Hi, this is Wayne again with a topic “Different Kinds of Memory as Fast As Possible”.
You know what drives me berserk memory, I mean the word itself is fine. Actually, it’s a fun game for kids, an iconic song from Katzen without mine. I’D have a pretty hard time making these videos, but no my problem with the word memory is the confusion that it causes asked a dozen big-box salespeople, how much memory you know this computer has, and I guarantee you that, while some of them will tell you it Has 16 gigs of RAM others will report the capacity of the SSD or the hard drive instead, and therein lies the problem. You just got potentially three different answers and worse, none of them are really quite wrong.
This problem exists because most folks aren’t aware that there are so many different types of memory inside a single PC, but don’t worry we’re gon na take care of all of that. At the end of this video you’ll be correctly referring to the memory types in your PC like a champ, let’s start with DRAM what most people are referring to when they talk about computer memory, dynamic, random access memory is optimized to sit in a sweet spot where It delivers high performance and high density or capacity at a reasonable cost. Ddr3 is an example of drm and it’s all volatile memory, which means that once you cut power to it, anything stored in DRAM quickly fades away, and on top of that, this is the dynamic part of the DRAM thing.
Is it’s unable to retain data? Even while it’s powered on, if it’s not being constantly refreshed or rewritten, the good news is that dierent isn’t used for long-term storage, and most of it will be set up for your CPU or graphics processor, to use as working memory. That contains only the information needed to help them complete the task at hand and nothing more, so these characteristics are not detrimental in any way. Next up is a SRAM.
This stands for static, random-access memory, it’s a volatile storage medium, just like the RAM, but the key difference is that it is capable of delivering much higher performance and that, while it’s receiving power, it doesn’t need to refresh each bit periodically just to keep it from fading. The data will wait instead to be overwritten. Modern, high performance, CPUs use SRAM as a way to store the data who needs most right next to it for frequent, fast access, but due to its cost.
It’S typical for this cash to have a capacity of only a few megabytes. Flash memory, which is a subset of EEPROM, is the first type of memory in our rundown that is non-volatile, meaning that data is retained even when there is no power being provided to the chips. This feature comes with a significant performance reduction and a limited number of program erase or write cycles, though this is a necessary trade-off, though, because NAND flash is used to store things like the operating system, applications and other important data that can’t be erased whenever the system Is powered down in a consumer PC or device? An SSD is an example of something that uses NAND flash, but in spite of the fact that I just said it has reduced performance, it’s still much faster than a more traditional hard drive. The only drawback here is that, due to their much higher cost compared to a hard drive, typical capacities for SSD devices are tens or hundreds of gigabytes, and you know, portable devices are up to thousand gigabytes or a terabyte in high-performance computers. Then flash is also used in low-cost products like USB thumb drives, but the chips used for those are much lower performance and not capable of as many programming race cycles. Our last memory type is mechanical storage or the hard drive note.
The use of the word storage they’re, calling it memory, is actually a bit of a stretch, even though it does store data. Like the other technologies. We’Ve discussed, it’s very, very different. Hard drives use a right head to store data as a series of ones and zeros. So it’s still digital storage in the same way that you know anything else is storing this data digitally, but it’s on a magnetic recording layer on a disk called a platter that is spinning anywhere from 5400 to 7200 times per minute around in a typical hard drive. Now hard drives have been a staple of personal computers since the 60s and while they’re not nearly as fast as any of the other memory types covered here due to the physical movement required to access them, they are still going to be important for a long time.
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