WHAT IS A RAM?
RAM(random access memory) is the primary storage or the temporary storage of a computer, I call it the working area of the processor, so here's an example, If you are working in a room, and if you want to take a file, you have to walk to the cupboard every time. So, instead of walking every time, you kept the important files in the drawer of the desk you work, and it saves your time and is also convenient. And the same applies to RAM, the storage drive is the cupboard and the drawer in the desk is the ram installed on the motherboard. If you open a file, an app, or software, anything you open from your hard drive, first it will be loaded into the RAM, after loading the data onto the RAM, the CPU can do the processes you command. And the read/write speed of the RAMs are way faster than the storage drives. RAM is stored on the motherboard in modules, called DIMM.
DIMM (Dual Inline Memory Module)is a dual independent module with pins peripheral down on each side. It has either 168,184,240 or 288 pins.
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| a RAM with the pins on the right(golden strips) |
And the DIMMs are installed on the memory slots on the motherboard. A motherboard can have a various number of memory slots. Most of the motherboards will have between 2-4 memory slots.
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RAM slots on a motherboard
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Coming to app management, If you open 5 apps, and that is loaded into your RAM, If the RAM reaches its maximum capacity, and want to open another app, the RAM force-shutdowns the first or unused app which was loaded into the memory. And there is a myth that The higher the RAM your computer has, the speeder it would be, as I said it is just a myth, the more RAM you have, you can switch to apps/browser tabs fast and without any reloads/relaunches, It helps a lot if you multitask. The RAM needs a constant electric supply. And if the power is off, the data will be erased. There is a type of RAM called dynamic RAM or DRAM.
DRAM is a memory that contains capacitors. A capacitor is like a small bucket that stores electricity, and it is in these capacitors that hold the bit of information such as 1 or 0 because that's how computers read data, which is 1s or 0s. And because DRAM has capacitors, they have to be refreshed with electricity constantly because the capacitors do not hold the charge for a long time, they leak constantly. And this refreshing is where the name 'dynamic' comes. The capacitors have to be dynamically refreshed often, or else they will forget the information that they're holding.
SDRAM(Synchronous DRAM) is another type of RAM which is used in the RAM DIMMs today. It also has capacitors like DRAM, but speed is the difference.
TYPES OF RAM
Many of you could have noticed the term DDR from the pictures shown. The term means Double Data Rate, First know about SDR, which elongates Single Data Rate, meaning, it can only send one signal per clock cycle. And as you know, DDR can send twice the amount of signal than SDR.SDRs are not in use now.
Generations of DDR
- DDR(2002)
- DDR2(2004)
- DDR3(2007)
- DDR4(2014)
- DDR5(2020)(Not available for consumer-grade use till now)
The main difference between these is the speed. There is also a version called LPDDR(LPDDR3&LPDDR4), which means low-powered DDR. It is mostly used in laptops because of the low power consumption and high performance, which improves the battery life.If you take the best DDR3 RAM and the least best DDR4 RAM and compare, the chances of getting the same performance are rare. So that means the difference between the versions is huge.
Here are a few facts/information about DDRs :
- The maximum memory storage of DDR3 is 16 gigabytes, but DDR4 has no limit.
- The disadvantage of DDR memories is the constant need to upgrade hardware due to incompatibility reasons
CONCLUSION
- RAM is the primary memory of the computer, on which the processor work.
- It is faster than the storage drives.
- Everything you open gets loaded onto the ram for the processor to work.
- RAMs are installed onto the ram slots with DIMM
- If you multitask a lot, higher RAMs are advised
- SDRAM is faster than DRAM
- Double Data Rate RAMs can send two signals in a single clock cycle
- The generations of DDR rams are DDR, DDR2, DDR3&DDR4
If you have any questions, suggestions or feedback, comment below.