 And Welcome to the WAN show ladies and gentlemen, we're a little bit late, but At least we got the video done, right? No, no, we didn't we didn't actually it was all for nothing really frustrated we are doing a thermoelectric cooled computer, but instead of doing it kind of the Like the the janky way Well to be clear it's still janky. It's probably the jankiest thing we've ever made We recently did a video on Pelche or tech cooling with the basic conclusion being that it's a giant boatload of suck we spent about $300 to get pretty much the same not actually worse performance than with a standard water cooling radiator and at the Fantastic cost of a couple hundred watts of power consumption So we've taken all those learnings and we have crumpled them into a big ball and put them in a fire Because today's video is all about taking pelche cooling and amping it up a notch Pun intended this right here is a 545 watt Pelche thermoelectric cooling module so we are gonna pump a Wackton of current through it. We're gonna have a hot side. We're gonna have a cold side and we are gonna have potentially a real good time Or a real bad time Either way, it's a great video, right? Speaking of great videos this great video is brought to you by our sponsor I fix it the I fix it Marlin screwdriver set features five specialty precision Screwdrivers and you can get yours at the link in the video description So I noticed that you designed a water block Is there a reason that other than flexing the new workshop here that we didn't just use a standard water block and Put it on top of the tech Yeah, so a water block like this even though it looks size-wise like it's should be a pretty good. Yeah CPUs only on the die. They really create a lot of heat. So water blocks Only really cool the center Right. So the actual fin structure of a typical CPU water block is only about this big So what happens then to our tech if we only cool the center of it? It just won't be as efficient and it's gonna get really hot around the edges God, so we had to design this fairly massive Block like if you it's hard to get a sense of the scale when we're looking at it like this So how big is it the scale like these mounting holes right here? Yeah the same but but the actual side We're actually going almost right to it. So it's quite a bit larger. Yeah, it's like about this big So we have a 65 millimeter Inner channel thing which is just a bit larger than the diameter of this. So it should work pretty well Unless it doesn't another reason we had to design our own block was that it needs to have some special functionality like Okay, it's great in theory to say you stick this on top to cool the hot side and then the CPU gets cooled by the cold side, but What keeps this in place not just in place but clamped? Against the cooling element so that it gets optimal thermal transfer Well, that's where this type of sandwich design comes in So you can see we've got our cooling element here on the top and then you can actually see this very nice attention to detail By the way, I like this with the leads going in everything you can see the peltier element is sandwiched in between Then we've got these right here. These bull throughs are going to hold these pieces together really really tightly and And bind them to this this cold plate at the bottom So for much the same reason as we can't just attach a tiny cooling element to the top of the hot side of the peltier And expect optimal efficiency We can't take the cold side of the peltier and put that against a tiny little CPU and hope that we're getting the most cooling out of it. So we need to have something to spread the Cooling and that's going to be another copper plate on the bottom that is also sandwiched around it Yeah, so another problem that we have is that if you just put this on full bore Like if you just attach it to a power supply sure it's gonna cool down really really fast And really cold. Yeah, so we could end up with condensation. I mean really condensation Yeah condensation lots of water around your CPU. Not a great time So that's why we have this guy right here. It's a PID controller and do you know what PID is? Actually, I don't know what it stands for proportional integral and derivative Okay, so in a nutshell this is like an on-off switch temperature goes in and it says yes, that is okay or no that is not okay and if the temperature is okay, then it Sends a signal to this guy and says don't turn on the pelce and if the temperature is not okay It's too high. It's higher than what we want and I'll say hey pelce kick on and this will turn on our block Yeah, so that's all well and good. Although it's a bit sketchy to just have all of that electronic stuff put on the table Mm-hmm. Yeah, so all that's going in this nice little box right here fun, which you might have noticed This doesn't quite fit so we can either cut a hole in the middle Or we can either cut a hole in the top and have a big old fan or we can cut a slot and have it just Sticking out the side. I'm a fan of that one because it's easier. Hmm. Okay sticking out the side cool You might be looking at this rather primitive block and thinking there's no way that's going to cool a 545 watt Peltier So I'm going to prove it should be fine using SolidWorks flow simulation for the simulation We've got a 545 watt heat source some thermal paste and a fluid input with the flow rate of a d5 pump The flow rate is that the water would reach a steady state temperature of about 42 degrees Which seems reasonable enough given the huge radiator that we're using after running the simulation We can see that the flow does a reasonably good job of going through the fins and the water races in temperature by about Two degrees while making its way from one side to the other The temperature of the Peltier rises quickly at first but it hits steady state at around 54 degrees after a minute or two Which seems slightly low to me, but basically confirms that if we have a problem is probably not due to bad cooling. Oh Man, it's gonna be like the most full send video we've done in a while, but it's done, right? It's like done but not to like where I normally would get it before a video. Are you sure? Yeah, so we have the bottom bit this also known as the base. Yes the base Yeah, CPU contacts the bottom here. Yeah Peltier. It's pretty flat. Yeah, I actually lapped the stuff. Oh, okay. Well that explains it So yeah Peltier it goes on there. Which way? Not sure we need to turn it on to find that out and there's okay. There's a little trace that's in there That's where our thermal couple goes. Okay, neat. Yeah, there we go. We've got the also that bit Yep, also lapped all the surfaces were lapped in this. Okay, and And then yeah, this goes on there and we're good to go. All right So why don't we get this mess assembled and see where we go from there? Yeah, we basically have two tasks to do here. Okay one we need to make a water cooling loop and Maybe equip this motherboard for sub-zero depending on how we're feeling and The other thing is this sketchy box Yeah here needs to be turned into a a sketchy box that works so everything that needs to be here is there but None of it is on none of it's soldered. Yeah, so they get to watch us solder and cringe again Yeah, they're gonna be really happy about that. So this right here is our solid state relay It's gonna just turn our tech on and off based on how cold it is and if it's gonna cause condensation and crap Pretty much all it's going into there. We have these two power supply leads that are just cable mod cable extensions goes in there goes to the solid state relay and then out through this port here to the Peltier and Should be good. Okay, so I've got a bit an update for y'all. First of all, here is our wait update number two is This is the radiator Alex was talking about. So this actually had a dedicated video on the channel like Five years ago or something like that, but it's the phobia G changer 1080 Basically, it's three triple 120 mil rads Glued together to make for a 9 by 120 millimeter radiator. So we're gonna we're gonna pop that like it's hot and It's gonna cool things down Good news everyone. Oh, what's up? I found the perfect fans to use for our radiator here Oh These are actually the ones from whole room water cooling from the last Setup that we did that was this ridiculous and All of these someone who disassembled it just left all of the screws like in the fans So I don't even have to go find radiator screws I just put these in Okay, just wrapping up the radiator here And that's it however many friggin watts of cooling that is These are dirty in like a really Unsettling way. Okay caked. Okay. So if I said I was five minutes from water loop completion, how close are we? so Everything in here is wired up Except that we need to do the painful bit these two guys right here need to get the chop chop And then what they get soldered together go to here and there and we're good to go. Oh, I see. Okay Yeah, what else do we need to do? besides that These two holes right here need to be tapped. The rest are all tapped. Oh my favorite. Yeah. All right I guess I'm gonna thread this thing. Wait, we have a proper tap now, don't we do we have a beautiful handle? Yes Wow. Yeah, look at that thing. Look at this Wow, it's almost like it was made to do this. I've never been this excited to have leverage It only needs to be straight enough Oh, okay. Well, this is not going well So you won't be able to see it very well, but basically I'm checking if the O-ring is squeezed against the plexi there And it looks like they are squeezed all the way around. All right, I think I got him This box right here might be the sketchiest thing I've ever done Like look at this It's just It's a bit of a mess It's a bit of a mess and we're putting like there's AC power in here We've got what's going to be nearly like 600 watts going through freaking lever nuts Are we gonna start a fire? It's all within the rating. Okay. These are 32 amps Rated at that and we're expecting 32 amps. So So Where do I connect this to Where do I connect this to? So we need to put some wires on to here Yep And then those I was thinking maybe just lever nut them to those so we can disconnect it if we want. Got it Yeah soon Very soon. Okay, this is probably the cold side. So we're gonna gamble and I'm just gonna start assembling it All right All right, here comes all the thermal goop this is disgusting This stuff is nasty. Wait Cold side heat absorb. Oh crap. I put it in the upside down. Oh No, oh come on How could I do that we're gonna have to give up and start when I'm sure at some point here though, yeah So what was that about not wanting to do this project the sketchy way? Because I seem to recall you saying something about that. Oh, I just remember like At the start I had so many aspirations so this would not be totally sketchy. I want to see this thing fire up Yeah, same And I'm at the point where even if it is literal fire I will settle for it. Okay So before I put this on I should show you guys the finished assembly So here's where our water cools the hot side of the pelche which is sandwiched in there And then here is where the cold side cools our CPU Alex I can just put this on now, right? Yep, and you're good to do your soldering on the leads for the tech Just like on here, right? Yeah. Sure good cuz that's what you're doing. Okay. This is not an amazing mounting mechanism But I happen to have some screws that are almost exactly the right length. So we are going for a hard mount That is gnarly. The good news is you're gonna get all that mounting pressure you wanted. Yep The bad news is we might crack this piece of acrylic. All right. Well, I'm gonna plug this in here If I have to blast a Titan RTX, I'm gonna be so pissed off. All right, so This power supply I'm going to turn it on nothing died yet. That's a good sign So now I'm gonna put this on and if bad things happen, I'll just flick the switch and turn it back off So three two one The fan didn't turn on should it have? hmm I imagine something being potentially miswired in there. All right, we should probably go to Wancho. Yep Okay, so heat we don't want that we want cool Yay We did it so I can put this down. Yep Alright, so This right here is set right now. It's just a 20 degrees. Mm-hmm. Okay, but that seems fine the the salt state relay actually is working like how do you know because This right here has a sketchy connection. Yeah, so if you pull it out, oh Here click and when you put it in You can hear it go cool coming in hot What the hell? Well, I couldn't find a big jug. So that was such a good opportunity to like plug the merch you have I have the merch too. I just need more you have the water bottle. Yeah, I know but that also has my ice water in it I was drinking that so We could have used like three, all right, let's fill this thing Okay, well there's one mud down. All right now the game is on Oh, it's not leaking so that's good So is there water running through that loop? Yeah Oh, you can also see that the bubbles are coming in here and they're going not just through the middle But also all the way around too Okay Fantastic. So the block design is working as intended. Oh my god. What is going on? So that means the radiator is full which is good. Oh Ball sacks my Well, it's a good thing those fans were dead The tech is so close to working. Yeah. Yeah, are you sure? Not a hundred percent as you said it a couple times now. I am slightly more confident this time. Hmm That's nice. If only confidence was what it took to make something work But then the Hindenburg probably wouldn't have been quite such a disaster. What? How is that related at all? Well, they were confident it was gonna work. I better they wouldn't have put a bunch of people in it Yeah, it worked really well for quite a while So we didn't run into this when we were using just a small pelce But it occurred to us that with so much power we might be running into over current protection limits on the PCI Express connector So I thought well, why don't we use the 8-pin EPS connector? Which is the CPU power connector instead and see if we can overcome the problem that way and what's really convenient Is that this is not by design and you shouldn't ever do this if you can avoid it But fun fact you can jam an EPS male connector into a PCI Express Female receptacle and all the pins will make contact It's just really like it's kind of a bit to get it back out So all we have to do is redo the the wiring here to your adapter. So it's actually a pretty it's almost a plug-and-play solution Plug-and-pray more like it All right. Good luck everybody. Oh Oh temperatures dropping temperatures dropping very fast really over at 20 degrees 19. Don't touch that Or at 16 degrees. Yeah, that's definitely working. Okay Oh, so we're ready to rock. Yes. Should we see if our relay works? Because maybe the relay wasn't the problem before well if we want to just jam the other ones into this than the other power Supply might work. Wait. Oh, right. The relay is a good right? Yeah, we want the relay to work. Okay, okay Oh, man, I told you this is hard to take out So theoretically this turns on yeah Drops to 15 degrees and then the relay and then stops it really. Okay All right, it's on. Okay. The temperatures dropping real fast now So we just went past 15 degrees. Oh, yep, and the thing the thing hit turned off Oh This definitely needs some tuning now. Oh, yeah, so just auto-tune if you hold that Auto-tune Making computer videos That was not necessary Not necessary Cheebus Okay, and so the relay doesn't work Alex I'm not totally sure you just have it configured wrong Does our oh does this thing read negative temperatures seems like no Come on It's great. So because the relay now serves absolutely no purpose. We don't have to deal with its limitation when it comes to reading negative temperature values check it out the old yellow and gray Multi logger thermometer makes an appearance. It's back from the dead, baby Okay, so CPU temps are dropping Dropping we're at 15 11 We're three on the tack So we need to hit this thing with a load because we at idle like this is such cooling overkill That it is ridiculous. Like we can't we can't keep turning it on and off like this all the time So which one classroom? I'm gonna maybe BMW. What's the speed at right now? Okay, look stock. Yeah. Okay. So BMW CPU here we go Okay Here we go. CPU temps are up in the 50s 60s 70s get that tech turned on baby Oh, yeah, it's on did we overwhelm it already? Oh, yeah, it's just 34 35. We're at like 85 degrees. Come on There's no way that we did all of this for to just crap out like that. Oh, we're throttling we're throttling We throttled son We overwhelmed the tech. Okay. Hold on a second. Let's stop the stop the blender. Stop the fire. Wait, hold on Stop escape. Yeah, now it's dropping like from 40. It's dropping fast Alex insisted we get our hands on a variable voltage power supply So here's a 15 to 24 volt power supply. Let's fire this thing up and you need to be more excited We're doing it. We're testing it. It's gonna work. It's gonna be great I don't actually believe what I just said. Okay testing. Oh, it's going up It's going up fast but I can turn up the voltage now We're at 330 watts now 380 watts. How's your temperatures there? We're at 22 volts We're at 373 watts. How we doing? It's going up fast there. I actually didn't bother Okay, i'm just gonna stop this test. I'm gonna crank. Hold on. We're at 24 volts 744 watts. I would probably keep the test on we are dropping temperature quickly here. We are at 22. We are 20 watts We're at 20 watts. We're at 20 watts We're dropping temperature quickly here. We are at 22. We are 21. We're at 20 degrees 19 degrees How's the heat on the block here? Whoa, that copper is hot Okay, the pump's running right? Yeah, the pump's running. Holy crap All right, we're at 900 watts on this thing. All right We're already up to 90 degrees on the cpu. So If we're doing 90 watts on the tilt or 900 we're doing 900 watts. Oh, yeah, we're at 105 degrees That copper's getting hot. Something smells like burning. We got to turn this off Okay, if we're drawing like 900 watts and it still is thermal throttling, there's no way techs are ever going to cool at 7900 I told you. Yep So in a nutshell Tech cooling is and was a bad idea And everything that I told you in your first week here Was true. Yeah, it's a bad idea and nobody should do it because even with a super high-powered tech the power inefficiency The fact that you need so much more cooling capacity because you have to cool the cpu And all the waste heat off of your tech The complexity of the setup and the relays and crap that you need to set up in order to avoid condensation and the fact that you are still going to be limited to like High-end consumer processors at best that you can actually effectively cool with the tech all these limitations. Oh, yeah cost need I go on? Mean that tech cooling is a pretty bad time There's no way we can just finish like this Do you need a beautiful website without all the hassle? 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Yeah about listening to your boss next time What?