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we were thinking you know it would be so cool if we tried to overclock at the

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North Pole but the North Pole is very cold very far away but what isn't is our

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environmental test chamber with the ability to go all the way from 180° cus

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to -40 we can test everything from your

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Nan's cookie recipe to a computer at the North Pole so let's see just how fast a

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PC can go at -40° and uh if it can even

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survive Sur what will survive is this segue to our sponsor build Redux are you

8
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9
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the rest with competitive pricing compared to building a PC yourself build

10
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Redux will have your dream rig shipped to your door ready to do all kinds of

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computery things so check them out at the link down below before we can take

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the chamber down to -40° and Chuck a PC

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in it we first need to heat it up see here's the thing at -40 condensation is

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going to be a really big problem and although in the near future we're going

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to have humidity control in our environmental chamber we don't yet have

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the air compressor that's required for us to do that so instead what we can do

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is just heat the chamber up to remove all the moisture from the air and then

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cool it down now since we needed to have the chamber heated up anyway we were

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curious what would the performance of a PC look like if you were to take it out

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of a comfortable room temperature woo oh

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that's spicy fast fast fast put it oh sorry sorry I'm putting it in I'm

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putting it in and put it at an insane

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49.4 de C the alltime Canadian record

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for highest temperature recorded in Linton 2 years ago let's get this thing

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hooked up I did not Orient it correctly so yeah we also need cables and stuff

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it's a whole thing okay let's do it I mean that'll probably do right we can

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just take the squid over there we got this we also need to go we can't just go

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straight in we need to go over the this down do a loop and then in the reason

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for that is that not now but later we

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have a lot of potential for condensation to form around here and potentially drip

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down our cables and we don't want it to get onto anything that matters we want

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it to just drip down here or on the floor this bucket okay so this poor

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computer is running at 50° right now oh

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shut up there's a whole like web interface for it that I mean that makes

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sense but yeah so you can fully control from here program in routines and stuff

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and also see like oh we open the door there and we open the door there wow it

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actually loses less temperature than I would have thought yeah it wasn't too

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bad our poor CPU is sitting at

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75° right now doing nothing and what's

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really wild is that these temperatures aren't even unrealistic if you lived in

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one of the hottest regions in India for example you could see temperatures close

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to this on a fairly regular basis in the in the summer what what's our what's our

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planned load like should I just cin bench it real quick instant thermal

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throttle and our poor CPU is running at

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a mere 4.14 4.13 I mean it's well above base

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clock which is kind of impressive oh

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it's it did a burning test okay okay let's see we're at 4.02

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3.99 man what's everything else looking like surprisingly the motherboard vrms

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are still very reasonable good job Gigabyte I guess GPU idling at 52 which

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is impressive when it's sitting in a 50.6 de C chamber wow it dipped as low

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as 3.94 3.93 that explains why the motherboard

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vrms aren't getting hot oh yeah there's no power they're not pushing any power

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through them now that we've heated up our CPU let's get an actual score for

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reference I would expect 36,000 on a computer like this we are

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not getting 36,000 sir I will eat my

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sandal if we get 36,000 33,000 points but how will NVIDIA

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Faire fer Mark you want to do fur Mark in f mark oh my God uh I want to run

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like 2560 X 1440 that's pretty good for stress test Forex antus sing

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go now what we're looking at on an NVIDIA GPU is not the temperature

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because it's not going to go over 80 85°

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they're hard limited what we're looking at is the effective clock speed because

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they will just Throttle Down their performance to match whatever they can

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do within that thermal Target it's doing pretty well it's doing pretty well so

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far the one time that 4090 cooler is needed that fan is running at 90% though

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we can't hear it over all the sound around us but that thing must be

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freaking ripping okay I want to know can can I

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crack it yeah go can I crack it just to hear it okay come on come on

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W she's going it's hard to tell but

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she's definitely going it's not in real time so it might take a minute or two to

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show up but yeah we we lost a bit here

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wow Alex our fan speed isn't even 100%

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this thing is handling it this is how we

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had a whole plan for this video where we were going to show like dog slow

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performance at 50° on the GPU and then we were going to ramp it down to like

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you know the average Arctic temperature in Canada -40 and show how it's like

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yeah lot it's doing it what the heck

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okay these coolers are so

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overpacked hold on a second

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4090 specs Founders okay this isn't a

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Founders card this is um looks like yeah it's an ASUS stricks card but

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realistically they're all going to have fairly similar environmental condition

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ratings I cannot find any reference to a

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safe environmental operating temperature for the RTX 4090 I guess we're off the

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rails for the rest of this video all right I want to take this down

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to minus 40 it does kind of make sense that it can do this cuz if you think

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about like a computer case you might expect it to be in 35° you're pumping

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450 watts into it for a while if the air flow isn't too great inside of the case

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it might be getting to 50 very well be 51 degre over ambient but good freaking

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job ASUS jeez flipping gears then modern

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CPUs particularly from Intel don't even operate at Peak efficiency at room

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temperature so we are expecting ah yes a

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very very different outcome almost

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immediately we dropped from 200 Watts down to 190 and the lower that power

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consumption is the less of our total potential performance that we're getting

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it's already dropped a full gigahertz of clock speed that is one millions of

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clock speed oh wow yeah this is still dropping we can give it a tiny bit

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longer sure now you said that until we have our compressed air setup here we

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are not going to be able to control humidity I mean obviously for wetting

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the air we've got this water tank so I guess the compressed air plays a role in

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drying the air yeah the compressed air goes into these desant chummies right

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here okay are there you get dry air out all good I see so it'll basically to go

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oh no it needs to be wetter so it needs to be drier and that's pretty much it

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but you need quite a bit of pressure and a lot of CFM to blast all the air

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through so we need a big air compressor got it this seems to be settled in we

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went from an average clock speed of 4.7 GHz all the way down to

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3.55 and our power is down from over 200

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watts to just 10060 now it's time to pull our

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temperature down to the average Arctic temperature in the winter here in Canada

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okay I hear her doing something hey buddy you okay in there now there's a

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lot of leakage so that's probably just

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the air blowing past the compressor

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oh okay which we can look at oh also in

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the time that it took you to go from over there to here we dropped

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10° really I thought you said it was

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going to take half an hour to pull down I guess it gets harder to pull down once

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the environmental temperature is higher than what it's trying to do yeah look

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just wow wow there goes another one they're

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biting the dust and another one got yeah sorry okay

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woo holy shnikes I underestimated the size of

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that compressor wait is this a two-stage

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system it looks like it but no it's not

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we thought we had two stages of phase change cooling one to cool down the

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chamber and one to cool down that stage but what we're actually looking at here

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is a gigantic 3 and 1/2 horsepower scroll compressor and then a couple of

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accumulator tanks that seem to play a role in drying the refrigerant so

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removing any moisture which can't be compressed and also filtering it so that

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it can operate as efficiently as possible shout out Jake Dan for helping

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us read the schematics is our CPU seriously still at 100° on an OCT to

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hd15 it's actually really confusing

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because around like 15° C it was doing

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pretty good and now the clock speeds are

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dropping and so is the wattage so I wonder if like our thermal paste has

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frozen oh it's been at 100° the whole time we might have just Frozen our heat

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pipes uh wait did it just crash welcome

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back the land of the living the gpus at

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16° on the memory I really want to check it for condensation but I don't really

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want to open up the door and add in a bunch of condensation see this warm air

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when it touches the cold stuff will

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immediately have the moisture drawn out of it where it will collect on the cold

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stuff do we continue with this computer no I think it's time for us to

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take it to another level this is where things get really spicy because remember

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that part we mentioned about how when we open it up the warm air condensation Etc

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we need to find a way to to swap components on this bench without

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destroying it we're going to have to be really fast okay and once it's running

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through maybe it'll be fine if it's just

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sitting in there it's going to freeze

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right I'm so sorry deep cool thank you for sending us your all-in-one liquid

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cooler I don't know I we just going to wing it let's just open it up and see

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what happens we're just going to wing it h okay

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currently - 35 freaking cold okay this

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is bad it is condensing already Alex

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this is very bad yes all right that's off also is the

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computer on right now why is the computer on oh my God it's frosting over

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it's frosting over already Alex turn the computer off close the door a bit let's

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get yeah more more more oh my God it's

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really bad sorry Andrew you got to oh my God this is so cold we're just going to

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get get the hardware after oh this is bad you got to close it more close it

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more shoot me through the window just I'm in here I'm in here it's

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fine okay I need the back

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plate oh my goodness this she's Frosty

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Alex I can tell where's the other where's the old

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back plate oh fell off okay okay you got

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it I have the old back plate there there's the new one yep oh

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my God that's cold oh crap this is bad very bad oh it's so cold okay so just a

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second okay I need to hold this back plate on I think yeah there it goes okay

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good work here we go oh my gosh oh sorry I just LEL you in

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the head yes oh sorry that's fine okay

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is it theoretically ready to power up okay we got to close it Alex you can't

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organize part wear in a little tray have you gone mad sir uh so the

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power button's in there oh B oh God it's

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at 92% humidity Alex why did we change the cooler

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mid I'm just here to hold the door for you um it's content don't blow up my

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chamber please what we should have done was brought it back up to room

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temperature then pulled it down again it does appear that lonus was right and

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there is no more Frost all over our computer our aiio might be

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frozen but it should be fine you may remember this computer from our direct

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die cooling video recently well it still

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got the same direct D water block on it but instead of using an industrial

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Chiller to pump fluid through the loop we're going to be running this inside

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our air Chiller uh yeah I was wondering about that so instead of using Straight

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water we are apparently wait is this windshield decer or is this an ah

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perfect I expect some problems problem number the first this doesn't seem like

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a lot of glycol problem number the second glycol when it reaches certain

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temperatures gets quite V viscous and this is just a PC cooling pump this is

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not your car's cooling pump have we crossed the line from fun to stupid no

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what would be stupid is if we didn't use this tray because if the water from our

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computer gets onto that and they Common Ground we blow up both of them don't

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worry everything's fine I didn't think it wasn't but now I'm concerned no

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they're fine I'm now everything's fine I'm

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leaving in 5 minutes and now I'm as

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intended thank you the test chamber will work when you arrive

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tomorrow oh wow this is just clear antifreeze GL GL

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GL wait did we ever plug in the pump for the AIO in there yes but also it's not

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working so well maybe the pump's working but either way uh we're at 115 wats

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right now now 100° on the CPU so uh it

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turns out AIO in uh -

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33° not a good time are you prepared for

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a very cold looking computer oh ouch ouch ouch ouch ouch you doing all right

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yep wow that's very cold this will need

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to sit for a solid day or two before it

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would be safe to fire up at this point even the air inside the CPU socket would

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have enough moisture in it that left leg like this it would be a major concern

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for it to be just pulled up in there how much glycol did you get in there I don't

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know I have absolutely no way of knowing yeah it'll probably be fine all right it

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seems like not fine is kind of the theme of this video though all

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right um that's a lot of liquid metal right how the crap are we going to get

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that off Oh serious okay I guess we

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haven't actually explained in this video certain thermal compounds will perform

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worse at lower temperatures and for those of you who are wondering what we

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are seriously using this equipment for that's actually the closest thing to it

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out of what you've seen so far is figuring out like validating

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manufacturer's claims about the safe operating temperatures of their

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equipment okay we going for it

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yep wow this is a very hard cable to move this feels like being in an Arctic

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wind yes it very much does oh my God

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come on come

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on okay oh yes yes yes yes yes we've got

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output okay so here's the thing when we

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were using the industrial Chiller obviously actually it has a very similar

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cooling capacity about 5,000 Watts yeah

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but the chiller is gated it won't go under 5° on the coolant theoretically

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with -40° air our traditional water

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cooler could go below 5° we're not

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expecting it to Simply turn to solid ice immediately what we would hope to notice

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though is if it was starting to solidify around the edges I think I'm starting to

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see a little bit of freezing on some of the tubes it might just be external

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seriously Oh no you're right holy crap that's a problem if it's around the

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outside it's not too bad I don't it's around the inside I don't think it's the

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outside I think it's the inside how's our CPU doing 100° at the entrance to

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that radiator there's already ice the wildest thing is that that might

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have been because of CPU over temperature it was only at like 80 Watts

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on the CPU and 100° like that could have

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actually been our problem and I don't know why if you guys enjoyed this video

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you I obviously like watching us goof around so why not the most extreme Air

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cooling setup yeah we haven't thrown to that in a while it's a good one it's a

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classic woo oh she's cold whoa did you

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hear that

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yeah well the answer to how much antifreeze was in there is oh it's

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really cold not enough