1 00:00:00,320 --> 00:00:06,520 closed loop coolers, blower style fans, 2 00:00:03,760 --> 00:00:12,320 heat sinks the size of a small child. PC enthusiasts have been looking 3 00:00:09,840 --> 00:00:19,840 for ways to keep their rigs from turning into little mini ovens or large ovens as 4 00:00:16,080 --> 00:00:22,560 it were for a very long time. And even 5 00:00:19,840 --> 00:00:30,560 people who aren't tech heads have had to fight smartphones, game consoles, or 6 00:00:26,160 --> 00:00:32,239 even televisions that get too hot. But 7 00:00:30,560 --> 00:00:37,440 while there's plenty of discussion online about how to set up the most 8 00:00:34,960 --> 00:00:42,559 effective cooling solution, a question you don't often see asked is why the 9 00:00:40,559 --> 00:00:46,800 heck do our electronics heat up so much in the first 10 00:00:43,879 --> 00:00:52,160 place? Okay. Well, before we dive into the specifics, it's important to 11 00:00:48,640 --> 00:00:54,960 understand one of the fundamental laws 12 00:00:52,160 --> 00:01:00,160 of the universe that ultimately causes heat generation, not just in computers, 13 00:00:57,760 --> 00:01:05,920 but in everything from car engines to light bulbs. I'm talking about the 14 00:01:02,719 --> 00:01:08,080 second law of thermodynamics. And while 15 00:01:05,920 --> 00:01:13,200 there are a bunch of smart guy sounding ways to state the second law, for the 16 00:01:10,560 --> 00:01:21,119 purposes of this video, it's pretty easy to understand. Whenever energy is used, 17 00:01:17,119 --> 00:01:23,840 some of it becomes waste heat. Now, we 18 00:01:21,119 --> 00:01:29,439 could just say that since electronics use energy and therefore generate waste 19 00:01:26,880 --> 00:01:33,680 heat, they need to be cooled and end the episode there. I mean, I'm feeling kind 20 00:01:31,200 --> 00:01:38,159 of hungry. Lunch break, right? But we're all about viewer satisfaction here at 21 00:01:35,840 --> 00:01:42,799 Tequicki. So, let's dive a little deeper. If you watched our previous 22 00:01:40,880 --> 00:01:47,560 episode about motherboard components right up here, you'll remember that 23 00:01:44,720 --> 00:01:52,240 nearly all electronic circuits feature resistors to limit the flow of current 24 00:01:50,479 --> 00:01:57,280 so that the sensitive parts of your system like your processors and RAM 25 00:01:54,479 --> 00:02:02,240 modules get the correct amount of power since too much can cause them to 26 00:01:59,520 --> 00:02:08,479 function incorrectly or even damage them. And this energy that gets resisted 27 00:02:05,840 --> 00:02:13,760 has to go somewhere. So, it ends up as heat that needs to be dissipated. And 28 00:02:11,440 --> 00:02:18,720 with as many resistors as there are in modern electronics, that heat adds up 29 00:02:15,920 --> 00:02:23,840 pretty quickly. But what about the hottest parts of your computer? Your 30 00:02:20,720 --> 00:02:26,200 central processing unit or CPU and your 31 00:02:23,840 --> 00:02:33,160 graphics processing unit or GPU? Well, processors are made up of 32 00:02:29,599 --> 00:02:36,160 millions or even billions of tiny 33 00:02:33,160 --> 00:02:39,440 transistors which switch on and off. you 34 00:02:36,160 --> 00:02:42,200 know, zeros and ones to run programs. 35 00:02:39,440 --> 00:02:48,879 And since modern processors run through billions of cycles a second, these 36 00:02:45,840 --> 00:02:51,599 transistors can generate lots of heat 37 00:02:48,879 --> 00:02:57,120 due to the extra current that they use while you're putting a load on your 38 00:02:53,519 --> 00:03:00,080 processor, such as while gaming or video 39 00:02:57,120 --> 00:03:04,560 editing or compressing files. The heavier the task you're running, the 40 00:03:02,319 --> 00:03:10,400 more of them need to be switching. And this is all happening within a space of 41 00:03:06,959 --> 00:03:14,000 a few square centimeters, necessitating 42 00:03:10,400 --> 00:03:17,120 those hunks of metal or heat pipe type 43 00:03:14,000 --> 00:03:20,480 coolers that come directly into contact 44 00:03:17,120 --> 00:03:24,000 with the CPU or GPU package carrying 45 00:03:20,480 --> 00:03:26,560 heat away usually to a large metal 46 00:03:24,000 --> 00:03:33,519 radiator structure to be dissipated into the surrounding air. Again, usually by 47 00:03:29,959 --> 00:03:35,280 fans. And this is interesting. Even if 48 00:03:33,519 --> 00:03:41,040 you're only using your computer for things like Facebook and Microsoft 49 00:03:37,959 --> 00:03:44,319 Office, you still won't get very far 50 00:03:41,040 --> 00:03:46,879 without a cooler as some current is 51 00:03:44,319 --> 00:03:52,799 always running through your processor. This is called leakage, even when it's 52 00:03:50,000 --> 00:03:56,720 idle. 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