Gadgetory

have you ever had thermal issues with your computer and thought wow if only I could get a bigger fan I might be able to put my side panel back on well if that's the case we've got the fan for you and uh this thing is powerful synergy allows you to share your mouse and keyboard between multiple computers at once check it out now at the link in the video description so listen right here is the delta p FR o 9 1 2 x h e ad let's let's call it the blow e Metron and at $55 it is the most expensive blow I've ever gotten I mean this thing is almost four times the cost of even a high-quality normal consumer fan so can it possibly deliver four times the performance well funny you should ask try more like seven times the performance ramping up to a whopping eleven and a half thousand rotations per minute in open air blowing Mitrano chased a Goering 90 liters of air every second but how would we actually demonstrate what that means in real world terms this thing not only spins faster than the engine of my Civic it probably has more torque too if you were to get your finger in this thing well to put it lightly you're gonna have a bad time Oh disgusting that's what happened using a finger lady oh we finally stopped it jammed full of Karen Soule done with all of that blowing power we started to wonder about what are the real-world applications so here's one if you're really crunched for space in your case at 37 millimeters tall the super tiny Noctua NHL 9 eye is about as small form-factor as you can get for a heatsink but of course that comes with some trade-offs mainly that you aren't supposed to use it on a high TDP that is the thermal output CPU but there's the way it suggests in the manual and then there's the Linus tech tips way so can this heat sink cope with a fully clocked core i7 7700 K well actually it's a surprisingly resilient little bastard and was able to keep our 7700 K running at full turbo speed under synthetic load though it wasn't exactly comfortable at a maximum of 97 degrees Celsius fortunately though our CPU won't have to run hot for long since good old blowy mature on is coming to the rescue but how much of a difference does a 7 x increase in air flow make for real-world cooling well Alex here is a great big cooling nerd so the first thing we're gonna do is look at it from a theoretical standpoint what is it that makes a heatsink remove heat from a CPU and why does a bigger better fan cool it more to put it simply there are three things that affect how much heat you can remove from your processor the surface area that is responsible for cooling the heat transfer coefficient of the process and the temperature difference between the CPU and the surrounding air now it's intuitive that increasing the amount of air over a heatsink will make it cooler think about putting your hand out of the window of a car you go faster you cool more but how much can upping the air flow help your cool so to figure out how big of the difference this is going to make we have to calculate the convective heat transfer coefficient of air or how much heat air can take away from an object which is approximately equal to this formula where H is the heat transfer coefficient and V is the velocity of the air so we know the knock to a fan pushes air at about 1 meter per second and plopping that into the formula gives us an H value of 19.5 while blowing Metron is air at 3.6 meters per second giving us an H value of 25.8 but - it's pushing the air three point six times faster why does it only make a 25% difference to cooling well you see I was masking the other day and this one frigging square root over the velocity kept kicking my ass you get diminishing returns the faster the air moves so bringing it back to the real world then can this be confirmed with the blowing Mitrano well with it strapped to our NHL 9i under full Odin I 264 the CPU maxed out at 73 degrees Celsius leaving us lots of room for overclocking by the way this also amounted to about 30% cooler than the stock fan close to our expected temperature reduction of 25% and really the LM do you thermodynamics and precision pizza heating department considers anything within an order of magnitude a compelling victory of course that compromise some of the space savings with our heat sink leading us then to another question this video really turned into kind of a voyage of discovery what's better having a cooling solution that's 3/4 fins or 3/4 a fan well we tested it and in this situation the fan actually still wins in cooling performance per height although it isn't all hunky dory strapped one of these guys to your heat sink you're off to the races with a chilly CPU first of all there is power delivery that stock knocked within sips 0.14 amps at full load the blowing Mitrano on the other hand well you probably don't want to attach this thing to a fan header on your motherboard since it draws a whopping four-and-a-half amps at full load which is nearly enough to overwhelm this bench power supply and of course there's also the noise the knock to a fan puts out 24 decibels maximum which is quieter than someone whispering library compare that to the 75 decibels of the Delta which is more comparable to an alarm clock synergy is a software download that solves the problem once and for all of having two keyboards and two mice on your desk if you have more than one PC it lets you share a single mouse and keyboard between two or even more computers seamlessly so you'll no longer get confused about which one is connected to which they offer a basic and pro option with a one-time payment for lifetime access and the features include clipboard sharing between the computers dragging and dropping files between the computers the ability to set up hotkeys and more and the best thing is that synergy is cross-platform whoa PC Mac and Linux so use our link in the video description to get up to 50% off synergy today so thanks for watching guys if you just like this video well you must be in the like banana protection league or whatever the case may be because we pay ravaged to that thing but if you liked it hit that like button get subscribed maybe consider checking out where to buy the stuff we featured in the link in the video description and also down there we've got our merch store which has cool shirts like this one banana and carrot chunks not included as well as our community forum which you should totally join