Cache Memory Explained

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In this video, what is cache memory in CPU, is explained.

So, in this video, we will see, what is Cache memory in computers, what is the importance of this cache memory, what are the different levels of cache memory that we find inside our computers or laptops and what is the typical size of this cache memory in our computers and laptops.

Cache Memory:
Cache memory is the small size of RAM inside the processors. This cache memory is SRAM (Static RAM) unlike the DRAM (Dynamic RAM) which we find in normal RAM. This SRAM is quite fast compared to DRAM.

In computers, we find different levels of cache memory.
Level 1 Cache:
This is fastest among all Caches available in the computer processors. But very small in terms of the size. Typically few KBs.
It is embedded inside the CPU itself and all the cores inside the CPU have their individual L1Cache.

Level 2 Cache:
This L2 cache could be inside the CPU or it could be outside the CPU. It could be shared among all the cores or it could be individual for each core. It is larger in size compared to L1 cache but it is slow in comparison to L1 cache.

L3 Cache:
This L3 cache is not available in all the processors, but in some high-end processors, it is available to enhance the performance of the L1 and L2 cache. It slowest among all cache memory. It is outside the CPU and shared between the all the cores of the CPU.

The timestamped link for the different topics is given below:

0:38 Different types of memory in computers

2:40 Cache memory

3:15 Different Levels of the Cache memory

This video will be helpful for all to understand, what is cache memory (CPU Cache) in computers and laptops.

#CacheMemory

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it was a brilliant presentation do not listen to the people who are criticizing you accent, you did your level best and i understood the whole concept very well !!!

rafikhan
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The other reasons L1/L2/L3 cache is smaller than RAM are power consumption and space. Since each bit in SRAM is made of a 6 transistors and 1 inverter while DRAM is at most a transistor and a capacitor(which needs to be refreshed several times in single clock cycle), SRAM draws more power. For the same reason, SRAM is much bigger in size than DRAM. Remember that L1 is collocated on the same chip as other cores in a tiny space so it must balance the space and power consumption.

johng
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I'm a native English speaker who has lived in Los Angeles, California my whole life and I had no trouble understanding at all. Great presentation - thanks for sharing!!!!

BobbyValenzuela
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After rewatching my lectures 20 something times, after this video i could understand how caches work. Thank you for your great explanation!

ea
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EXCELLENT video. Simplified but not dumbed down so much that I feel like I need to fast forward. Thank you!

MrGeeseMang
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This was the best explanation I have ever seen relating to Cache memories. I feel like I know it all now. Thank You..

sagarwedshimani
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Excellent explanation. I looked some videos regarding the L3 Cache and this was by far the best one, it should be the top of the search. Thank you.

cometothegeekside
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Thank you very much for this video.
Also loved the fact that subtitles are available.
Thank you and keep them coming!

xxyy
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Thank you.. I've gone through a few vids over the last couple of days, from simple to detailED.. this has helped me finalize all i have learnt so far ..

dubdadmattV
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This is much, much better than those two short sentences on cache memory on a Coursera course. :D Thank you so much for sharing this, you helped me understand this better!

darilietas
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That's still the best cache explaination in 2020 sept thanks

Brianmuchiri
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Brilliant explanation, I had no idea what cache memory is but now I fully understand it. Thanks 👍

olawaleolaniran
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At initial stage, I got noting. But as the video moved furthur, I get what u were tryna explain. Excellent Job !!

ajinzrathod
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I liked the way you explained it, I never knew what the cache memory was. Thanks!

jibm
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Very nice bro! You added subtitles. Thanks a lot xD

albatros
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Most concise explanation I've seen so far. Thanks!

LigninAndHeft
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Pure professional explanation, thank you dude

butterfly
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Thank you so much, best simple explanation of cache memory I’ve found.

yt_chill
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Thank you for this rocket speed tutorial!

michaelrandall
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Thankuu so much🙏, I've searched so many videos but couldn't understand cache memory...this is the simplest video I've ever found❤️

areeshakhan