The passive cooling on this is crazy, maybe you can do a complete fan-less/silent PC with a bunch of radiators

You drilled a hole in a motherboard and broke it. THIS is not the dumbest thing you've ever done.

"Only a $15 box fan" ... $200 (minimum) of radiators

So just get a panel of radiators to cool my pc, got it

Just looks like a typical LTT project

why not just use a car radiator and a water pump

I think you need to apply this to either a 7950X or a 13900K with an RTX 4090 to see if it throttles.

"We've come up with the most rediculous water cooling system EVER!" LTT... "Hold my beer" - Jay

$16 box fan, but don't forget the $440 of radiators that it's attached to

This is like watching a LTT video, but... it actually works... It's very odd - but I like it!

10:08 what the doctor says when you go to your great grandpa's hospital room

6:33 jay: "how do we show airflow" phil: "dw i got you"

Agreed, this is quite possibly the dumbest thing you've ever done, but I digress it's also probably one of the most brilliant things you've done yet. Seriously though Jay, hear me out on this. You've created a cooling system where ultimately the only bottleneck is the water block, or even the thermal medium behind the IHS itself, so it can therefore be used to test waterblocks, thermal compound, or to prove that Intel chips really do run much hotter than AMD with incredible accuracy! and it will be working passively for 2 reasons. 1: you've got a massive amount of surface area in the fans, and 2: you've got a very large displacement of coolant to absorb that heat each time the fluid cycles through the loop completely. I'm so hoping you kept this waste of radiators and a box fan intact purely for testing reasons, as it is genuinely brilliant! Ways you could potentially improve the rig though is to fit legs to it so it can be placed vertically so the convection effect can potentially come into play, and maybe an even larger (or additional) reservoir to just absorb more heat during peak loads during normal usage

I really want to see you do something like the old Linus Tech Tips "whole room water cooling" but do it the right way and show off how awesome it is when it actually works properly.

i would love to see a test with no fan turned on, and just with the 4 radiators (silent mode) if thats enough to keep it cold

jayztwocents is actually three different rappers: Jay-Z, Too Short, and 50cent.

FINALLY! I have always wanted to see this done. I also want to see it done with an aftermarket electric car radiator fan.

What I learned is that you should had made the 5 rads frame and then just let it be passive cooling, can't really get better than that :)

This isn't dumb, this is brilliant. I've never considered linking multiple radiators in a custom loop before, but it works great. I even have an idea for a case design that is just radiators. All of it.

The "passive" cooling is the part I'm actually impressed by. Although it's not *really* passive (the pump is still mechanically circulating the coolant dynamic (water), a well-sound-insulated pump is going to be a helluva lot quieter than a case full of fans.

"This is the dumbest thing I've ever done..." drill through a motherboard?

*Next Video* Jay-"so i've bought this car radiator"

who's here after watching the video on LTT that went up today and remembered that this existed three years prior?

Should flip the whole rad/fan assembly so the air also blows air over the other exposed components. That much airflow would also cool the chipsets, RAM, the whole graphics card etc.

When did vaping become the standard for vaguely demonstrating airflow?

Get a second fan for a push/pull set up and see how high you can oc this. Then see if you can beat Gamers Nexus fire strike 3D score.

Yooooooo, I might actually do this when I custom loop. Imagine the acoustics when a passive loop keeps an overclocked system at ambient when it's not under a stress test

You are a total dork Jay... I love it dude. Keep at it!

JAY stay in this direction brother. love the channel man

If this is the dumbest thing you have ever done, you need to try harder. :)

“summer is a good time to travel” *muffled laugh through corona mask*

This is still one of my favorite videos. You always manage to take "jank" to a professional level.

next project use a cars radiator

It may seem dumb to others, but to Jay, this is the smartest thing he's ever done.

I run a Watercool Mo-Ra3 and love it. External massive rads are the way to go.In addition, a lot less tubing inside your case, pump and res also mounted to the rad. Functional and stylish and much better performing than equal money internal rads with lots of hassle and cramped space etc...

"This was a stupid idea" yeah but you're having lots of fun doing it. Also 32x120mm fans in a push/pull config might have been interesting. I have seen several cases with punchouts for external cooling.so many they expected this silliness.

Now that's some badass cooling

Now start removing rads, what's the minimum rads you need to maintain ambient?

These should be sold in stores you are a genius!

I like the test bench set up. Lots of airflow without restriction and easy to access for upgrades. A simple hinged dust and notouch cover could be fabricated. It would lift to the back and a prop rod hold it while work is being done.

Just do a car radiator alot bigger than those and 80 bucks brand new... Put a box fan 15 bucks at family Dollar works just as good and a lot cheaper

Now you just gotta try it in Push-Pull config...

Wait until january, hook it up to a mining rig and heat the office with it.

I would have liked to see a longer test with the fan off. This might actually be a solid and very quiet solution to cooling, if you have the space for that huge array of radiators. I'm wondering how quiet these pumps actually are, and I'm amazed the pump is able to run the liquid through so many radiators.

Jay: It's got absolutely no purpose or reason Me: *Likes*

Try it with a Delidded 7980XE! Seriously! You almost hit 5 on your chip, delid it and just do it!

💜DO MORE WITH THIS JAY💜

There seems to be one major positive improvement on this one that you did not think about: Why not put the blocks in parallel? Currently, only the first heat dissipation unit works at max. The next block gets lower temps and drops in efficiency thus resulting in less dissipation. The resistive forces(static pressure) inside the blocks force the pump more: the series circuit is longer with more resistance to the flow. Again, make it parallel in the that way you will get the max possible efficiency out of each radiator at the given coolant temperature. Use a manifold and keep the loop length the same for each radiator in order to get a well distributed flow. Maybe change the pump or simply increase the flow too. BTW your current heat dissipation rating is somewhere from 30% to 50% lower because you are running the system in series thus dropping the temps and efficiency for each next radiator.

I have wanted to do this for years! I've always wanted to build in WAY too many rads on a custom stand for a micro atx build and have one fan moving the air in or out of the enclosure.

How about a thermal image of the rads under load?

The idea of going fabless and for near passive (pump only) cooling is really interesting. I would like to see more testing with the fan off because the extra couple radiators and removing a few fans could be worth it for achieving near silence.

It's been years and every once and a while this pops in my head and I rewatch it...and It makes me want to do this in a full customer cabinet/desk.

MONSTER---MONSTER GARAGE! THERE'S RUBBER TO BURN, SPARKS TO FLY, THE NEXT JAYZTWOCENTS VIDEO IS JUST. AROUND. THE BEND.

This the type of shit Linus would do. I like it.

What you need is a refrigeration unit that makes direct contact with the coolant. I would start with a commercial diesel refrigeration unit of your typical semi trailer. It can reduce air temperatures down to -20 F.. But we're not interested in cooling air. I want a good sized plate fin heat exchanger that puts just a thin bit of aluminum between the coolant doing the cooling, and the coolant being cooled. Then we can test to see if airflow through the radiator makes it any more efficient or not. Directly cooling the coolant with a plate fin heat exchanger is a lot more efficient than cooling air, then using that air to cool your coolant. Of course, if you dont mind the noise and smell of diesel, you can eliminate the heat exchanger altogether and run the coolant directly into a commercial freezer unit - cooling the liquid down to -20 F. directly. At this point, the bottleneck becomes the surface area of the CPU. So, what we need a special CPU that spreads all the processing out along a square foot of space and a ceramic/aluminum lid for maximum heat exchange. Or perhaps a special motherboard that handles 16 separate single core processors - effectively increasing our heat exchange by a factor of 16. I think we can OC the chips to compensate for the performance loss of putting that much distance between chips. %*$# yeah!

The dumbest thing I've done is listen to my attorney. Every time...

Should try that with a Threadripper or the Core i9! This is the more extreme ones to experiment with this!

The air CFM is a function of the over all throughput. the fan is simply moving so much damn air that any loss of pressure between the blades has a negligible effect on the cooling capacity. now if you had some much thicker radiators with a much denser fin array it may the static pressure might be a more pertinent factor but not in this case with these puny (in comparison ) radiators.

I always wondered about it. Nice video Jay.

I would like to see a video where you run the benchmarks on progressively fewer radiators until you find where the temps rise above ambient. IE could you get the same results with 2 rads instead of 4?

Intel saw this and thought 'Nah, that's not enough cooling'...

This just goes to show that you cant cool 8700k lol

Lol fantastic man loving your program, best friend turned me on to you and I'm glad he did. You sir are a funny cat.

With passive cooling results like that, you've given me an idea for my recording studio pc...

Would be cool to see this with more GPUs or even cooling multiple systems in the same room! How many gaming PCs can it cool?? :)

Video suggestion: water cooled audio challenge - build an over clocked gaming/editing rig, with the lowest noise emission level you can. Maybe challenge LTT or someone to fight you over it?

This was actually really cool, Jay

I was going to build this and put into my Thermaltake Core X-9 a while back....still thinking of doing it, but using a large trans cooler for a car....I may still do it with all the car parts I have around the place

You should test this >> Remove 1 radiator, test again e see the results. Remove another radiador, test again, .... So we can see the difference!!!!

Next time ... Cool PC using A Car Radiator 😝😋😅

I would like to suggest, that you try integrating an air purifier into a system as the cooling system and as a way to help keep dust from collecting on composites.

Was going to build an outside (of the house) small automotive radiator system piped through the wall , with an temp controlled fan , to run multiple PCs . But after seeing gunk and gasket degradation covered on various channels now thinking about a closed loop system based on huge heatsinks. Will wait for the next gen of air coolers to decide as my idea look like it might be overkill as the tech develops.

Do more of this type of videos

6:22 that moment when he realized that someone is calling him and just immediately hid the phone. :DD

Have you ever thought of getting a no-ra3 radiator? They are kinda like this setup. I just got one for my rendering computer and I love it

This is very good test. I use 2x24" radiator with 10" fan for my peltier cooling system too.

Jay to Linus "Bruh hold muh Beer" 🍺

If it works, it's not dumb.

Add a flow meter. You may need to add a pump in series. That's a lot more flow resistance than a typical custom loop.

I'm curious to see if you could stick the radiators in a small frig to get sub ambient temps and use some kind of insulated tubing to prevent condensation.

Use the same 4 rad frame, and cover with the best fan types that screw onto each rad. 4x fans per rad, 4x rads: 16x little fans. Rerun the same tests.

this is the type of quality content I expect from professionals. thank you.

Next recommended video: "Correction, THIS is the dumbest thing i've ever done" gold

2018: This is totally overkill and just fun to watch. 2021: Where can I get one?

Almost as much radiator that the 1000D can fit.

I started looking into custom liquid cooling... had no idea how expensive things were! OMG! Those radiators are equal in cost to a top-teir graphics card.

This is actually a really good ghetto set up I would be down to do someday if I wanted to do an external rad set up and had a budget. Very smart idea

The best cooling solution i'v ever seen in a pc!! i keep this option in mind!!!

Do a diy fully passive build

God it makes me jealous when I see Jay in that room with about a million hardware boxes behind him!!!

"We'll figure it out" famous last words.

"so if you were interested in what kind of airflow we're getting" *vapes right into the god damn radiators*

I have a suggestion : Why don't you build a case around this radiator :)

Before watching this, I'm wondering if what I'm about to watch is really dumber than drilling a hole through a multi-layer motherboard PCB.

i once built a box, that held a tripple and a double 120 rad, a pump and a resevoir. I hooked it up to a q6600, and it was amazing :P

I love neat ideas like this.

"It still gets pretty warm" *CPU is almost at boiling temp*

What I learned from this: MORE RADIATORS

Amazing project, learned a lot from this

Please do an update on this with a 9900k or 3950X or threadripper 3rd gen or that 28 core xeon paired with either a radeon 7 or 2080ti. Love your work Jay!!!!