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and welcome to the WAN Show ladies and

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gentlemen we're a little bit late but um at least we got the video done right

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no no we didn't we didn't actually it was all for nothing really frustrated

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we are doing a thermoelectric cooled computer but

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instead of doing it kind of the um

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like the the janky way well to be clear it's still janky it's

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probably the jankiest thing we've ever made

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we recently did a video on peltier or tech cooling with the basic conclusion

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being that it's a giant boatload of suck we spent about three hundred dollars to

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get pretty much the same no actually worse

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performance worse than with a standard water cooling radiator and at the

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fantastic cost of a couple hundred watts

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of power consumption so we've taken all those learnings and we have crumpled

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them into a big ball and put them in a fire because today's video is all about

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taking peltier cooling and amping it up

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a notch pun intended this right here

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is a 545

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watt peltier thermoelectric cooling

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module so we are going to pump a whack ton of current through it we're gonna

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have a hot side we're gonna have a cold side and we are gonna have potentially a

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real good time or a real bad time

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either way it's a great video right speaking of great videos this great

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video is brought to you by our sponsor

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i fix it the ifixit marlin screwdriver set features five specialty precision

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screwdrivers and you can get yours at the link in the video description

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so i noticed that you designed a water block is there a reason that other than

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flexing the new workshop here that we didn't just use a standard water block

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and put it on top of the tech yeah so a water block like this even

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though it looks size wise like it's it should be a pretty good yeah cpus only

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on the die they really create a lot of heat so water blocks

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only really cool the center right so the actual fin structure of a

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typical CPU water block is only about this big so what happens then to our

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tech if we only cool the center of it

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it just won't be as efficient and it's going to get really hot around the edges

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so we had to design this fairly massive

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block like if you it's hard to get a sense of the scale when we're looking at

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it like this so how big is it the scale like these mounting holes right here

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yeah are the same but but the actual size we're actually going

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almost right to it so it's quite a bit larger yeah it's like

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about this big so we have a 65

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millimeter inner channel thing which is just a bit

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larger than the diameter of this so it should work pretty well

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unless it doesn't another reason we had to design our own block was that it

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needs to have some special functionality like okay it's great in theory to say you

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stick this on top to cool the hot side and then the CPU gets cooled by the cold

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side but what keeps this in place

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not just in place but clamped against

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the cooling element so that it gets optimal thermal transfer well that's

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where this type of sandwich design comes in so you can see we've got our cooling

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element here on the top and then you can actually see this very nice attention to

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detail by the way thank you i like this with the leads going in and everything

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you can see the peltier element is sandwiched in between then

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we've got these right here these bolt throughs are going to hold

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these pieces together really really tightly and bind them to this

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this cold plate at the bottom so

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for much the same reason as we can't just attach a tiny cooling element to

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the top of the hot side of the peltier and expect optimal efficiency we can't

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take the cold side of the peltier and put that against a tiny little CPU and

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hope that we're getting the most cooling out of it so we need to have something

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to spread the cooling and that's going to be another

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copper plate on the bottom that is also sandwiched around it

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yeah so another problem that we have is that if you just put this on full

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bore like if you just attach it to a power supply sure it's going to cool

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down really really fast and really cold yeah so we could end up

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with condensation um i mean really condensation yeah condensation lots of

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water around your CPU not a great time so that's why we have this guy right

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here it's a pid controller and do you

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know what pid is actually i don't know what it stands for um proportional

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integral and derivative okay so in a nutshell this is like an on

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off switch temperature goes in and it says yes that is okay or no that is not

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okay and if the temperature is okay then it

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ah sends a signal to this guy and says don't turn on the peltier and if the

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temperature is not okay it's too high it's higher than what we want then it'll

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say hey he'll kick on and this will turn on our block yeah so

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that's all well and good although it's a bit sketchy to just have

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all of that electronic stuff put on the table

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yeah so all that's going in this nice little box right here fun which you

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might have noticed this doesn't quite fit so we can either

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cut a hole in the top and have a big old fan or we can cut a slot and have it

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just sticking out the side i'm a fan of that one because it's easier

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okay sticking out the side cool you might be looking at this rather

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primitive block and thinking there's no way that's going to cool a 545w peltier

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so i'm going to prove it should be fine using solidworks flow simulation for the

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simulation we've got a 545 watt heat source some thermal paste and a fluid

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input with a flow rate of a d5 pump the only real assumption that i've made is

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that the water would reach a steady state temperature of about 42 degrees

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which seems reasonable enough given the huge radiator that we're using after

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running the simulation we can see that the flow does a reasonably good job of going through the fins and the water

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resistant temperature by about two degrees while making its way from one side to the other the temperature of the

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peltier rises quickly at first but it hits steady state at around 54 degrees

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after a minute or two which seems slightly low to me but basically

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confirms that if we have a problem it's probably not due to bad cooling

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oh man it's gonna be like the most full send video we've done in a while

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but it's done right it's like done but not to like where i

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normally would get it before a video are you sure

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yeah so we have the bottom bit this also known as the base yes the base yep CPU

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contacts the bottom here yep peltier it's pretty flat

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yeah i actually laughed the stuff oh okay well that explains it so

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yeah peltier it goes on there uh which way not sure we need to turn it on to find

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that out and there's okay there's a little trace that's in there that's

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where our thermal couple goes okay neat there we go we've got the

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all soft bit yep also left all the surfaces were left

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in this okay and then yeah this goes on there and

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we're good to go all right so why don't we get this mess assembled and see where

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we go from there yeah we basically have two tasks to do

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here okay one we need to make a water cooling loop

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and maybe equip this motherboard for

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sub-zero depending on how we're feeling

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and the other thing is this sketchy box

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here needs to be turned into

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a sketchy box that works so everything that needs to be here is

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there but none of it is soldered none of it's soldered yeah

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so they get to watch us solder and cringe again

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yeah they're going to be really happy about that so this right here is our solid state relay it's going to just

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turn our tech on and off based on how cold it is and

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if it's going to cause condensation and crap pretty much all that's going into

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there we have these two power supply leads that

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are just cable mod cable extensions

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goes in there goes the solid state relay and then

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out through this port here to the peltier and

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should be good okay so i've got a bit of an update for y'all uh first of all here

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is our wait uh update number two

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is this is the radiator alex was talking about

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so this actually had a dedicated video on the channel like

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five years ago or something like that but it's the phobia g changer

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1080. basically it's three triple 120 mil rads

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glued together to make for a nine by one twenty

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millimeter radiator so we're gonna we're gonna pop that

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like it's hot and uh

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it's gonna cool things down good news everyone oh what's up

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i found the perfect fans to use for our radiator here

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oh no these are actually the ones uh

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from whole room water cooling from the last

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setup that we did that was this ridiculous and

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uh all of the someone who disassembled it just left all of the screws like in

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the fans so i don't even have to go find radiator screws i just

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put these in

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just wrapping up the radiator here

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and that's it however many friggin watts of cooling that

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is these are dirty in like a really

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unsettling way like it's caked okay so

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if i said i was five minutes from water loop completion how close are we

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so everything in here is wired up except

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that we need to do the painful bit these two guys right here need to get the

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choppy chop and then what they get soldered together go to here and up

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there and we're good to go oh i see it okay yeah what else do we need to do uh

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besides that these two holes right here need to be

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tapped the rest are all tapped oh my favorite yeah all right i guess i'm

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gonna thread this thing wait we have a proper tap now don't we

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do we have a beautiful handle yes whoa

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yeah look at that thing look at this wow it's almost like it was

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made to do this i've never been this excited to have

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leverage

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it only needs to be straight enough

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oh okay well this is not going well

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um so you won't be able to see it very well but basically i'm checking if the o-ring

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is squeezed against the plexi there

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and it looks like they are squeezed all the way around all right i think i got

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him this box right here might be the

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sketchiest thing i've ever done

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like look at this it's just

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it's a bit of a mess it's a bit of a mess and we're putting

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like there's ac power in here we've got

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what's going to be nearly like 600 watts going through

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freaking lever nuts are we going to start a fire

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um it's all within the rating okay these are

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32 amps rated at that and we're expecting 32

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amps so

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so where do i connect this to

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um so we need to put some wires onto here yep

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and then those i was thinking maybe just lever not them to those

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so we can disconnect it if we want got it

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yeah soon

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very soon okay this is probably the cold side so

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we're gonna gamble and i'm just gonna start assembling it

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all right uh all right here comes all the thermal

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goop this is disgusting

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this stuff is nasty wait

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cold side heat absorb oh crap i put it in the upside down

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oh no oh come on

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how could i do that we're gonna have to give up and start rancho at some point

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here though yeah so what was that about not wanting to do

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this project the sketchy way because i seem to recall you saying

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something about that oh i just remember like

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at the start i had so many aspirations so this would not be totally sketchy i

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want to see this thing fire up yeah same

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and i'm at the point where even if it is literal fire i will settle for it okay

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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

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the peltier which is sandwiched in there and then here is where the cold side

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cools our CPU um alex i can just put this on now right

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yep and you're good to uh do your soldering

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on the leads for the tech just like on here right um yeah sure good because

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that's what you're doing okay this is not an amazing mounting mechanism

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but i happen to have some screws that are almost exactly the right length

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so we are going for a hard mount that is gnarly

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the good news is you're going to get all that mounting pressure you wanted

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yep the bad news is we might crack this piece of acrylic

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all right well i'm going to plug this in here

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if i have to blast a titan rtx i'm going to be so pissed off

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all right so this power supply i'm going to turn it

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on nothing died yet that's a good sign so now i'm gonna put this on and

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if bad things happen i'll just flick the switch and turn it back off so three two

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one the fan didn't turn on should it have

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hmm

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imagine something being potentially miswired in there

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all right we should probably go to windshield yep

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okay so heat we don't want that we want

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cool yay we did it so i can put this down

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yep okay all right so

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this right here is set right now it's just to 20 degrees okay but

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that seems fine the solid state relay actually is working

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like how do you know because this right here has a sketchy

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connection yeah so if you pull it out

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and you hear a click and when you put it in you can hear it go cool coming in hot

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what the hell well i couldn't find a big jug so i that

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was such a good opportunity to like plug the merch you have i have the merch too

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i just need more you have the water bottle yeah i know but that also has my

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ice water in it i was drinking that so water

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um we could have used like three all right let's fill this thing

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okay well there's one mug down

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all right now the game is on

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oh it's not leaking so that's good so is there water running through that loop

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yep oh you can also see that the bubbles are coming in here

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and they're going not just through the middle but also all the way around too

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okay fantastic so the block design is working as

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intended oh my god what is going on here

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so that means the radiator is full which is good uh

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oh ball sacks my

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well it's a good thing those fans were dead

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the tech is so close to working yeah yeah are you sure

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not 100 because you've said it a couple times now i am slightly more confident

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this time that's nice if only confidence was what

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it took to make something work then the uh hindenburg probably wouldn't

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have been quite such a disaster what how is that related at all well they

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were confident it was going to work i better they wouldn't have put a bunch of people in it yeah it worked really well

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for quite a while

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so we didn't run into this when we were using just a small peltier but it

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occurred to us that with so much power we might be running into over current

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protection limits on the pci express connector so

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i thought well why don't we use the eight pin eps connector which is the CPU

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power connector instead and see if we can overcome the problem that way and

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what's really convenient is that this is not by design and you shouldn't ever do

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this if you can avoid it but fun fact you can jam an eps mail connector

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into a pci express um female receptacle and all the pins

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will make contact it's just really like it's kind of a bit to get it back out so

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all we have to do is redo the the wiring here into your adapter so it's actually

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a pretty it's almost a plug-and-play solution

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plug-in prey more like it all right good luck everybody

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oh oh temperatures dropping temperatures dropping very fast really we're at 20

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degrees 19 don't touch that

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we're at 16 degrees yeah that's definitely working okay

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whoa so we're ready to rock yes should we see if our relay works because

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maybe the relay wasn't the problem before well if we want to just jam the

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other ones into this then the other power supply might work wait oh right

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the relay is a good right yeah we want the relay yeah okay

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okay oh man i told you this is hard to take

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out so theoretically this turns on yeah

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drops to 15 degrees and then the relay

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stops it really okay all right it's on

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okay the temperature's dropping real fast now so we just went past

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15 degrees oh yep and the thing the thing hit turned off

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oh this definitely needs some tuning though oh yeah so just auto-tune if you hold

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that just do make your computer videos

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that was not necessary achieve this

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okay and so the relay doesn't work alex

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i'm not totally sure did you just have it configured wrong

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does our oh does this thing read negative temperatures it seems like no

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oh come on that's great so because the

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relay now serves absolutely no purpose we don't have to deal with its uh

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limitation when it comes to reading negative temperature values

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check it out the old yellow and gray multi-logger

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thermometer makes an appearance it's back from the dead baby

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okay so CPU temps are dropping

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dropping we're at 15 11.

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we're three on the tech so we need to hit this thing with a load

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because we at idle like this is such

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cooling overkill that it is ridiculous like we can't we

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can't keep turning it on and off like this all the time uh so which one

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classroom i'm gonna maybe bmw what's the speed at right now uh

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okay it looks stuck yeah okay so bmw CPU

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here we go okay

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here we go CPU temps are up in the 50s 60s 70s get that tech turned on baby oh

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00:20:06,400 --> 00:20:13,760
yeah it's on did we overwhelm it already oh yeah it's just 34 35

284
00:20:11,600 --> 00:20:16,799
we're at like 85 degrees come on

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there's no way that we did all of this for it to just crap out like that

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oh we're throttling we're throttling

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we throttled son we overwhelmed the tech okay hold on a

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second let's stop the stop the blender stop the

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fire wait hold on stop escape yeah now it's dropping like

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from 40 it's dropping fast alex insisted we get our hands on a

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variable voltage power supply so here's a 15 to 24 volt power supply let's fire

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this thing up and you need to be more excited we're doing it we're testing it it's

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going to work it's going to be great

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i don't actually believe what i just said okay testing oh it's going up

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00:20:57,120 --> 00:21:02,640
it's going up fast but i can turn up the voltage now

296
00:21:00,480 --> 00:21:08,159
right we're at 330 watts now 380 watts how

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how's your temperatures there we're at 22 volts

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00:21:09,679 --> 00:21:14,400
we're at 373 watts it's going up fast there i actually

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didn't bother okay i'm just going to stop this test hold on we're at 24 volts

300
00:21:18,360 --> 00:21:23,919
744 watts i would probably keep the test on we are dropping temperature quickly

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here we are at 22 we are 21. we're at 20

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degrees 19 degrees that's the heat on the block

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00:21:30,640 --> 00:21:36,559
here whoa that copper is hot

304
00:21:34,240 --> 00:21:42,640
okay the pump's running right no yeah the pump's running holy crap

305
00:21:40,400 --> 00:21:46,159
all right we're at 900 watts on this thing all right

306
00:21:44,480 --> 00:21:51,360
we're already up to 90 degrees on the CPU so

307
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if we're doing 90 watts on the telp 900

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we're doing 900 watts oh yeah we're at 105 degrees that copper's hot something

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00:21:55,760 --> 00:21:59,919
smells like burning we got to turn this off

310
00:21:58,880 --> 00:22:03,840
okay if we're drawing like 900 watts and it

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still is thermal throttling there's no way techs are ever going to cool at 7

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900. i told you yeah

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so in a nutshell um

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tech cooling is and was a bad idea

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and everything that i told you in your first week here

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00:22:21,679 --> 00:22:27,919
was true yeah it's a bad idea and nobody

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00:22:24,720 --> 00:22:30,159
should do it because even with a super

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00:22:27,919 --> 00:22:32,960
high powered tech the

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power inefficiency the fact that you need so much more

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00:22:35,039 --> 00:22:40,799
cooling capacity because you have to cool the CPU

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and all the waste heat off of your tech the complexity of the setup and the

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00:22:42,880 --> 00:22:47,760
relays and crap that you need to set up in order to avoid condensation

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and the fact that you are still going to be

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limited to like high-end consumer processors at best

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00:22:54,640 --> 00:23:00,880
that you can actually effectively cool with attack all these limitations oh

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00:22:58,000 --> 00:23:05,280
yeah cost need i go on mean that tech cooling is a pretty bad time

327
00:23:03,919 --> 00:23:09,200
there's no way we can just finish like this do you need a beautiful website

328
00:23:07,039 --> 00:23:12,799
without all the hassle well squarespace has got you covered they're all in one

329
00:23:10,720 --> 00:23:16,080
platform makes it easy to get up and running quickly they have award-winning

330
00:23:14,640 --> 00:23:19,360
templates that you can use as a starting point for a wide range of projects if

331
00:23:18,240 --> 00:23:23,520
you ever need additional help squarespace offers webinars a full

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00:23:21,360 --> 00:23:27,600
series of help guides or you can contact their 24 7 support via live chat and

333
00:23:25,840 --> 00:23:31,200
email if you already have a third party domain you don't have to give it up just

334
00:23:29,120 --> 00:23:34,960
transfer it over to squarespace and squarespace includes e-commerce features

335
00:23:33,360 --> 00:23:38,559
to help you sell merge or services online maybe we can get rid of this

336
00:23:36,720 --> 00:23:44,240
stupid tech module and be done with it so head over to squarespace.com forward

337
00:23:40,480 --> 00:23:45,760
slash LTT to get 10 off your first order

338
00:23:44,240 --> 00:23:50,720
so thanks for watching guys sorry this was such a disappointment to you and alex alike wow we just totally didn't

339
00:23:49,200 --> 00:23:55,039
even have to build this relay box to just find out it wasn't gonna work

340
00:23:52,880 --> 00:23:58,880
yeah it's a lot of work hey but it was a learning experience yeah about listening

341
00:23:57,760 --> 00:24:03,280
to your boss next time

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00:24:00,880 --> 00:24:03,280
what