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This is the best computer fan. And this

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this is its daddy. At $422

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and with the ability to move nearly 500

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L of air per second, the THD 2048HT

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is the most powerful PC cooling fan made

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by Blowy Matron manufacturer Delta Electronics. We only have a couple of

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small problems. First, we need a case that's going to fit it. Oh, I guess we

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solved that one already. Second, we are going to have to figure out how to power

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it. It draws 600 watts and doesn't even

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come with power terminations. Finally,

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we're going to have to figure out how to not get our fingers chopped off while

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we're working with it. This is going to be a wild ride.

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First, the unboxing experience. As an industrial product, the THD 2048HT comes

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in fairly non-escript packaging, and they make the assumption that if you

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need one, you probably need at least two. This is a master carton that we got

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from uh Digi Key. From Digi Key.

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And I think the most noteworthy thing about it right out of the box is that

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instead of being made of plastic,

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the frame is actually constructed from what appears to be cast aluminum. Yeah,

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diecast aluminum. Well, that would help explain some of the cost. Like a blowy

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matron server fan, it's got an extremely large fan hub. That's to accommodate its

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powerful motor. Hey, there's one of them. And like a server fan, it's also

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got these airflow guides on the back that I guess couldn't help double this.

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Now, that's not going to keep your fingers out of it. On the subject of

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putting your fingers in this thing, it spins at a rated speed of 7,400

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RPM. And now I can see you guys thinking, well, gee, that's not really

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that much faster than something like this. Uh, that thing's 11,000, right?

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But even though this spins 4,000 RPM

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faster, what it doesn't have is a ton of

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inertia. These blades,

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these got weight. This gets even

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scarier. It's rated at 48 volt DC, but

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it'll operate at anywhere from 36 to 75.

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Does that mean it'll go faster than

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7,400 RPM? Is it DC controlled? We can

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find out. Do we have a variable power supply? Imagine we do. Oh my god. This

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won't be our highest airflow PC, but

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it's going to be like right behind it. And these are way smaller. My first

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thought for powering these was no problem. There's cases out there that

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accommodate two power supplies. So, we'll just put a second PSU in our

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system, wire up some PCI Express power connectors to it, and we're off to the

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races. 1200 W of fan. No big deal. Unfortunately, this is not a 12vt fan,

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and computer power supplies only deliver 3.3, 5, and 12 volts. This boy runs at

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48 volts. So, um, Alex, I see you have a

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few different power supply options for us here, ranging from safe looking to

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terrifying looking. Oh, no. We need both. So, we have this power supply

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right here. 24 volts, 60 amps. Good one.

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And then we have these terrifying looking things that we bought off Amazon

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because they were cheap. And this is a boost converter. So you put 24 volts in

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this side and you get whatever you want out of this side. How do you control it?

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Oh my god. It's just potentiometer. Yeah.

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Are you kidding me? No, you're not. No.

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Why would I be kidding? It's a boost converter. It doesn't even have a

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chassis. Who needs a chassis? It has a fan. It's rated for 1500 watts, but

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we're we bought a couple of them cuz I don't trust that. How big are those

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caps? T in 100vt 470 microfarad. That's

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not sending you across the room, right? No. No. Yeah, it's fine. It'll hurt.

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Yes. It'll do a lot more than tickle. I wouldn't lick it. I wouldn't touch it.

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And literally the control scheme for this thing is to poke it with a

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screwdriver. He laughs. I think out of all the

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employees, you're the one who's trying to kill me the most right now. Well, no

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one else is trying, I don't think. I mean, Dennis fought me. Oh, true. It's

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worth checking out that channel. Super fun. And all the amazing behind the

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scenes and extras on Floatplane.com. Oh, there's an M4th threaded thing here. Do

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we have like a little stand we can put it on or something? Oh, like when we're

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just testing it. Yeah. Oh, I feel like our roles have reversed here. I used to

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be the one who made you feel uncomfortable. Oh my god, that is not

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good. It's fine. It's fine. I want another clamp. It's It moves. It's

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barely moving. It's barely moving. It moves. So, when we first turn this thing

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on Yeah, you can hide if you want, Brandon,

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when we turn it on. Just as long as you have the camera rolling. It's fine. Why

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is everyone so concerned about this? It's just a fan. Yeah, by that logic, I

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mean, you should just, you know, hang out near jet turbines, right? You

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couldn't just get like a variable power

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supply like this that does 48 volts. If you wanted to spend like $800 or $900 on

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it, sure. Oh, how much for these? 50

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bucks. I don't know which is scarier. I'm getting safety glasses. Oh my god.

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Do you see how crooked these are? Yeah. It's not the best solder job I've ever

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seen. I'm beginning to think the $50 price point of this is a lot scarier

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than the $900 price point of the other thing. Ah, thanks. I am concerned about

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this thing. Can we get one of the electrical engineers over here to tell Lionus he's being a dummy? A dummy? You

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say dummy? What you're looking at right now

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is our 1200 W 24V power supply hooked up

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to our boost converter. This is going to stay once we're powering the fan.

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Because we have no idea what voltage

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this terrifying thing is going to output until we measure it and play around with

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the little dial. We've got it temporarily hooked up to our Fluke

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multimeter. Okay. Wow, we nailed it.

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47.87 volts. I was actually playing with

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this yesterday to make it work.

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This one right here is your current protection. So you can set that to be

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like however many amps you want. And this one's a low battery detection. So

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if you're using this to charge batteries, you don't want like too low

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of a voltage going in here. So this just turns it off. Got it. Before we start

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though, important thing. Which one do you want? Oh, I'll take the pink one for

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sure. Is this our scientific airflow test? Yes.

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Yeah. Clamps. They're really good for holding things on. Hey, Alex. That's

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really safe. Remember, whenever you're working with anything that spins, you

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want to tie back your loose hair. Okay?

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Whoa. Whoa, buddy.

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Whoa. Okay. Whoa. Whoa.

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Alex.

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So, it's drawing 475 watts. Why did we

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need two of them? Why not? There's two

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fans in the case. You can't drop your number of fans.

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All right. Should we check how safe it is? How safe it is? Yeah, how safe it

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is. What do you mean check how safe it is? Well, I want to know if you get your

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finger or your willie stuck in there, what's going to happen?

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It takes a while to get going. It really does.

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which maybe is promising from a safety standpoint. It won't, you know, maybe it

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doesn't have that much torque when it gets going though. Yeah, it actually

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sounds like an aircraft lifting off. Look at the ARM hair.

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Wa! These blades are freaking sharp.

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Oh, wow.

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There's nothing solid. It's just gone.

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Look how clean that is. That's terrifying.

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Yeah. Yeah. A little bit. And I don't think it slows down at all, Alex.

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It's just It just a fine mist gone. What's the

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carrot like? Go for it.

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It doesn't care at all.

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Okay. All right. All right. That's a lot of Alex. It's all over the laser. This

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is carrot murder. It looks like chunks,

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but it's actually like almost mashed consistency. Wow. That didn't care at

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all. Hi.

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Was the pun on purpose? No, it wasn't. Could you feel it drawing the object in

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as well? Like just from the suction? Not really. No. Oh, I could with the

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cucumber. Oh, the back of the fan is

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pretty gked up.

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If we don't want carrot all over the inside of our computer, we got to get

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everything off this. Come on.

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Ow. Damn it. That hurt.

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That was honestly terrifying. Yeah. Do you want to see how fast it will go?

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Yeah. When we put these in the case, I am

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legitimately concerned that they are going to overspin the fan on the CPU

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heat sink. Oh, we just need to remove the fan. Yeah, it definitely will. Yeah.

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And to be clear, that's a problem. So, if we spin that fan in the computer too

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fast, it turns into a generator that is actually putting power back into the

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header on the motherboard and will almost certainly cause it to light on

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fire. Although that actually isn't a thing. They have dodes and protection

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and stuff. So, I'm pretty sure it just dumps it to ground cuz I've seen it

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happen. How long ago was that? That was a while back. It's still I wouldn't

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recommend it. Yeah. Don't do it. Yeah. Also, this is a good board so we're fine. Holy You went absolute top

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of the line, Alex. What if we ruin something? What if we blow carrot chunks

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at it? Well, no, it's fine. We're not going to blow more carrots. What are

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What do you think we're going to do? We're not going to put an i3 in this and be like, "Oh, wow. 65 watts. You can

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really dissipate that with these." What we're doing right now is we're putting a

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little piece of marking tape on one of the blades of the fan. This is going to

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tell our tachometer here how fast it's spinning. Okay.

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Now, every time this goes around ow ow

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damn it. Oh, that really hurt. Yeah, this is pretty terrifying. Anyway,

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here's what I was trying to show you guys. You spin this thing and depending

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on how often our marker tape shows up, it gives you a readout. So, if you spin

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it faster with something other than your finger, you get a higher number

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presumably. Let's figure out how fast it goes. Yeah. From a distance. 4,000

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4500 5,000 6,000

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6500 7200

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Look at the stuff on the other side of the room.

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We're at around 7,300 RPM.

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Whoa. You see that? It's drawing it in

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from the side. What are we at now? I don't think it's getting faster. No, I

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think you're right. I think it's controlled. Yeah, it's still at 7300.

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So, it does not have DC control. Question then, can we go lower than 48

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volts and would it run exactly the same? I don't know. No, it down but not up.

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Okay. We've all got goggles on still, right?

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All right. Should we put in a computer? Yeah, we should. to help us measure how

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much real world performance improvement we can get out of these. We need a new

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nickname for these. Sure. Like blowa. Yeah, blowa. It's a little catchier. To

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determine just how much performance improvement we can get out of our Blowzukas, we've taken before

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measurements for both of our CPU and GPU

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temperatures. In this case, with these stock 180 mm cooling fans, it's going to

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be a bit of a challenge getting these in here since the mounting holes are

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actually in different locations. I'm sure that's something Alex already

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figured out. I don't know if you'll like my solution. I mean, based on how much

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I've liked everything about this video that has literally hurt me so far. What

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are we thinking? We can either do out or

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in. I'd say it's got to go inside. If we're going to make the argument that

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this is actually a computer cooling fan, it should fit in the case. Okay. Yeah,

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something like that. Brandon asked if we're worried about the GPU fans. The

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air flow is not going to be directly on them, but there's going to be so much

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turbulent air movement that they might be a problem. Yeah, it might be a

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problem. So, we're going to need to do something to make sure that we don't get like aluminum bits in here.

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Okay. Did you hit the holes? Think it'll fit? I don't know.

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That one's perfect. How are you planning to do this? Uh, belt sander.

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Good job. Surprisingly clean looking. We

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got a flat top. Now, what are these things actually for? Do we know? Uh, no.

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Oh, I think electronics cooling. I guess that makes sense. That's kind of what

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Delta does. That's what we're doing with it. But like under what circumstances

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would you need 5,000 L per second? My

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guess is not so much like on a server,

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but around a server if you just need to move like a bunch of air into a room or

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out of a room. Have you ever actually had to procure one of these through work

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or something? Like hit us up in the comments. What are these things for? But

193
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look, won't even be able to tell. Now that is a sleeper. Yep. It's a sleeper

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until you turn it on. Oh, we should take the CPU. Uh aha. That would have been

195
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pretty bad actually. I am still pretty worried about even some of these other

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fans, like these case fans. There could be enough just air flow coming out of

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this case that it'll spin them. Unplug them. Well, I don't know. Let's see.

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Wow, they're shockingly quiet when we run them in the computer. Yeah. Yeah.

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So, it's 45 dB, but also like it's just

200
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the noise floor in here. It's not that quiet. I guess I should start a stress

201
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test. Yeah, just go for good old Prime 95. Okay. Also, this is an overclock

202
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chip. I played with it a bit. PVO's on.

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She goes, "Oh, look at our power." Whoa.

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What is happening? Uh, hello. These fans don't know what to do. They're stopping.

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There's so much air flow. They're trying to blow air in and these fans are

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blowing air through them. Something weird's happening. Something very weird

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is happening. Our CPU temps are going down though. So, this one just stopped.

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I wonder. Yeah, we might be current limited.

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Oh, our CPU is at over 200 watts now. Are

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you just cranking the current limiter? Yes. Okay, I think it's enough. I just

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want to show you guys coming out the back of the case what we're dealing with

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here. Where are we at? Oh my god. Holy.

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We're at 1300 watts overload, guys. This

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is just the fans. Can you tell it's like

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windswept? Who needs water cooling? Got the really

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good computer fan here. I guess we don't need any more airflow. Look at her go.

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What about we have two of these? Oh, how hot is that thing? Uh, so the wire

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currently is at 90°. Oh, I think your

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black wire is a thinner gauge than the red one. We can probably fix this. No,

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no. I have a solution. We'll just put this here. Active cooling our wires.

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Wires are 35°. We're good. Okay, check

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this out. It grabs it from out here.

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Oh,

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and if we like the aesthetics of the original fans, we could just put them

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here. I wonder. We can test it. I want to see if you get a back bolt or a back

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current. If we get more than 12 volts,

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it's spinning faster than it otherwise would have. That's less than I would

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have expected. Oh, yeah. It must have protection. That makes sense. Or maybe

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we need to spin it the other way.

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No, it does. You're right. It seems to have protection. I should put in hearing

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protection. You really should. We're at 95 freaking d. Stock is 1,200 RPM.

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It's over 2,000 RPM, though. Damn. That's almost double the rated speed of

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this thing. And it's not even powered. Are you seeing how dangerous 90 dB is

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for your hearing? Barry, you have to remember that every 3 dB is a doubling

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in volume because dB are done in a

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logarithmic way. So 95 dB is really

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freaking loud. You get kind of used to it though. And it's not until it's off

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that you go, "Wo,

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that was really loud." And holy crap, did this perform better than actually

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having a fan on the heat sink. Oh, by a lot. Holy crap. Did we drop almost 15°

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by removing the fan from the heat sink?

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Yeah. So the red is our before with just a normal NHD15. And you can actually see

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here where it starts dropping is when I took the side panel off. And this right

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here is when we turn on the blow zuka. You can just see the package power which

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was dropping. It's like Yeah. So this is the CPU throttling at 95° right here.

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Immediately we're back to actually a greater power budget. So we would get

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more performance by adding these fans to

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our systems. I think every workstation in the building should probably have one

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of these in it. Do you know what we should do before we close this out? We

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should run Cinebench ones on it. There you go. All right. Deal with crowd. Air

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cooling record. 85

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280 230 watts. Not bad.

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PC. I think this time is more elegant, though. Oh, yeah. But that was also fun.