Cross flow fans in PC cases use a design similar to air conditioner compressors, featuring a large surface area that can pull significant amounts of air while operating at lower speeds for quieter operation. The dual cross flow system creates controlled turbulence that compresses air more effectively, and through acoustic interference where sound waves at specific frequencies cancel each other out, these fans achieve superior cooling performance with reduced noise compared to traditional spinny fans.
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Lian Li has been cooking // Computex 2026追加:
Hey gear stickers. I'm Nick. We're out here at Compyex Taipei 2026 seeing what our friends over at Lean Lee have on show. We finally have the final version of the Land Cool 4. The uh new Lancool 207 XL has a handy dandy little secret in the basement. And finally, the B4 is here. But before that, here's a word from our Combutex Taipei 2026 sponsors.
It's us.
>> Our Competiteex 2026 coverage is proudly brought to you by us. No major sponsor this year. We're doing our own thing. If you'd like to support the channel, hit the subscribe button. And if you like the music you hear on the channel, we make the music. You can listen to it by becoming a channel member. Now, back to the show.
>> Last year, Lee showed us a prototype of the B4 MATX, but this new iteration is slightly different. They've decided to make it a dual mode case in the way that it can either be upright or you can lay it down. They've also added a >> They've added some wood, guys. Can you believe it? We've never seen this before. We've never ever seen a case with wood, but it does have some cool little features. As you saw, the B4 MATX is in the upright position on the black version of the case. On the white version, it's in the uh the nice orientation, but to get inside is where the real trick happens with this case.
Put your finger underneath the front panel, lift it up, and then you can lift the panel up and away from the case.
Then to remove the side panels, you want to slide them forward. And Bob's your dad's brother. you can get in and take off all the panels away from the case. But the cool thing about this case is to change the orientation is really, really easy.
You don't need to use a screwdriver.
Regularly, when you have this case on your desk, you'll have the power supply cable coming out this way for easy access for plugging it in. However, Lean Lee has made the power connector rotatable to make it flat because when you want to change orientation, you just do that. Pretty handy. Now, we're not going to go too much into this case here at Compex because I've got a secret.
We've already got this one at the studio ready to review when we get home. But to make this easy for you guys, the release date, my friends, June 26. So, in a couple weeks, $69.99.
But more on this when it's time to review it. Yeah, there's another O1 XL. This is a prototype of the upcoming O1 XL. A bit of feedback I had for Lean Lee with this case is look, I'll be honest with you guys, it is kind of cool as compared to what they've been doing in the past. The way to get inside it is a little different. They've decided to add hinged panels. So, you can open it up like that, right? You can swing it all open to get access to all of your hardware, which makes it a little bit nicer, especially if you're an idiot like me who uh sometimes breaks TG panels off camera. I have been known to do that. But, it has a new type of intake for air flow. And I'll show you exactly how this works. It's not revolutionary, but there's a TG side panel here, which directs air straight into a cooler or fans on the side of the case. This is something that we're seeing more of. And typically, you would set this as intake on your case. But if we just uh pop on over to this case, you can see why this matters. There's a mesh panel here that helps with intake on the side of the new O1. When it comes to prototypes, guys, I know that vendors who make these cases really love to show prototypes on the booth, but I would like to see something more solid because I don't know if I mentioned it, maybe I did. This panel is really saggy and by the end of the show, this is the first day. This thing's going to be absolutely cooked. Oh, you guys asked if I really called him that. Hello, it's PC Mister.
>> Wow. Hello. I was talking about the review of the um of the 011 M Vision that we did the other day and I made a joke about PC mister and people didn't believe that I call you PC mister in person.
>> Unfortunately, he does.
>> Mr. PC as well.
>> How are you, bro? Good to see you. When we reviewed the Lan 207 when it came out, I said to you guys that the 207 is one of my favorite Lean Lee cases that I've seen in a long time for a few reasons. First of all, moving the power supply to the front of the case is a no-brainer. It's awesome. It makes it really easy to build. Having an extension cable is really not a big deal. But they've gone one step further this year. They've redesigned the front panel. Looks like jailb bars. If you've ever been to jail, I don't know. But they have two cross flow fans. So last year at Computex, you would have seen that Trix had the Flover, the Flover takeover. And when we reviewed the Flover, we really liked it. There's other media outlets that didn't really like it. You know exactly who I'm talking about. You don't have to hate on everything. This has two of those cross flow fans in the bottom. These are smaller than the Flvers, but they're a little bit more dense with their cooling capacity. Liam Lee is telling me that when they're doing their GPU testing with these Crossflow fans, as opposed to the regular 207 with the 2120s in the bottom, they're getting a 3° temperature delta between the cross flow fans and the regular old conventional boring spinny boys. Let us know what you think about cross flow fans down below in the comments section. So, the way the cross flow fans work is basically the same way that your air conditioner compresses air. It has a massive surface area. It can pull a lot of air in. And the bonus of cross flow fans is they're very, very quiet. However, as I mentioned, this is a dual cross flow system. So, what it does is creates a little bit of turbulence to compress the air even more, making it even more quiet. Because what happens is when you create enough noise at a certain frequency, the same frequency or a harmonic frequency can remove the sound altogether. And that's really the idea of this cross flow fan right here. How cool is that? And it's PWM powered. As for pricing and availability, the Lancool 207 XL will be coming in Q4 of this year starting at $129 for both the black version and the white version. And it also includes the dual $170 mil fans at the front. Let us know what you guys think down below. I I'm I'm really liking it. I think this is kind of the sweet spot. And this this is just so freaking cool. And finally, friends, the Land Cool 4. This case has had more iterations than any other Land Cool case ever because the iterations have come before the case has even launched. This is like the fifth version of this case that I've seen, but we're in its final form now. We've got these three integrated fans in the front TG panel. They've rotated the power supply.
There's an optional screen on the side here as well. There's hard drive mounting underneath this. You can change the angle of the fans as well. What they've done is tried to do absolutely everything with the Lancool 4. In fact, there's almost too much to talk about with this case. So, guess what? We're not going to talk about it because at Computex this year Oh, you're still filming. Why are you still filming?
That's all you need to know about the Lancool 4 is I don't have enough time to talk about this right now. And it's not even my fault. Come on. You really think I'd do you dirty like that, guys? This is me. We've got these massive fans up the front. There's addressable RGB rings that will all connect to Lconnect on the front of the case as well. The Lanc 4 supports back connector motherboards.
360 mil liquid coolers at the top. Like I mentioned already, you can now angle the fans because the back panel of the case is open and it allows for additional air flow for your GPUs. And why this is cool is I always talk about when you change the angle of air, you reduce the air flow. But if you hit it at the right angle, you're kind of bouncing air around the case in a good way. So what happens is you pull the air in at 45°, it bounces off the case at 45°. And the angle of incidence is the angle of reflection. Quick maths, you get a 45° change with the air flow straight into the graphics card, improving your GPU thermals overall, right? I may look stupid, but yeah, I know. I I know. Yeah.
>> Yeah, I am stupid.
>> What else is there? What do you guys think about the Lancool 4? It's great to see this in its final form. We kind of saw this last year at Computex. It was very unfinished. This feels a lot more polished. And the first version we saw of CES 2025 is nothing like this. Well, that's everything that I think you guys will find interesting at Lee at Computex Taipei 2026. There are some things I didn't talk about. First being the new P28 V2 fans. It's the classic P28 formula with an integrated RGB strip.
They sold a RGB kit for the original P28 fans, which they sent out to us and I just never used it. And the fact that they included it is is cool, but I think the whole idea between the P28 series of fans originally was no RGB, no frrills, and to be as simple as possible. I think they've maybe added a bit too much complexity with the P28 fans. I did make a comment that they could have included some black diffusers so you can't see it when the lighting's not on at all because there is a little bit of a white strip. There's also a bunch of new stuff with the coolers where you can change the pump top between like a digital display rather than an LCD like a full like screen and you can use any of the different types of screens on the same cooler, which is a really nice idea in theory, but in practice it means that you're going to have to buy the other parts. And when that is a factor, it all comes down to availability. In regions like Australia and even the US, I've been speaking to some resellers that are US side have said that Leon Lee stuff is kind of hard to get in the US when it comes to accessories as it is. So them selling a screen might be a little bit difficult. They got some new power supply stuff as well. They got some wire sensing for the 12vt high power connector. And by that I mean it's different to what Cooler Master is trying to do. It's got a thermals probe on the cables themselves. It's also got a new PWM and USB hub. Uh they've changed the connector to a USB 3.0 motherboard header connector with a pass through as well as USB 2.0. They said they've got some smarts inside of it to detect like what device if it's USB 3 or 2.0. But largely that kind of stuff has been solved. And to be honest, it's a dumb device as it is. So it doesn't really need that to be in there. and they can usually tell that by the voltage and the bandwidth that something is requesting when it comes to USB anyway. So maybe they've over complicated a USB hub. They've also got monitoring and alerts for the 12vt high power cable which to be honest uh if I'm being frank about it. This is a problem that Nvidia created and I find it strange that every vendor needs to create a solution for something that just shouldn't exist in the first place.
Those little 12vt high power cables are piss weak. they can't take much power and we've seen how often they're failing. If they weren't failing as much as we see around the place, then it would be a non-issue. We would never have to ever talk about it. But shout out to Adam Patrick Murray at PC World this morning when we were having breakfast. He uh kind of made me think more about why it's good for these companies cuz it's created a market that really didn't exist solving something that Nvidia created. It's it's weird.
They giveth with one hand and taketh away with the other. Or in this case, they giveth with one hand and giveth more with AI.
I don't know. Anyway guys, that's going to do it here for Lean Lee at uh Computex Taipe 2026. Let us know what your favorite thing was.
It's a little bit light this year for me if I'm being honest. Uh Lancool 4. We've seen a bunch of them, but it's got to be the B4 MATX.
But for our full review, make sure you're subscribed if you like the music you heard here. I make all the music.
The B4 review is coming in probably two and a half weeks. What?
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