How Do CPUs Use Multiple Cores?

six cores eight cores 40 cores okay well maybe not the last one but high CPU core counts are a major selling point for computers and even other electronics these days whether you're shopping online or talking to a worker be at your local big box store and the idea behind it is simple higher core counts suggest more Pawa kind of like impressive-looking horsepower numbers on a car but is this always the case well if you like many tech quickie viewers are a PC gamer you've probably seen advice around the web or from friends that super high-end CPUs with many cores or hyper-threading on something like a core i7 won't help you much if at all in games but why is that with the demand that current titles put on the hardware why are people averse to spending more on a more powerful CPU well the answer lies in a concept called parallelization which means splitting a program's workload across multiple processing course so a computer can work on two different parts of the same load at the same time for example let's say you want to know what five times four times three times two is a single core CPU would first multiply five times four to get 20 then multiply that time three to get 60 and so on and so forth however a dual-core CPU could assign five times four to one core and three times two to the other solve both problems at the same time and multiply the results together effectively saving time since it doesn't matter what order you execute the instructions in since you're just telling the CPU to multiply numbers this math problem is easy to paralyze now although this is a painfully simple example it does illustrate how certain programs can take advantage of multiple CPU cores because they require lots of number crunching that can be easily split up applications for video editing encryption file compression and even scientific research such as weather modeling do lots of calculations that can be parallelized easily also computers GPUs are designed for parallel computing since the same idea holds true for rendering 3d graphics in a game so you can learn more about that in this video but Linus if my graphics card is designed for parallel processing why shouldn't I also be getting a CPU with tons of course well the thing is that your GPU often doesn't handle much else other than pushing out frames to your monitor other important aspects of games such as artificial intelligence responding to inputs and telling the GPU what to render are still handled by the CPU because of the complexity involved in processing things like AI and other forms of game logic and the fact that many of these code instructions for these types of things must be done in a specific order or in reaction to the gamer they're much harder for programmers to paralyse and split the workload especially as many current game engines aren't designed from the ground up to take advantage of multiple cores that said though your mileage may vary depending on what game you're playing some games due to variations in the processes the CPU is handling are more CPU bound than others and can benefit slightly from additional course and since getting games to take advantage of lots of course is a bit of an unsolved problem in the industry work is ongoing to try to figure out how to make higher end games easier to parallelize which could ultimately result in cooler more immersive experiences but for now if you're just using your PC to game getting if anything above I'd say about a 4 core is probably overkill and you're better off focusing your resources on well getting cores that perform well individually for one thing and on other components of your system speaking of individual performance do you wish your internet connection could perform better well tunnel bear VPN is not the solution to that no a VPN does not make your internet faster but what it does do is it makes it so that you can tunnel your internet to a different country up to 20 different ones with tunnel bear and use online services and websites as though you are browsing from that country they've got easy-to-use apps for iOS Android PC and Mac as well as a Chrome extension and it is as simple as choosing the country that you want to be browsing from you know like let's say there's a Content block on browsers from a particular region you're like I want to see that stuff boom you click the button tunnel bear encrypts your connection and makes it appear to all those services and websites as though you are browsing from a completely different place and they take all the nonsense out of it there's no port forwarding or DNS configuration or anything like that and they've got a top rated privacy policy - 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Channel: Techquickie

Views: 1,892,860

Rating: 4.9358091 out of 5

Keywords: intel, amd, cpu, core, i3, i5, i7, pentium, celeron, apu, a-series, amd fx, processor, computer, hyperthreading, multi-threaded, single-threaded, core count, pc gaming, parallelization, dual-core, quad-core, six-core, eight-core, athlon, sempron, xeon, opteron, extreme edition

Id: S3I5WNHbnJ0

Length: 5min 59sec (359 seconds)

Published: Fri Jun 03 2016