closed loop coolers, blower style fans,
heat sinks the size of a small child. PC enthusiasts have been looking
for ways to keep their rigs from turning into little mini ovens or large ovens as
it were for a very long time. And even
people who aren't tech heads have had to fight smartphones, game consoles, or
even televisions that get too hot. But
while there's plenty of discussion online about how to set up the most
effective cooling solution, a question you don't often see asked is why the
heck do our electronics heat up so much in the first
place? Okay. Well, before we dive into the specifics, it's important to
understand one of the fundamental laws
of the universe that ultimately causes heat generation, not just in computers,
but in everything from car engines to light bulbs. I'm talking about the
second law of thermodynamics. And while
there are a bunch of smart guy sounding ways to state the second law, for the
purposes of this video, it's pretty easy to understand. Whenever energy is used,
some of it becomes waste heat. Now, we
could just say that since electronics use energy and therefore generate waste
heat, they need to be cooled and end the episode there. I mean, I'm feeling kind
of hungry. Lunch break, right? But we're all about viewer satisfaction here at
Tequicki. So, let's dive a little deeper. If you watched our previous
episode about motherboard components right up here, you'll remember that
nearly all electronic circuits feature resistors to limit the flow of current
so that the sensitive parts of your system like your processors and RAM
modules get the correct amount of power since too much can cause them to
function incorrectly or even damage them. And this energy that gets resisted
has to go somewhere. So, it ends up as heat that needs to be dissipated. And
with as many resistors as there are in modern electronics, that heat adds up
pretty quickly. But what about the hottest parts of your computer? Your
central processing unit or CPU and your
graphics processing unit or GPU? Well, processors are made up of
millions or even billions of tiny
transistors which switch on and off. you
know, zeros and ones to run programs.
And since modern processors run through billions of cycles a second, these
transistors can generate lots of heat
due to the extra current that they use while you're putting a load on your
processor, such as while gaming or video
editing or compressing files. The heavier the task you're running, the
more of them need to be switching. And this is all happening within a space of
a few square centimeters, necessitating
those hunks of metal or heat pipe type
coolers that come directly into contact
with the CPU or GPU package carrying
heat away usually to a large metal
radiator structure to be dissipated into the surrounding air. Again, usually by
fans. And this is interesting. Even if
you're only using your computer for things like Facebook and Microsoft
Office, you still won't get very far
without a cooler as some current is
always running through your processor. This is called leakage, even when it's
idle. So, seriously, don't try it unless your goal is to start another one of
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channels, leave a comment with video suggestions, and subscribe. Yeah, do it.