 There are six $10,000 computers completely submerged in here. No, really. This entire rack is filled with a solution that cools better than water, dissolves in water, and it's absolutely 100% safe. But how can fellow Canadians hypertech get away with dunking in this very expensive gear like their Luke, AKA Slick PC? I'll tell you how. Right after I tell you about our sponsor, MSI. MSI's back to school sale is on now, where you can save on laptops, desktops, and components. There's also a giveaway to win some sweet prizes. Learn more at the link below or at the end of this video. Anyone who's been a fan of the channel will know that we've built several total immersion mineral oil PCs. So what's new here? Well, this isn't mineral oil, nor is it some flammable alternative. This tank, which is a show tank that's about half the actual length, is filled with a dielectric or non-conductive mixture that's significantly lighter than most popular alternatives while also being better at conducting heat. Given that's pretty much its only purpose, any improvement there is obviously welcome. To add insult to injury, the mixture is also a lot better for the environment. It breaks down safely in water. Mineral oil, by comparison, is a petroleum byproduct with a laxative effect at best and is a carcinogen at worst. I'm told that this mix is straight up safe to drink. Not that I really wanted to try it after being on the showroom floor for three days, but I did end up getting some splashed into my mouth, so I can tell you that it doesn't taste great. That was warm. Also, I tasted some. I'm assured that it's not 3M's Novex 649 as well. That stuff likes to boil and is dangerous to inhale. They wouldn't tell me what this stuff is exactly, but it's also not a hydrofluoroethane like Novex 7000 either. Your guess is as good as mine. Oh, and they're making the chassis out of ocean recycled plastics by end of year as well. At least that's what they hope to do. But let's back up a sec. Server racks in data centers are already cooled by high-end air coolers and even liquid coolers. So why are we even talking about this? Well, there's a few reasons. First and foremost, this rack has zero fans and is basically silent by comparison. It works by pumping the coolant through a loop to an exterior box that looks a bit like an HVAC unit. That box exchanges the thermal energy from the hot mixture to a cold water source in a single phase arrangement. That means practically all of the noise it does make, so the pump basically, ends up well outside of the room. Because the installation doesn't require raised floors or bulky chiller units inside the data center, it's relatively easy to retrofit into existing architecture. What's more, because all the heat is exchanged well outside of the rack, the rack itself needs no HVAC to cool it, something we've struggled with in our own relatively tiny server room. That means significant power savings, because not only does HVAC that's beefy enough to cool an entire server room or data center require a massive amount of juice, so too do the high-performance fans that you hear screaming inside of those racks. Hypertech claims a 30 to 40% reduction in cooling costs compared to HVAC alone, along with a 60% better hardware lifespan. And to achieve that, they painstakingly remove all of the fans from the hardware inside of the systems and replace their RPM sensors with sensors to monitor the temperature of the cooling solution, as well as updating the BIOS to understand that. This results in far less moving parts, which are typically the most likely to fail, all while retaining the original warranty, thanks to their partnerships with hardware vendors like our good friends at NVIDIA. Speaking of NVIDIA, they're part of the reason why Hypertech is here to begin with with this immersion rack. Rumor has it that the upcoming newer generations of GPUs and CPUs alike are going to be designed to draw more and more power, meaning that traditional cooling solutions will struggle to keep up without more exotic cooling solutions like Hypertech's. Hypertech says that their solution can handle basically any load they can foresee, up to nearly 100 kilowatts. And they can tailor the installation to meet the demand if for some insane reason that's not enough to dissipate all of the heat your rack's blasting out, or I guess, soaking out. Now, in a traditional data center, the systems inside it generate a boatload of waste heat, like effectively 100% of the electrical energy a computer consumes ends up converted to thermal energy, or heat. Then we had to use even more electricity to get rid of said thermal energy, which we call cooling. Now, we've already told you how this takes the cooling electricity draw out of the equation, but what if I told you that the heat electricity draw, which there's no way around, we need that for computers to work, could be used for something else. Hypertech claims that 99% of the heat generated inside the loop can be captured as water. They already have deployments that dump the heat into a building's hot water loops and inflow radiant heating to either provide extra thermal capacity to those systems, or even power them outright. That works out to a significant energy savings, because not only do you then not have to deal with HVAC, you're also not footing as big a bill for water boilers, especially if otherwise you'd have to upgrade a loop as you're needing to expand. One thing you might be wondering at this point is, aren't those ports submerged too? And yeah, I was wondering the same thing. When we built our mineral oil PC, we let the IO ports on the motherboard and GPU exposed. But here, all hardware maintenance is done with the dielectric mix already in the tank. And that includes plugging and unplugging connectors. I'm told that the mixture is thin enough that electrical connections can be made reliably, although fiber optic cables need to be plugged into their SFP transceivers first, because of how sensitive they are. A thin film of dielectric is enough to prevent reliable transmission if you were to just shove it in there. And speaking of shoving things in there, like while you don't have to worry about dust buildup as you do on traditional air cooling, you're meant to work directly inside the dielectric. So that means oils, bacteria, and yes, dust particles will collect inside the loop from time to time. That's where the loop itself comes in. Because the coolant is constantly cycling, they can filter it later down the chain in the easy to access panel that makes cleaning much easier than a traditional rack where you'd have to dust them individually from time to time. They told me that you could theoretically drop a coffee in there and it'd be okay thanks to that filtration, although I'm sure they wouldn't recommend trying it if you can help it. Under normal conditions, they expect that the coolant will last for about 15 years, as compared to the two-phase coolers that are available now that use evaporation that need topping up every two years because they're actually losing the coolant. And when the time comes for the solution to be recycled, the solution can actually be reconstituted with a simple dialysis. You don't even need to drain it and replace it. On the show floor here, they're trying to attract media companies with render firms that need massive GPU horsepower. A full-size tank of one of these can contain 144 Xeon render blades with GPUs. And with the stuff that NVIDIA has been showing off with photogrammetry and AI digital twin simulations, it's becoming ever more important for even smaller outfits that have access to that kind of compute. If the TDP rumors are true of NVIDIA's upcoming RTX 40 series, AKA Ada Lovelace, then achieving that will come at a significant cost to upgrade existing server racks. And that's to say nothing of the environmental impact traditional setups will have, not just running, but cooling all of that extra hardware. It's unorthodox, but it might just be a crazy like a fox kind of situation that makes more sense the more you think about it. Maybe I can convince Linus to submerge our server room so we don't have to stop filming every time the door opens. And maybe I can convince you to hear about our sponsor. MSI. MSI's back to school sale is on now. Looking for a new laptop for next semester? They got those. Or what about a desktop PC that is totally for school and not for gaming, mom, I swear? Well, you're covered there too. And if you're into building your own PC, they even have components on sale. MSI is also doing a glean giveaway where you can win sweet prizes, like a full blown gaming desktop or MSI GeForce RTX 3080 Ti gaming X trio graphics card. You can find out more about MSI's back to school sale and how you can win these prizes in the link below. Thanks for watching guys. We don't typically cover SIGGRAPH, but this year we felt we almost had to. For more server room shenanigans, go check out our end game storage solution of 270 hard drives. Oh right. I guess that means that it can't be submerged. Oh well.