 Now whether it's whiskey orange juice or Mountain Dew I guarantee you if it's in fluid form Somebody somewhere has filled up a loop with it cooled their computer and posted their results online So given how done to death this concept is I really never thought that we'd end up exploring the whole like weird or wacky exotic coolants concept that is until I read a comment from one of our viewers Jor Lagerstedt who suggested that we try using concrete Now hold on I know what you guys are thinking, but based on some of our preliminary testing I have reason to believe that this may actually work Over the last couple of days Alex has put together all the materials that we're gonna need to build what I believe is going to be the world's first concrete cooled gaming PC and This video is brought to you by honey Honey is the free browser extension that helps you save money at popular sites like oh, I don't know Amazon eBay and More by finding you the best coupon codes so go over to joinhoney.com slash LTT and get it now All right, so the first thing we're gonna need is some hardware So we gathered up the parts for a pretty sweet modern gaming PC here. We've got ourselves a Core i7 9700 K 16 gigs of memory we've got RTX 2080 not too shabby I mean the thing is if we're gonna be doing a test like this we want to use something that's representative of a high performance gaming machine because if you use all low power stuff And then you end up with really great thermal results Then all you've managed to demonstrate is that low powered hardware produces less heat and Doesn't run as hot as high performance stuff so like what's the point of that right? Exactly which one is this the master case something or other yeah, oh the maker 5t. Oh, this is an older one They did a bunch of sponsored stuff with it Oh No, it's not actually locked is it Can we unlock it from the inside? Okay, my left arm is a little skinnier than my right for no reason at all well problem solved Thermaltake wins by default Power for the motherboard There we go now if this works. I'm going to be Just it really shouldn't But then like you can't deny the initial testing yeah, you really can't We weren't even gonna do this video. Yeah people might be surprised how many things we try and just never makes it to video Now normally these days we use a triple 120 millimeter radiator But again if Alex's calculations are correct We should be able to get away with just a double and get similar or even better results So this is it for our build. You know it's actually got kind of like an Old-school charm to it. I like it Oh That is that is the heaviest bag of coolant I have ever seen before oh Oh, wow 34 kgs one part quick create mortar cement 2 and a quarter to 3 parts masonry sand Yeah, we're not putting sand in there. Well. Yeah, obviously reasons. Yeah, that'd be stupid Okay, I'll bring this guy I'll get a bucket of water Okay, what did you need my help for exactly? I don't know for whatever reason I thought we'd need two people want to like sort of hold it and make sure but this is actually working pretty well Do you even need such a big mixer? We need like a liter of concrete well have you ever made concrete before yes actually It's been a while No, but I think about it Yeah Next time we have enough Yeah I think it needs more concrete okay I mean if we want to take advantage of the cooling potential of it Then we have to make sure we actually have enough concrete in there, okay, that's starting to look kind of closer Look we're a channel. How the pros do it you want concrete tips you watch a concrete channel. Just look at this Yeah, this will be great Alright, so I guess let's get a baseline reading with water first Oh Right, I was just gonna start putting the concrete in No Ah shoot right yeah good call good call And that way we can make sure the system actually even works, too You know it's funny you seem to be expressing a fair bit of skepticism about this whole idea But need I remind you that you were the one who did the initial testing like look at this Hey it posted nice, okay, so we've got working hardware now. Let's just see if we can boot into Windows So we're at about 35 to 40 degrees idle. Let's go ahead and start our stress test here Okay, that's pretty good. That's like about what I'd expect so 55 to 60 degrees So everything seems to be working normally so it seems like it's basically leveled off like we could run it for a while longer But we're just at 62 degrees maximum. Yeah, this is exactly what we'd expect. Yeah All right, let's drain it We want to blow it as much of the water as we can so that we don't have I mean obviously the concrete is just concrete and water so a little bit of extra water isn't gonna kill it But we don't want to get our ratio off You know I'm beginning to have some second thoughts I need to be a bit waterier Hold on a second look at this as it moves you can actually see it turn more liquid That's what you were saying was supposed to help us right see that like you can see it's really solid, but as it moves It actually turns to a liquid So you can see the reservoir is actually filling up a lot better than we expected well than I expected anyway I don't know what your expectations were so I am more than halfway done check this out Yeah And what's crazy is you can actually see that even though it's clearly a liquid because it's flowing in there It's kind of solid right now How's that gonna affect things when we get the pump hooked up? Uh we might need to power cycle it a couple times, but it also might just work for those wondering This is why we used half inch tubing because you're gonna need a pretty thick with two seas Tube in order to get concrete through it, so uh how do I do this without making a mess? All the tubes yeah, oh, that's not a problem spray it down with some water And then just give it a wipe down with this. I mean it's not gonna be perfect, but yeah, dude Yeah for sure. Oh This is exciting so we've got two pieces of tubing filled so we can go ahead and attach the pump So Alex this is great. I've got two of the tubes on already mm-hmm and I can actually attach the other one to the rez right now. Oh nice. So hey, I guess this is the the moment of truth so when we do get the The heat and the pump going it should like make it more liquidy and just kind of Get her on through, but uh these are like the heaviest tubes I think I've ever felt and that that looks really thick in there Oh that sound do you hear the pump? Wait Wait, oh, it's moving it It sounds questionable But uh, I think you're right is it gonna boot though? No, I already posted You have got to be kidding me this shouldn't work Okay, so hold on a second. I was pretty scared up to now, but why does this work? Can you see are you seeing this? No, no the tubes like are you seeing this? Okay, so we're idling it's actually moving. I don't think a 24 we're doing 40. Check this check the step 28 maximum no way start We jumped like rate up to like 52 for wait, what do you mean 52 you mean on the other one? Yeah on the last one we jumped like Holy crap Even though the coolant is moving like you can clearly see there's flex that aren't It's almost like there's an inner channel of movement, but around the outsides of the tubes. It doesn't move at all Right now maximum 48 degrees So like we can leave this for a bit the thing about water cooling Is that normally you only get heat being transferred at the block and at the rad? Yeah Because like the great thing about water is that has such a high heat capacity, right? Yeah But that's exactly why water is supposed to be the best thing for liquid cooling. Well, what the thing is is that? Concrete is sort of like a ceramic of sorts But a ceramic that you can like have sort of flowing around right so It not only is like heating up there and there but it's also like getting into the concrete that can deposit the heat into the water all along here and then like all along here It will be just taking that heat away as it goes through here. That makes so much sense That's why nobody likes having like a concrete floor in their bedroom Like when you get out of bed and you step onto a concrete floor Immediately it draws all the heat away from your feet and like same thing with like a basement then That's why your basement never gets hot in the summer. So why has nobody ever explored this before? We are sitting right now at anywhere from 49 to 50 degrees Celsius That is a significant improvement and if you look at this the CPU temp is actually at 28 degrees That's a 10 degree Delta from just water. So this is incredible. I mean, it doesn't look great I mean we could we could clean it up a fair bit everything but you know, it doesn't look amazing But the results totally speak for themselves. I mean, is it high five time? I think so Ow! My hands are kind of cold from working with the concrete Which makes sense again. Like that's why your hands get cold when you work with it. Like it's so obvious now Linus you have to come see this. What's up? Just come along. It's a Kind of bad things Oh no, it's not the concrete PC. Is it? You know how we just kind of left it last night? Yeah. Cause like, you know, we were here kind of like Oh my god, it's not running Yeah, I think we had like a brown out or something last night Oh no! Oh crap, this like doesn't bend But like I don't know if you can see in there but this is clearly problematic Yeah like we could maybe try turning it on and seeing if it'll go but Oh, I don't think that's a very good idea Shoot Okay, so we've definitely identified the downside to concrete cooling But that kind of comes with the territory with any sort of enthusiast grade solution And I don't think it's unreasonable to expect people to have a UPS So given that we got a 10 degree improvement in our CPU temps I'm still comfortable recommending it. We have certainly seen computer hardware aficionados Do more crazy things for less benefit than that Speaking of more for less, our sponsor for today's episode Dollar Shave Club Dollar Shave Club is the place to go to get more great bathroom supplies for less And they've got some special offers on right now For just five bucks so you can get their shower, shave, or oral starter set That's right guys, Dollar Shave Club has way more than just shaving supplies now So the shave starter set comes with the executive razor and a trial size tube of their Dr. Carver shave butter The oral starter set comes with their weighty toothbrush and a trial size version of their toothpaste And the shower starter set comes with three trial size versions of their amber lavender body cleanser Citrus and Hawaiian ginger face cleanser and sage and black pepper shampoo After the starter set, the restocks will be regular sized products at their regular pricing So go try it out, it's DollarShaveClub.com slash Linus We're going to have that linked below So thanks for watching guys, if you disliked this video you can hit that button But if you liked it, hit like, get subscribed, or maybe consider checking out where to buy the stuff we featured At the link in the video description Actually, hold on, what was it? Uh, um, commercial grade quickcrete Uh, type MCS Uh, that's the one, we need to make sure we have that linked below Also linked in the video description is our merch store which has cool shirts like this one And our community forum which is totally worth a join