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Welcome to another unboxing. This is the Swifttech

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MCR 420 XP. So, this is part of their XP

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series of radiators, which is their higher performance, higher fin density

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versus the QP quiet power series of radiators. And this is also their

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largest radiator to date. So, out of all of the radiators SwiftTech has produced,

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this one has the highest overall cooling

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capacity. So, you can see this is an MCR, although I guess it'll also work

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for XP. Oh, yeah. Okay. MCR. And it'll also work for XXX-, you know, XX

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uh series radiators. Make sure the screws do not hit the water channels.

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This is a very good warning. you should heat it because if you go all the way

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through to the water channels, you will puncture your radiator and you will have

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no warranty whatsoever for doing that because it is your own fault. All right,

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here in this little box, we find the only real accessories that come with a

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product like this and that is mounting

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screws. Wow, these are uh packed in here pretty

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good. Pretty difficult to remove. That's

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okay. We have unboxed things before on this channel. We will unbox things

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again. We will not be stymied. All right. So, here you

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have these are the correct length for going through 25 mm fans into the

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threading on the radiator itself. So, you'll see here on the rad there are

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threaded holes just like that. So, you go through the fan into that. And you

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see there's quite a gap in between the thread and the fins themselves. Just

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make sure you don't go all the way through into that. You should actually have enough extra thread left over on a

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screw like this to even do a fan grill, but it'll be tight. We've also got a

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couple here for mounting the radiator directly to the case if you do not have

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a fan in between. So those are the mounting options that are included.

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Next, we've got the radiator itself. So

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this is a very high fin density radiator. So what does fin density mean?

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Basically radiators all work the same basic way. You've got fittings up at the

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top. Okay? So here you can see we've got G14 threaded holes. Okay? And then

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you've got a tank, two tanks up at the top just like this. Usually there's a

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little bit of a spillover between the two tanks that decreases the overall

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restriction of the radiator without dramatically affecting the performance.

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So what happens is it goes in this tank. It goes down the tubes that are attached

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to this tank. So these tubes right

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here all the way down to the bottom where there's another tank. You can see

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this tank is quite small, but it is attached. This tank is attached to all

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of the tubes. So, it goes down these tubes into the reservoir tank at the

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bottom, up these tubes, and then out the other G1 quarter

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fitting. So, what determines the cooling performance of a radiator? Basically,

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surface area. Water cooling is all about taking something like this and cooling

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your CPU with it, which is something that you cannot realistically do with an

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air cooling heat sink because you can't fit this directly on your CPU. So you've

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got a ton of surface area. You've also got water, which is an extremely

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efficient way to move heat around. So you move the heat away from your CPU,

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which has a CPU block on it. You move it into the radiator where the idea is you

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have this enormous surface area. So how does the surface area happen when all

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you've got is these little tubes. Well, these tubes are soldered to aluminum

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fins. So when I say high fin density, what I mean is you see how these fins

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are folded on themselves? They're just folded, folded, folded, folded, folded all the way down the length of the

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radiator. Well, a low fin density radiator will have fewer folds. So, like

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a bigger S shape, whereas a high density radiator or FPI, fins per inch. High FPI

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rated radiator will have many little folds. There's disadvantages and

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advantages to each. This one has more surface area, which means more cooling

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capacity than a QP series radiator, which has bigger S shapes. However, if

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you're going to use low RPM, quiet fans, you're actually better off with low fin

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density. So, this radiator is for high

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CFM, high static pressure fans, which can blow a bunch of air through it,

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regardless of the restriction that it's causing by being so dense. Whereas, if

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you have low RPM fans, you're actually going to be better off to have less

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restriction to the air flow, less density in order to get the most cooling

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potential out of it. So, this particular radiator takes four 120 mm fans on one

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side, four 120 mm fans on the other

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side. Although, you do not have to install eight fans on it. You can do

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just one. And I actually get this question a lot, too. How do I install

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fans on a radiator? So, I might as well answer it since I'm here. You can either

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install them blowing air down through it. You can install them flipped the

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other way, pulling air through the radiator from the one side and then

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pushing it out away from it. Or you can do pushpull, which is to install eight

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fans. So you blow away this way and suck in this way. Personally, my preferred

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way of installing fans on a radiator is to do one bank of fans. So four fans

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down the one side, pulling air through the radiator and then pushing it away

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from it. Why do I do this? The reason is very simple. Because I am lazy.

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If you have fans blowing air down into the rad, so you've screwed them in, what

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happens is you're going to get dust buildup all along this surface because

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that's where the air is pushing down onto the rad. In order to clean it, you

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have to either blow compressed air at it, okay, which won't even do that great

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of a job cuz there are fans in the way, or you have to unscrew all your fans,

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blow it off, put the fan back on. So the reason that I always install fans

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sucking air through the radiator and pushing it away is that then all the

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dust accumulates on this surface. So I can just go clean it off and I am

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done. So this particular radiator is available in a variety of sizes. You can

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get it with single 120, dual 120, triple 120 and quadruple 120. The advantages

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and disadvantages of each are that the smaller the size radiator you go, the

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better your case compatibility is going to be. And the larger size radiator you

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go, the better your cooling performance is going to be. So there are very few

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cases that can internally mount a quadruple radiator like this. But I will

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be installing this in the Silverstone TJ11 for my ultimate liquid cooled

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machine. And I hope you guys stay tuned to my NCIXCOM channel to enjoy that

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particular video. Here's the little Swift Tech logo on the other side. I

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didn't show you guys yet. So, thank you for checking this out and don't forget to subscribe to Linus Tech Tips for more

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