All about RAM | Definition, Uses, Importance,Types of RAM?

RAM

Contents:

1. What is RAM?
2. What are the types of RAM?
3. When was RAM invented?
4. What are the important types of RAM?
5. What is RAM used for?
6. What items are stored in RAM?
7. Why is RAM so Important?
8. Pros and Cons of RAM?

What is RAM?

    In simpler words, RAM is the same how we can access any type of information in Google without affecting previously accessed information, in the same way in RAM you can randomly access your computer’s memory without affecting the previous bytes.

    RAM is the most important component in any hardware for Computers to even Gaming devices. Just as how food is important for humans to consume every day to be stronger and not lethargic, RAM is the same for these devices, because not having enough of it would make your system or application run slower.

• RAM stands for Random Access Memory

What are the types of RAM?

There are mainly two types of RAM are available in the markets:

1. SRAM(Static RAM) and,
2. DRAM(Dynamic RAM).

The most commonly used RAM in today’s devices is SDRAM (commonly known as synchronous dynamic random access memory).

1. Static RAM: SRAM (Static RAM) consists of circuits that retain the information until the time the power is applying. So, as there is no power, and your information is not retaining on your CPU. This form of RAM requires big-budget but on the other hand, is faster and requires less power than DRAM. These memories are used to build Cache Memory (faster memory). They are used in CPU caches, hard drive caches, and digital to analog converters.
2. Dynamic RAM: DRAM is the most common type of RAM used in today's world. You might not even know but you've been using DRAM in your PCs and gaming devices. It is based on a MOS(metal-oxide-semiconductor) technology.

When was RAM invented?

    Did you know that the year when India and Pakistan became independent nations and when Ferrari began its production of sports cars, it was the same year 1947 when the first practical form of RAM (William's Tube) invented?

What are the important types of RAM?

• FPM DRAM: (Fast Page Mode Dynamic Random Access Memory) It is the original form of Dynamic Memory, which does the waiting for the whole process and gives you speedy access to data in the same row/page. Its maximum rate of transfer to the L2 cache is about 176 Mbps.

FUN FACT: page-mode memory works by removing the need for a row address if the information is being located in any previous rows.

• EDO DRAM: (Extended data-out dynamic random access memory) Conversely to FPM, this type of DRAM starts locating the address of the next bit without waiting for the processing of the first bit. It continues its processes without wasting time on the other bits. The maximum transfer rate to L2 cache is approximately around 265Mbps.

FUN FACT: EDO RAM is 5% faster than Fast Page Mode.

• SDRAM: (Synchronous dynamic random access memory) Synchronous, as the name suggests, synchronizes its clock speed with the CPU's optimization speed. This eventuality gives a raise in the number of instructions given to the processor making it easier for the comparison of bus speed. The maximum rate of transfer to L2 cache is more or less 528 Mbps.

FUN FACT: SDRAM is about five percent faster than EDO RAM and is present in its most common form in PC's today.

• DDR SDRAM: (Double data rate synchronous dynamic RAM) is similar to SDRAM except for the fact that it is has a higher frequency, which means it is twice as fast. The maximum rate of transfer to L2 cache is more or less 1,064 Mbps (for DDR SDRAM 133 MHZ). The up-gradation of DDR into DDR1, DDR2, DDR3, DDR4 represents as generations and is differentiated based on the number of power consumption varying transfer rates.

FUN FACT: The bandwidth of DDR increased several folds from 1GB in DDR to 16GB in DDR4.

• Credit Card Memory/ Flash Drive Memory: You might have come across a USB drive at least once in your life if you are a 20th-century person. Credit Card memory is nothing, but a USB Flash drive, which we use.

FUN FACT: Credit Card USB Memory Sticks are available in capacities from as low as 128Mb to as high as 64Gb.

• VRAM: Video RAM, also known as multiport dynamic random access memory, is used in video games and consoles. Did you know you could access the Video RAM from two different passages(ports)? By having two access ports, the CPU and the graphics can access the RAM at the same time. VRAM is located on the graphics card. VRAM allows developers to store their dApp data off-chain. Hence, using caching in-use data of EOS RAM proves cryptography in the latest version of the file. Another interesting and fun point of VRam is it has the potential to reduce EOS RAM costs.

FUN FACT: VRAM claims to solve the blockchain scalability issue

What is RAM used for?

    In a brief idea, RAM provides quick access to read and write of a storage device. It needs to be imagined as an office file that stores important documents and is accessible when we need to. The datum that we are using now, is in RAM. Hard disk has speed and rotation of its disk of about 4500 to 7200rpm, so faster the speed of rotation, higher is the rate of transfer. But it becomes hotter and hence RAM proves to be a much faster accessible memory.

What items are stored in RAM?

    Random Access Memory is volatile. By being volatile, it means that the computer can store data or any information until the time there is a supply of power. But as soon as the power supply goes off, the entire stored data is erased. When we restart the computer the Operations System and other applications are reloaded into the RAM through some external source.

    Random Access Memory can't store data that stays in the same state for a long time. RAM is a short-term memory that focuses on at-the-moment work, but it can keep only a limited number of data to view at any one time. When random access memory is filled up, then the information can be accessed on the hard drive, since it can store permanent data.

    In a RAM, since the information can be accessed at random, hence, it's access time is much faster, but it consumes a lot of power because it requires power to store data/information. It stores data that needs to be accessed by the CPU or computer later on.

Why is RAM so important?

    RAM is very important. The more RAM your desktop contains, the easier its job becomes, and the computer runs faster. If there is not enough amount of RAM in your computer then it becomes difficult to transfer data and this event eventually damages the computer’s performance. RAM also acts as a helpful memory to the system’s support software.

Pros and Cons of RAM

Pros:

1. Peaceful Operations: RAM does not contain any movable parts and hence, its operation is carried on silently.
2. Power Profitable: RAM uses less power than hard disk drives and hence proves to be power profitable.
3. Speed: It is the fastest storage medium.

Cons:

1. Volatile: Once the power is cut off, then the data is lost and it is no recoverable at any cost unless it has another backup storage.
2. Limited Space: The cost of RAM per bit is high, hence any hardware device like computers, desktops, etc don’t use much of it.

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