar on temperatures. The real test would be to see if that high wattage heat soak with the DK2 cooler can be delayed/prevented with the eleventy million fans!
the fans arent the limitation. its how much energy that can be conveyed to the heatsink fins themselves. you can add all the fans you want the temp wont change unless your able to get more transfer from the heatpipes and coldplate up to the fins themselves.
Man I love when my Silent Wing Pro 4(tm) fan start spinning and cooling my CPU, these Silent Wing Pro 4(tm) fans are running quiet(tm) and the Silent Wing Pro(tm) fans runs at low RPM, it really feels like these Silent Wing Pro 4(tm) are great.
The biggest benefit I got from adding a second fan on my Be Quiet! Shadow Rock 3 CPU cooler was that under normal load you could shave off 2-300RPMs in fan speed and have the same performance or temps. The deeper the fins is the better the result. The one here is almost half as deep as the Shadow Rock3. FYI.
Kind of a law of diminishing returns in play. The speed of the air being moved will be consistent, once you achieve the amount of fans needed to overcome the air resistance of the radiator. Still was fun to watch.
that just proves that the CPU heatsink itself from Bequet is awesome if the thermal transferer to air is already at its best with just 2 fans, if it had gotten a lot better that would have been bad
I was thinking using doweling in the holes would be great, slip a rod through all the fans and 'bracket' it to the cooler. It would also line up the fans well.
- Have you ever heard of the BeQuiet Silent Wing Pro 4 fan? + No, I've never heard of the BeQuiet Silent Wing Pro 4, what's special about them? - Exactly, you don't hear the BeQuiet Silent Wing Pro 4's + Oh, that sounds like the BeQuiet Silent Wing Pro 4's are amazing - Additionally the BeQuiet Silent Wing Pro 4 don't drop performance to the competition + Wow! The BeQuiet Silent Wing Pro 4's are awesome :0 😂😂😂 LOVED IT!
I have a Dell XPS 8940 with a 10th gen i7, 32gb ram and an EVGA 1660 Super. I added a the large Noctua heat sink to it and run it open case with an 8" desk fan blowing right into the front of it. It has a stock intake fan, a fan in the heat sink and a stock exhaust fan. It runs fairly cool when I am gaming on it. Can def feel the heat blowing out the back.
while stacking fans you should use counter rotating fans. One have to spin clockwise and the second should be counter clockwise. When using counter rotating fans you you increase static pressure which helps to cool better
It would be a lot more efficient if every second fan would rotate in other direction or would have a spacer stoping the airflow rotating in the same direction as the fans.
I am actually surprised that the temperature wasn't increasing again when you attached the third and fourth fan. Any difference in speed, because they will not all be running at exactly the same speed, will cause back pressure and a drop in airflow.
you need stator vanes in between fans, or they'll just spin the air around after the first couple, instead of accelerating it further. Providing that works, you could then produce a significantly higher pressure.
As the experiment showed, stacking fans in series doesn't increase the airflow. One fan would have to push the next fan to spin faster in order to get more airflow thru it. If you built a frame to mount the fans side by side, and a plenum to direct the air into the cross section of the cooler, you would be able to move more airflow thru it.
Very possible you reached the saturation point as to how much the cooler could actually move between the die and the heatsink fins. That'd be my guess as to why there wasn't any major gains after adding the first set.
Correct, what'd be really cool is if be Quiet made Dawid a one-off 6 tower air-cooler with 18 heat pipes and mounting space for 7 fans, it'd be insane, very heavy but omg how much TDP could it remove.
I think for that he only has to increase the fan speed of the ones already installed (the Pro version of the Silent Wings 4 goes up to 3000rpm, for whatever reason)
It behaves this way because, correct me if im wrong, also i dont remember exact formula, but formula for heat dissipation vs air flow/pressure basically has ^3 or ^4 xomponent related to air velocity in it, meaning that at some point if you replace your e.g. 3000 rpm fans with something ultrastupid like 230v giant fan that can cool some factory, it will make a diminishing difference, that's ofc assuming you're already above the "minimal sweetspot airflow" but ye, for 14 fans to benefit from it you eould need some super restrictive radiator
I guess the moral of the story is one push and one pull is the most efficient setup for any configuration that uses more than one fan mounted onto the heatsink.
Another round for this video would be that you make 2 fan shrouds that put those fans as parallel to get more surface area and more airflow. With that you try to get same airflow that those industrial fans do but more quietly.
It a shame you couldn't use Velada gloves to bind them all together rather than duct tape, to break up the product placement. I have he Lian Li Mesh 2 case. I had originally ordered a bunch of BQ fans for my PC, but found them to be anything but quiet. I quickly replaced those with Artic fans, and haven't looked back. It an interesting experiment, I wonder if you'd have seen more change if you had varied the fan speed so that the fans run faster as you get deeper into the wind tunnel, to overcome the added obstruction you introduced.
Silly yet an important test to do and to know about. I would have duct taped the cooler itself on the sides to force the air through it and not on the sides also to see if something changes.
Since they sponsored this video it means that this is now a valid use case so now they need to make the mounts to add 14 fans on the cooler so everyone can get that sweet 1 degree lower temps.
I agree.
geez, spoiler
All they gotta do is swipe Noctua's rubber pull fastener idea, and sell them separately, *At participating, authorized dealers near you!* LMAO.
I think they should legitimately just supply a kit with a few feet of duct tape in it and call it a day, do it for the memes xD
imagine doing this with like a 12900K
Now, let's redo this project, but with delta fans. Y'know, the ones that come with grates because you would literally lose a finger in the blades due to the extremely high rpm
yep this i have a 120mm one the thing puts out pure power and sounds like a turbo jet it has easily cut my finger before luckily nothing serious just converting it from 5 pin to standard 4 pin.
@@ninjanolen4932 and frying your mobo
Yup.. The 120mm 4A one will really make your pc fly...
@@virtualtools_3021 Yeah you would need to run power to the delta fans separately because those will try to pull a bit more power than what a PWM fan header is rated for.
@@dragonfyre79 yep I got 5a deltas on my server but the headers only go to 2.5 so I got them powered from molex
Be Quiet: Lets send him 14 fans for a neat little giveaway
Dawid: It's only enough or one setup though.
Next try using blower style fans like you see in laptops... You could put quite a few together all stacked side by side instead of in front of each other thus preventing the blowers from blocking airflow from each other
Compound blowers! Tsttutut
Nah adapt a leaf blower, now theres one no one else will have tried.
He should indeed have put them in parallel instead of in series. After the first or second fan, the air is already going at the max speed, the other fans would have close to zero load moving air along that is already up to speed. In parallel tho a large area of air is being forced into a smaller area increasing the pressure which would help allot more.
@@andrewwatts1997 True, it'd be cool to see a 3d printed manifold for that
Haha!! That’s a great idea. Although the leaf blower idea is even better.
Bet if you could get contra-rotating versions of those fans, running them in a giant stack would give you insane static pressure... Basically how server fan modules work but taken to ridiculous levels.
If we are talking server fans he would need something that spins at 3k+ RPM.
also some air flow fans further in the stack could be better than static press. units
@@UhOhUmm so like noctua industrial fans
@@nathanlarson6535 i wonder if any industry actually uses those. I was thinking about Sanyo or Sunon.
Not exactly how that works. Air flow is the volume of air that is produced by the fan measured by time. In this case, the air flow of a fan is measured in cubic meters per minute (m³/min) in metric units, or cubic feet per minute (CFM) in imperial units. In simplest terms, if you have a 5 ft x 5 ft x 5 ft enclosure, and a fan that produces 5 CFM, it will likely take 25 minutes for the fan to ventilate the hot air in the enclosure. (In actuality, it's not that easy.)
Static pressure is the amount of air pressure that can be produced by the fan in an enclosure. In this case, the static pressure is measured in Pascals (Pa), or inches of water (inH2O). The pascal (Pa) is the SI derived unit of pressure used to quantify internal pressure, stress...etc. The unit is named after Blaise Pascal and is defined as one newton per square meter. Inches of water (inH2O) is defined as the pressure exerted by a column of water of 1 inch in height at defined conditions. At a temperature of 4 °C (39.2 °F) pure water has its highest density (1000 kg/m³). At that temperature and the standard acceleration of gravity, 1 inH2O is approximately 249.082 pascals.
It's important to know that even though maximum values for air flow and static pressure are specified, the fan will not output both maximum values at the same time.
I think you needed 16 fans for any real cooling gains
If it took 14 fans for a 1 degree improvement, then it stands to reason that to get a 5 degree improvement you would need 70 of them.
@@nightbirdds Really it's just however many fans it takes to go into the next room. He got a 1 degree improvement, because the air he's pulling in is now far enough away from the motherboard to avoid the ambient heat increase.
@@setcheck67 Oh, I know. But the idea of him trying to make 70 fans work just makes me chuckle. :)
Or maybe put those fans side by side in some sort of air duct to increase the total air flow.
@@Max_Mustermann That would turn into a gigantic monstrosity of a construction and Dawid totally needs to do it. :D
This is the only UA-cam Content Creator I visit regularly to see just what crazy shit he may be up to. Glad to see he still doesn't disappoint.
I remember OC3D doing this with 40 fans on an aio for an April fools video, that was silly and Dawid is even sillier so this will be a match made in heaven :D
Edit:
Thank you everyone for thumbs up! You're all way too kind
Oh my, i remember as well, thanks for the memories!
@@liarus You're welcome :)
I knew it was a long time ago, but holy cow it's over 10 years old that video
was the first thing that came to mind when the thumn nail
I had never heard of the video you were talking about, and I love the madness of it. The fact all the fans generated enough force to move the contraption forward was crazy
@@charredolive should look it up, its ten years old on the 29th of sep, i looked it up on youtube....cant believe its been that long mind
I am thoroughly convinced if you had just added two more fans we would have seen a significant improvement. 😄
this is what happens when you give Dawid to many fans🤣
So I took a shot of bourbon every time he said "Silent Wing Pro 4" and I'm currently writing this from the hospital. Also I'm out of Bourbon.
You should build a cardboard adapter that uses all the fans surface area and funnels it down to the cooler. And then see what that does.
Think there was an older LTT that tried something to that degree
Sounds like a Jays2Cents video.
And in that scenario it would only make sense to use a bunch of 200mm fans instead of 120’s lol.
Edit: or possibly a ton of delta fans stacked side by side to make the world’s loudest cooling solution
Yes, that would probably have made more sense.
"we would like to sponsor a video of you checking out the Silent wing pro 4s"
"oh wow, thanks... how many fans can I get for filming the video?"
"uh, says here 14 is the maximum"
"can I get 14 please"
"sure, why?"
"no... no reason"
Fan stacking is usually done to compensate restricted air flow, for example to force air though a 1m long 1U server. Considering you've already had the ideal air flow with 2 fans, it wasn't really a surprise that adding more virtually made no difference.
Because he needed more airflow, but he increased pressure instead of airflow
Ok I’m now convinced that Dawid’s entire life is sponsored by BeQuiet and LINODEEEE.
Also this is the amount of times he said “Silent Wing Pro 4”
⬇️
I would think staggering the fan speeds from slow to fast, towards the middle, would prevent the air from “stalling” as it moved through fans of the same RPM
As Dawid discovered, this isn't going to increase airflow that much regardless of tuning. When you see fans can flow a certain CFM that is what they flow. The only advantage here is a slight increase in air pressure, but there are limits to how much a fan can increase static pressure.
Doesn't really matter the bottleneck is the cpu heatsinks capacity to transfer heat
This is kind of "Just because you can, doesnt mean you should" type of thing
if my math checks out you only need 816 more fans to achieve sub zero temps
"Dawid's videos have been pretty normal lately, I wonder if-"
* looks at thumbnail *
"The king is back!"
Yo Dawid, can you try and get fan spacers between all the fans? if you space them out about 1-2 inches betweeen each fan, the temps have to be better, the fans were getting choked out and they probably lost air as there was just too little air and too much fan.
The limiting thing is that all the fans spin in the same direction. After like the second fan, almost all the additional "input" will just go into spiralling the airflow more and more. That's why server fan assemblies use counter rotating fans and stator vanes.
Dawid should be force-fed single channel ram in the next video.
What's he gona complain about when ddr5 is the norm
can't believe you recruited and featured all of your fans for this video. stand up guy, dawid.
This was super weird, entirely pointless and mindblowingly stupid. But absolutely fun and hilarious! Thanks for 8 minutes of this hilarity! And also : Bequiet! Rocks, been using their 750w PSU and 4 case fans in my rig for almost a decade now and they're still running just fine and just as quiet as they always have been. That speaks for quality, and I'm a big fan of quality, when I upgrade my rig next year I'm most definively buying Bequiet! products again.
A spacer between the fan and the heatsink on reach side would help allowing airflow to reach where the motor of the fans block.
Would be fun to see if it affects coolers with even bigger heatsinks
Didn't know I was gonna watch a Big Black Cooler video this morning. And yet, it was just what I needed. Great job Dawid.
Now you need to do the same test with fans that make noise :) would love to see if fans that make more noise cool better or worse?
He could have switched them to gear 3 on the back for VERY noisy 3000 rpm.
@@Waldherz or use deltas that are 38mm thicc and 7000 rpm to actually cool it
rhe be-quite tie fighter Darth Vader would be proud Dawid... the force is strong with this one
I want a part 2 where you do something similar with an aio. I remember seeing a more significant difference in altering fan speeds on an aio compared to a tower cooler. So adding more fans might make a bigger difference then tower would, since the rad fins are smaller and thus offer more resistance.
Okay, so the difference between 2 and 10 fans wasn't that good. But still people don't really try putting 2 fans on a rad anyways.
In my experience push pull can work well. I was using 2 x stock EVGA 120mm fans on the 2080Ti Kingpin 240mm GPU AIO Radiator, with the card producing a ~280W load in a 19c room, I then upgraded to 4 x Noctua NF12 120mm fans placed them in Push Pull configuration so 2 on each side and when fans run flat out the cooling system reduced GPU temperature by about 10c compared to the stock 2 EVA fans.
@@micb3rd I was thinking it might work well, but hearing this makes me think it's actually correct.
Push pull is what will enable 13900k overclocking 😜
@@Olav_Hansen Haha Yes, I'm looing forward to testing the 13900K on Noctua NH-D15 with Push Pull and then will try a 360mm AIO Push Pull. I'm also going try some undervolting.
My current 10900K at 5.1 Ghz is fine on the NH-D15, it only get a bit hot when running 5.3Ghz and pushing heavy loads. (I managed 200Watts draw in CPU @ 85C on Cyberpunk 2077 with RTX Reflections on!) which is about the max temp I'm comfortable with long term.
I would say, use the fans to prop up the GPU in an ATX case with bottom intake to prevent it from sagging since these days GPU uses 4 slots and so freaking heavy . The fans may serve a better use that way.
@@micb3rd cool stuff
Diminishing Returns do exist everywhere but that hasnt stopped a wild Dawid yet :) Great experiment. I also never liked how the CPU cooler has such a long way from the rear exhaust fan/ hole in the box, just make it one " fan- tube" :)
Maybe next video you can try to flip the switch at the back to UHS to allow for maximum fan speed and see if it makes any difference. I think you had yours on medium or the lowest as 7:25 time frame. So, probably the rest of them are the same.
You got a Fan in Me Now.
Now ask all the other Fan Manufacturers to sponsor you.
this is the content i am subbed for
Sponsor company: We'd like to sponsor one of your videos, don't do anything too crazy though
Dawid: Too crazy you say, I got you.
You should try the fans in parallel as well as series. Cardboard ducting maybe
Bequiet: We're gonna send you a bunch of fans.
Dawid: Say no more...
You should do this again, but with a Dark Rock Pro 4, so you have two heatsink towers to cool. Just for science, you know.
It looks awesome! 😂 I think a common misunderstanding thing with air coolers is that adding loads of fans or dramatically increasing heatsink size/surface area only really increases the capacity of the heatsink to cool larger heat loads, rather than cause outright temp differences. The actual temperature they can cool down to (given a sensible heat load) will remain somewhat the same due to ambient temps/temp coming off the CPU.
This is why we get 'my Arctic Duo 34 cools just as well as my mates NH D-15 with the same processor' where that processor is actually an I5 12400. Because the heat load is so low and the temp difference between the two will be relatively small it's easy to draw that conclusion. If you were to strap that stock be quiet cooler assembly to a heavily overclocked 12900K for example it would go over thermal capacity, heat soak and throttle damn fast. I used to use a dark rock 4 on my 8700k (12400 now, the easy life!) When it was sat at a comfortable 5.0ghz overclock. Before that, running the aforementioned freezer 34 it would commonly sit around or over 90 degrees with the overclocked 120-130 watt heat load. The DR4 brought the overclocked temps down to 70-75ish However with stock clocks both coolers were not dissimilar on temperatures.
The real test would be to see if that high wattage heat soak with the DK2 cooler can be delayed/prevented with the eleventy million fans!
Ahhh I've always wondered this exact question. Excited to see this. Those are sexy fans by Be Quiet, I wish they'd make some RGB fans.
they did
are you living under a rock?
Lul they have RGB fans, and have for ages. I mean they are LITERALLY on the cooler in the video at the beginning.
🤔look at the picture on the Cooler Box
This is a great example of how airflow only take you so far and at the end of the day you really need more thermal mass.
YES!!! IM FINALLY FIRST!!!!!!
Ok then
*second
ok and ?
You have to respect Dawid for spending so much time with his fans!
Hahahaha too true
Take a shot every time Dawid says "Bequiet Silent Wing Pro 4s"
the fans arent the limitation. its how much energy that can be conveyed to the heatsink fins themselves. you can add all the fans you want the temp wont change unless your able to get more transfer from the heatpipes and coldplate up to the fins themselves.
Man I love when my Silent Wing Pro 4(tm) fan start spinning and cooling my CPU, these Silent Wing Pro 4(tm) fans are running quiet(tm) and the Silent Wing Pro(tm) fans runs at low RPM, it really feels like these Silent Wing Pro 4(tm) are great.
This is just the video i was looking for. Thanks😊
The biggest benefit I got from adding a second fan on my Be Quiet! Shadow Rock 3 CPU cooler was that under normal load you could shave off 2-300RPMs in fan speed and have the same performance or temps. The deeper the fins is the better the result. The one here is almost half as deep as the Shadow Rock3. FYI.
Kind of a law of diminishing returns in play. The speed of the air being moved will be consistent, once you achieve the amount of fans needed to overcome the air resistance of the radiator. Still was fun to watch.
You can see the workmanship that Dawid has done, by the amount of cuts and scrapes on his hands and fingers
Gotta love when Dawid does something crazy like this just for science.
that just proves that the CPU heatsink itself from Bequet is awesome if the thermal transferer to air is already at its best with just 2 fans, if it had gotten a lot better that would have been bad
Ive been here since a little ways into the channel. I took a break, but this vid got me on a dawid binge-o-thon
I was thinking using doweling in the holes would be great, slip a rod through all the fans and 'bracket' it to the cooler. It would also line up the fans well.
I literally skipped to the conclusion at 8:18 and I have to say, this video is splendid.
- Have you ever heard of the BeQuiet Silent Wing Pro 4 fan?
+ No, I've never heard of the BeQuiet Silent Wing Pro 4, what's special about them?
- Exactly, you don't hear the BeQuiet Silent Wing Pro 4's
+ Oh, that sounds like the BeQuiet Silent Wing Pro 4's are amazing
- Additionally the BeQuiet Silent Wing Pro 4 don't drop performance to the competition
+ Wow! The BeQuiet Silent Wing Pro 4's are awesome :0
😂😂😂 LOVED IT!
we need more videos like this thanks made my day
I have a Dell XPS 8940 with a 10th gen i7, 32gb ram and an EVGA 1660 Super. I added a the large Noctua heat sink to it and run it open case with an 8" desk fan blowing right into the front of it. It has a stock intake fan, a fan in the heat sink and a stock exhaust fan. It runs fairly cool when I am gaming on it. Can def feel the heat blowing out the back.
I think the extra fans will come in good use when you actually push the PC performance during heavy workloads. Maybe..
while stacking fans you should use counter rotating fans. One have to spin clockwise and the second should be counter clockwise. When using counter rotating fans you you increase static pressure which helps to cool better
It would be a lot more efficient if every second fan would rotate in other direction or would have a spacer stoping the airflow rotating in the same direction as the fans.
I am actually surprised that the temperature wasn't increasing again when you attached the third and fourth fan. Any difference in speed, because they will not all be running at exactly the same speed, will cause back pressure and a drop in airflow.
Someone did a video a while back and found how one (push) fan is all you need, nice to see this confirmed.
you need stator vanes in between fans, or they'll just spin the air around after the first couple, instead of accelerating it further. Providing that works, you could then produce a significantly higher pressure.
Plot twist dawid and his 12 fans caused the hurricane in florida
Fans:How many more fans you wanna add?
Dawid:Yes!
As the experiment showed, stacking fans in series doesn't increase the airflow. One fan would have to push the next fan to spin faster in order to get more airflow thru it. If you built a frame to mount the fans side by side, and a plenum to direct the air into the cross section of the cooler, you would be able to move more airflow thru it.
Based on vortex and eddy in fluid mechanics, it is impossible to synchronize each fans' air flow while minimizing interfering and blocking them
Well that's way better than the "it's going to make it worse" that I thought might happen.
I would describe this as “a weapon to surpass metal gear”
Dawid actually showing us his thermal paste application POG
BeQuiet: hey we wanna sponsor your video, do what you want.
Dawid: haha stacked air cooler go brrr
Dawid is the godly entity of creativity. Nothing else can explain this weird fun random stuff.
Very possible you reached the saturation point as to how much the cooler could actually move between the die and the heatsink fins. That'd be my guess as to why there wasn't any major gains after adding the first set.
Correct, what'd be really cool is if be Quiet made Dawid a one-off 6 tower air-cooler with 18 heat pipes and mounting space for 7 fans, it'd be insane, very heavy but omg how much TDP could it remove.
I especially loved that you did this on one of the lower TDP CPUs
All Hail the Be Quiet Silent Wing Pro 4 Human Centipede!
That's not a cooler, that's an obstacle course for air.
You Invented the Flux Capacitor ... that's what makes TIME TRAVEL WORK
I swear this guy got paid per utterance of the phrase "be quiet! Silent Wing Pro4"
Love all the engineers in the comments giving ideas -- very cool
What if 9 fans were used on an enclosed full size case? 3 Pulling from the front 3 blowing air out the back, and 3 blowing up at the top?
That fan mounting method is 100% Red Green approved.
Now for a follow up video, find 2 fans with the highest fan speeds to see if a faster fan will lower temps.
I think for that he only has to increase the fan speed of the ones already installed (the Pro version of the Silent Wings 4 goes up to 3000rpm, for whatever reason)
It behaves this way because, correct me if im wrong, also i dont remember exact formula, but formula for heat dissipation vs air flow/pressure basically has ^3 or ^4 xomponent related to air velocity in it, meaning that at some point if you replace your e.g. 3000 rpm fans with something ultrastupid like 230v giant fan that can cool some factory, it will make a diminishing difference, that's ofc assuming you're already above the "minimal sweetspot airflow" but ye, for 14 fans to benefit from it you eould need some super restrictive radiator
I guess the moral of the story is one push and one pull is the most efficient setup for any configuration that uses more than one fan mounted onto the heatsink.
I really like be quiet products. It's pretty cool they were happy to support a video like this.
This is why I'm a Dawid does tech stuff enjoyer, things I could only execute in my brain, Dawid brings them to reality
that behemoth was asserting its dominance over every other cooler simply by its expansive T-Posing
All you need is 2 140mm intake Noctua A14 fans and I exhaust at the rear and one exhaust at the top. Noctua fans are hands down the best
At this point Dawid is just a mad scientist who thinks of new ways to torture PCs for fun.
Another round for this video would be that you make 2 fan shrouds that put those fans as parallel to get more surface area and more airflow.
With that you try to get same airflow that those industrial fans do but more quietly.
I just watched a guy attach a bunch of fans to a CPU. In its entirety. Well done :D
What a silly man you are. We love it!
It a shame you couldn't use Velada gloves to bind them all together rather than duct tape, to break up the product placement.
I have he Lian Li Mesh 2 case. I had originally ordered a bunch of BQ fans for my PC, but found them to be anything but quiet. I quickly replaced those with Artic fans, and haven't looked back.
It an interesting experiment, I wonder if you'd have seen more change if you had varied the fan speed so that the fans run faster as you get deeper into the wind tunnel, to overcome the added obstruction you introduced.
Now I know what I need to do. Thanks so much Dawid.
Silly yet an important test to do and to know about. I would have duct taped the cooler itself on the sides to force the air through it and not on the sides also to see if something changes.
Every single time he calls CPU fans by specific brand name :D
That is most definitely worth sending in to the fan showdown. I'm sure it will beat "the cheater"
People need to consider the added heat from each fan motor on the intake side, removing all but 1 on the intake side would produce best results.
You have to take a shot everytime Dawid says "Silent Wings Pro 4"!
My count is 13
Yooo dawid's getting the computer/electronic brands sponsors now congrats!