WEBVTT

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Sapphire was the first major PC component manufacturer to mass produce a

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vapor chamber cooled graphics card when they released the 3870 Atomic Edition

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back in 2008 they claimed Vapor Chambers

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would deliver significant improvements in cooling performance versus

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traditional designs that used solid metal or heat pipes but what the heck is

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a vapor chamber do we go into one at 20 past the 16th hour of each day or am I

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just completely off base here all right sorry with the bad joke thankfully

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behind us let's kick off the helpful part of this video with how a heat pipe

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works because it's actually pretty darn similar to a vapor chamber a heat pipe

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is a vacuum sealed metal tube hey I said

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the bad joke is behind us do it right a vacuum sealed metal tube that contains a

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working fluid that changes from liquid to gas when heat is applied at one end

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of the tube this heated gas moves quickly to the other end where it

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condenses or turns back into liquid then

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via a wick material usually centered metal back to the end with the heat

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Source this design allows heat pipes to transfer heat much more efficiently than

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a solid piece of metal and they have the added advantage of being much lighter on

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top of that modern heat pipe designs perform really well in any orientation

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even upside down that's why most high performance CPU or graphics card coolers

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use heat pipe technology in some way these days but heat pipes do have some

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limitations they only transfer heat in One Direction Direction not even

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acknowledging that one and their thin

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round shape means that they are physically difficult to get close to a

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very small heat Source there are a couple of solutions such as embedding

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them in a solid chunk of metal to spread the heat out to the connected pipes but

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then we're relying on the relatively inefficient heat transfer of copper we

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can get heat directly to the heat pipes by flattening them out and putting them

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right up against something but now due to the sheer size of our heat pipes

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again and the size our heat Source we can only connect a handful of heat pipes

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if only we had something that could be used in high heat flux applications like

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on a CPU that could spread that thermal

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energy out incredibly efficiently so we could use traditional fins or even heat

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pipes to spread the heat even further that would enable efficient operation of

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larger heat sinks than before and oh snap the topic of this video I'm talking

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of course About Vapor Chambers a vapor chamber much like a heat pipe is is made

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of a vacuum sealed flat metal structure

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that contains a working fluid that changes from liquid to gas when heat is

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applied anywhere on its surface this heated gas moves quickly throughout the

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inside of the vapor chamber where it finds somewhere cooler than its boiling

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point and condenses then travels via a wick material back to the heat Source a

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couple of subtle differences there the most important of which is a vapor

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chamber's phenomenal ability to spread Heat out in any direction up to 700

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watts per ctim squared can be spread out they use a series of internal posts to

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keep them from collapsing remember there's a vacuum inside and they're

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manufactured for everything from mundane stuff like cooling down a PC all the way

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to specialized designs that can be as huge as they want or as thin as .5

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millimet according to Wikipedia although the thinnest I could find was 1.5 millim

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from celsia Technologies and they can be deployed in like outer space sounds

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awesome right why not use them on everything well I mean they are super

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cool okay that one was my fault but they're also really expensive compared

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to heat pipes so you'll only really find them on premium products like highend

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graphics cards or check out this seamless sponsor transition kids this is

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how it's done or on The Cooler Master V8

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GTS CPU heat sink which uses a combination of dual 140 mm cooling fans

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aluminum fins copper heat pipes and a horizontal Vapor chamber to achieve its

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impressive 250 watts of cooling capacity

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and all of that while being almost as sexy as yours truly which may not be a

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point in its favor now I mentioned that it uses horizontal heat pipes which

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implies that there may be vertical heat pipes and in fact there are for some

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more reading on horizontal versus vertical heat pipes check out the link

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to the appropriate article on CM University in the video description it

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gives a great explanation of the different ways Vapor Chambers can be

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used for CPU cooling thanks Cooler Master for sponsoring this episode as

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fast as possible thanks to the audience for putting up with the actual

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surprising density of bad jokes in this video like this video if you liked it

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and please do share it if you enjoyed it dislike it if you disliked it so we can

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improve for next time leave a comment if you have any great ideas for future

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episodes as fast as possible and as always don't forget to subscribe