We were thinking you would be so cool if we tried to overclock at the North Pole, but the North Pole is very cold
But what isn't is our environmental test chamber with the ability to go all the way from a hundred and eighty degrees
Celsius to negative 40 we can test everything from your nan's cookie recipe to a computer at the North Pole
So, let's see just how fast a PC can go at negative 40 degrees
And if it can even survive what will survive is this segue to our sponsor build redux?
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Before we can take the chamber down to negative 40 degrees and chuck a PC in it
We first need to heat it up. So here's the thing at minus 40
Condensation is gonna be a really big problem and although in the near future
We're gonna have humidity control in our environmental chamber. We don't yet have the air compressor
That's required for us to do that
so instead what we can do is just heat the chamber up to remove all the moisture from the air and
Then cool it down now since we needed to have the chamber heated up anyway
We were curious
What was the performance of a PC look like if you were to take it out of a comfortable room temperature whoa?
Oh, that's spicy fast fast fast put it. Oh, sorry. Sorry. I'm putting it in
I'm putting it in and put it at an insane
49.4 degrees Celsius the all-time Canadian record for highest temperature recorded in Lytton two years ago
Let's get this thing hooked up. I did not orient it correctly. Yeah, we also need cables
It's a whole thing. Okay, let's do it. I mean, that'll probably do right we can just take the squid over there
Have we got this we also need to go we can't just go straight in
We need to go over this down do a loop and then in the reason for that is that not now
But later we have a lot of potential for condensation to form around here and potentially
Drip down our cables and we don't want it to get onto anything that matters
We want it to just drip down here around the floor this bucket. Okay. So this poor computer is running at 50 degrees right now. Oh
Shut up
There's a whole like web interface for it that I mean that makes sense. Yeah, so you can fully control it from here
Program in routines and stuff and also see like oh we open the door there and we open the door there
Wow, it actually loses less temperature than I would have thought. Yeah, it wasn't too bad. Our poor CPU is sitting at
75 degrees right now
Doing nothing and what's really wild is that these temperatures aren't even unrealistic
If you lived in one of the hottest regions in India
For example, you could see temperatures close to this on a fairly regular basis in the summer
What's our what's our planned load?
Like should I just cinebench it real quick instant thermal throttle and our poor CPU is running at a mere
4.14 point one three. I mean it's well above base clock
Which is kind of impressive. Oh, it's it did a burn-in test. Okay. Okay. Let's see. We're at
4.02
3.99
Man what's everything else looking like
Surprisingly the motherboard VRM's are still very reasonable. Good job gigabyte, I guess
GPU idling at 52 which is impressive when it's sitting in a
50.6 degree Celsius chamber Wow dipped as low as three point nine four three point nine three
That explains why the motherboard VRM's aren't getting hot. Oh
There's no power. They're not pushing any power through them now that we've heated up our CPU
Let's get an actual score for reference. I would expect
36,000 on a computer like that. We are not getting 36,000 sir. I will eat my sandal if we get 36,000
33,000 points, but how will Nvidia fair Fer Mark you want to do Fer Mark and yes Fer Mark? Oh my god
I want to run like 25 60 by 1440. That's pretty good for stress test 4x anti aliasing go
Now what we're looking at on an Nvidia GPU is not the temperature because it's not going to go over 80 85 degrees
They're hard limited
What we're looking at is the effective clock speed because they will just throttle down their performance
To match whatever they can do within that thermal target. It's doing pretty well. It's doing pretty well so far
The one time that 40 90 cooler is needed that fan is running at 90 percent though
We can't hear it over all the sound around us, but that thing must be freakin ripping
Okay, I want to know can it can I crack it? Yeah, go can I crack it just to hear it? Okay
She's gone
It's hard to tell but she's definitely going it's not in real time
so it might take a minute or two to show up, but yeah, we lost a
Bit here Wow Alex our fan speed isn't even a hundred percent. This thing is
handling it
How we had a whole plan for this video where we were gonna show like dog slow performance at 50 degrees on the GPU
And then we were gonna ramp it down to like, you know
The average Arctic temperature in Canada negative 40 and show how it's like. Yeah
It's doing it. What the heck?
Okay, these coolers are so over spec'd
Hold on a second 40 90
specs
Founders, okay. This isn't a founders card. This is uh
Looks like yeah, it's an Asus Strix card, but
Realistically, they're all gonna have fairly similar environmental condition ratings
I cannot find any reference to a safe environmental operating temperature for the rtx 40 90
I guess we're off the rails for the rest of this video
All right
I want to take this down to minus 40 it does kind of make sense that it can do this because if you think about
Like a computer case you might expect it to be in
35 degrees you're pumping 450 watts into it for a while if the airflow isn't too great
Right inside of the case. It might be getting to 50 very well be 510 degrees over ambient
But good for good job a suits geez flipping gears then modern CPUs
Particularly from Intel don't even operate at peak efficiency at room temperature. So we are expecting
Ah, yes a very very different outcome almost immediately
we dropped from 200 watts down to 190 and the lower that power consumption is the less of our total potential
Performance that we're getting it's already dropped a full gigahertz of clock speed. That is 1 billions of clock speed
Oh, wow. Yeah, this is still dropping
We can give it a tiny bit longer. Sure. Now you said that until we have our compressed air set up here
We are not going to be able to control humidity. I mean obviously for wetting the air. We've got this water tank
So I guess the compressed air plays a role in drying the air
Yeah, the compressed air goes into these desiccant chummies right here. Okay, so there you get dry air out
All good. I see so it'll basically go. Oh, no, it needs to be wetter up. So it needs to be drier
And that's pretty much it but you need quite a bit of pressure and a lot of CFM to
Blast all the air through so we need a big air compressor got it
This seems to be settled in we went from an average clock speed of four point seven gigahertz all the way down to three point
Five five and our power is down from over 200 watts to just one hundred sixty now
It's time to pull our temperature down to the average Arctic temperature in the winter here in Canada. Okay, I hear her doing something
Hey, buddy, you okay in there now, there's a lot of
Leakage so that's probably just the air blowing past the compressor
Okay, which we can look at ah
Also in the time that took you to go from over there to here we dropped 10 degrees
Really? I
Thought you said it was gonna take half an hour to pull down
I guess it gets harder to pull down once the environmental temperature is higher than what it's trying to do. Yeah
Wow
There goes another one. They're biting the dust and another one. Got you. Yeah. Sorry, okay
Holy
schnikes I
Underestimated the size of that compressor
Wait, is this a two-stage system?
It looks like it but no it's not
We thought we had two stages of phase change cooling one to cool down the chamber and one to cool down that stage
but what we're actually looking at here is a gigantic three and a half horsepower scroll compressor and then a couple of
Accumulator tanks that seem to play a role in drying the refrigerant
So removing any moisture which can't be compressed and also filtering it so that it can operate as efficiently as possible
Shout out Jake Danes for helping us read the schematics is our CPU seriously still at a hundred degrees on a Noctua NHD 15
It's actually really confusing because around like 15 degrees Celsius
It was doing pretty good and now the clock speeds are dropping and so is the wattage
So I wonder if like our thermal paste has frozen. Oh
It's been at a hundred degrees the whole time. We might have just frozen our heat pipes
Wait, did it just crash?
Welcome back
To land on the living the GPUs at negative 16 degrees on the memory
I really want to check it for condensation
But I don't really want to open up the door and add in a bunch of condensation. See this warm air
When it touches the cold stuff
We'll immediately have the moisture drawn out of it where it will collect on the cold stuff
Do we continue with this computer?
No, I think it's time for us to take it to another level. This is where things get really spicy
Because remember that part we mentioned about how when we open it up the warm air condensation, etc
We need to find a way to swap components on this bench without destroying it. We're gonna have to be really fast
Okay, and once it's running through maybe it'll be fine. If it's just sitting in there. It's gonna freeze right?
I'm so sorry deep cool. Thank you for sending us your all-in-one liquid cooler. I don't know
Why are we just gonna wing it? Let's just open it up and see what happened. We're just gonna wing it. Ah, okay
Currently minus 35 freaking cold. Okay. This is bad. It is condensing already Alex. This is very bad. Yeah
Oh
Also is the computer on right now
Why is the computer on oh my god, it's frosting over. It's frosting over already Alex
Close the door of it. Let's get yeah more more more. Oh
My god, it's really bad. Sorry Andrew. You got a oh my god. This is so cold
We're just gonna get the hardware after all this is bad
you gotta close it more close it more shoot me through the window just
I
Mean here. I'm in here. It's fine
Okay, I need the backplate
Oh my goodness, she's frosty Alex I can tell
Where's the other where's the old backplate? Oh, it fell off. Okay. Okay. You got it. I have the old backplate
There's the new one. Oh
Oh crap, this is bad very bad
Okay, so it's just a second I need to hold this back plate on I think yeah, there it goes
Okay, good work
Here we go. Oh
My gosh. Oh, sorry. I just elbow you in the head. Yes. Oh, sorry. That's fine
Okay, is it theoretically ready to power up? Okay, we gotta close it Alex. You can't organize
organized hardware in a little tray
Have you gone mad sir?
So the power buttons in there Oh ball. Oh god. It's at 92% humidity Alex
Why did we change the cooler?
I'm just here to hold the door for you. Um, it's content. Don't blow up my chamber, please. What we should have done
Was brought it back up to room temperature then pulled it down again
It does appear that Linus was right and there is no more frost all over our computer. Our AIO might be frozen
But it should be fine. You may remember this computer from our direct dye cooling video recently
Well, it's still got the same direct dye water block on it
But instead of using an industrial chiller to pump fluid through the loop. We're gonna be running this inside our air chiller
Yeah, I was wondering about that. So instead of using straight water
We are apparently wait, is this windshield deicer or is it like all ah, perfect
I expect some problems problem number the first this doesn't seem like a lot of glycol problem number the second glycol when it reaches
Certain temperatures gets quite viscous. And this is just a PC cooling pump. This is not your car's cooling pump
Have we crossed the line from fun to stupid?
No, what would be stupid is if we didn't use this tray because if the water from our computer
Gets onto that and they common ground we blow up both of them. Don't worry. Everything's fine
I didn't think it wasn't but now I'm concerned. No, they're fine
I'm down. Everything's fine. I'm leaving in five minutes and now I'm concerned intended
Thank you. The test chamber will work when you arrive tomorrow. Oh
Wow, this is just clear antifreeze
Glug-glug-glug-glug-glug-glug-glug
Wait, did we ever plug in the pump for the AIO in there? Yes, but also it's not working
Oh, well, maybe the pumps working but either way we're at a hundred and fifteen watts right now hundred degrees on the CPU
so, uh, it turns out AIO in a
Minus 33 degrees not a good time. Are you prepared for a very cold looking computer?
Oh, ouch, ouch, ouch, ouch, ouch, ouch
You doing all right? Yeah. Wow, that's very cold
This will need to sit for a solid day or two before it would be safe to fire up at this point
Even the air inside the CPU socket would have enough moisture in it that left like this
It would be a major concern for it to be just pulled up in there. How much glycol did you get in there?
I don't know. I have absolutely no way of knowing. Yeah, it'll probably be fine. All right
It seems like not fine. It's kind of the theme of this video though
All right
That's a lot of liquid metal, all right
Crap, we're gonna get that off. Oh
Serious, okay
I guess we haven't actually explained in this video certain thermal compounds will perform worse at lower temperatures
And for those of you who are wondering what we are seriously using this equipment for
That's actually the closest thing to it out of what you've seen so far is
Figuring out like validating manufacturers claims about the safe operating temperatures of their equipment
Okay, we going for it. Yep
Wow, this is a very hard cable to move this feels like being in an arctic wind
Oh my god, come on, come on
Okay, oh
Yes, yes. Yes. Yes. Yes. We've got output. Okay
So here's the thing when we were using the industrial chiller
Obviously actually it has a very similar cooling capacity about 5,000 watts
Yeah, but the chiller is gated. It won't go under five degrees on the coolant
Theoretically with negative 40 degree air our traditional water cooler could go below five degrees
We're not expecting it to simply turn to solid ice immediately
But we would hope to notice though is if it was starting to solidify around the edges
I think I'm starting to see a little bit of freezing on some of the tubes. It might just be external seriously
Oh, no, you're right. Holy crap. That's a problem if it's around the outside. It's not too bad. I don't really inside
I don't think it's the outside. I think it's the inside other CPU doing 100 degrees at the entrance to that radiator
There's already ice
The wildest thing is that that might have been because of CPU over temperature
it was only at like 80 watts on the CPU and a hundred degrees like
That could have actually been our problem and I don't know why
Can't turn back on. You know, it can turn on though
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69% off your first purchase or subscription. Nice. If you guys enjoyed this video you I
Obviously like watching us goof around. So why not the most extreme air cooling setup?
Yeah, we haven't thrown to that in a while. It's a good one. It's a classic
Whoa, you hear that?
Yeah
Well, the answer to how much antifreeze was in there is well, it's really cold not enough