Different Types of RAM (Random Access Memory) Explained

Hi, there in these tutorials I will be teaching you the Different Types of RAM (Random Access Memory) Explained. Now before we start with this let us discuss, we should know that what does RAM stands for before we know what is RAM.

So the RAM stands for is “Random Access Memory”.

In this memory, the information stored in this type of memory is lost when the power supply of the computer or laptop is turned off.

The information stored in the RAM can be verified with the help of BIOS. Generally known as main memory, temporary memory, cache or volatile memory of a computer system.

There are three basic Different Types of RAM.

  • Dynamic RAM
  • Static RAM
  • Non-volatile RAM

Dynamic RAM | Different Types of RAM

As the name DRAM, or dynamic random access memory, indicates, this form of memory technology is a type of random access memory.

Each piece of data is stored in a small capacitor inside the memory cell. The capacitor can be charged or discharged and this provides the two states, “1” or “0” for the cell.

Due to the leakage of charge within the capacitor, it is necessary to update each memory cell periodically. This update requirement gives rise to a dynamic term: static memories do not need to be updated.

The advantage of DRAM is the simplicity of the cells: it requires only one transistor, compared to the usual static RAM and about six in one SRAM cells. Due to its simplicity, DRAM costs much less than SRAM and can provide much higher levels of memory density.

However, DRAM also has disadvantages, and as a result, most computers use DRAM and SRAM technology, but in different areas.

In view of the fact that power is required for DRAM to hold your data, this is called volatile memory. Memory technologies like Flash are non-volatile and retain data even when the power goes out.

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Static RAM | Different Types of RAM

Static RAM uses a completely different technology. S-RAM retains the stored information only while the power supply is on. Static RAMs are more expensive and consume more power. They have a higher speed than D-RAM. They store information in Hip-Hope.

In static RAM, a form of flip flop contains each bit of memory. A flip-flop for a memory cell needs four or six transistors along with some wires, but it never has to be upgraded.

This makes static RAM significantly faster than dynamic RAM. However, because it has more parts, a static memory cell takes up much more space on a chip than a dynamic memory cell.

So you get less memory per chip and that makes static RAM much more expensive. Static RAM is fast and expensive, and dynamic RAM is less expensive and slower.

Static RAM is used to create the CPU speed-sensitive cache, while dynamic RAM forms the largest RAM space in the system.

Non-volatile RAM | Different Types of RAM

The latter type of RAM is not volatile. This is the most unusual type of RAM due to the fact that it must have its own power supply connected to the chip itself.

This makes the chip bulkier and needs to be replaced more often. However, this RAM has certain uses. In situations where the data is absolutely essential, such as in certain military and scientific applications, non-volatile RAM can interrupt the power of a computer unit, but reboot with all running programs intact.

Computer Memory Types

Different Types of RAM (Random Access Memory) Explained

Identify RAM Specification

Many types of RAM have emerged over the years and it is often difficult to tell the difference between them in terms of performance and to recognize them.

This article tells you a bit about each type of RAM, what it looks like, and how it performs.


FPM RAM, which stands for Fast Page Mode RAM√É,, is a type of Dynamic RAM (DRAM). The term “Quick Page Mode” comes from the memory capacity of being able to access data that is on the same page and can be done with less nostalgia.

Most 486 and Pentium based systems from 1995 and earlier use FPM Memory.

Different Types of RAM


EDO RAM, which stands for “Extended Data Out RAM”, appeared in 1995 as a new type of memory available for Pentium-based systems. EDO is a modified form of FPM RAM that is commonly known as “Hyperpage Mode”.

Extended Data Out refers to the fact that the data output drivers on the memory module do not turn off when the memory controller removes the column address to start the next cycle, unlike the FPM RAM. Most of the early Pentium-based systems used EDO.

Random Access Memory


SDRAM, which is short for Synchronous DRAM, is a type of DRAM that runs in synchronization with the memory bus. Starting in 1996, most Intel-based chipsets started to support SDRAM, making it a popular choice for new systems in 2001.

Random Access Memory

SDRAM is capable of running at 133MHz, which is about three times faster than FPM RAM and two times faster than EDO RAM. Most Pentium or Celeron systems purchased in 1999 have SDRAM.


DDR RAM, which stands for “Double Data Rate”, which is a type of SDRAM and first appeared on the market around 2001,

but it didn’t catch on until around 2001 when mainstream motherboards started to support it.

The difference between SDRAM and DDR RAM is that instead of doubling the clock rate, it transfers data twice per clock cycle, effectively doubling the data rate.

DDR RAM has become mainstream in the graphics card market and has become the memory standard.

Different Types of RAM
Random Access Memory


DDR2 RAM, which stands for “Double Data Rate 2”, is a newer version of DDR that is twice as fast as the original DDR RAM.

DDR2RAM came out in mid-2003 and the first DDR2-compatible chipsets came out in mid-2004. DDR2 still has a double data rate just like the original DDR, however, DDR2-RAM has modified signaling that allows it to achieve higher speeds with more immunity to signal noise and crosstalk between signals.

Different Types of RAM
Random Access Memory


RAMBUS RDRAM is a type of RAM of its own, it came out in 1999 and was developed from traditional DRAM, but its architecture is totally new.

The RAMBUS design provides smarter access to RAM, which means the drives can pre-fetch data and free some work from the CPU.

The idea behind RAMBUS RAM is to get small data packets out of RAM but at very high clock speeds. For example, SD-RAM can get 64 bits of information at 100 MHz, while RAMBUS RAM would get 16 bits of data at 800 MHz.

The RAM RIMM was generally unsuccessful as Intel had a lot of problems with timing the RAM or the signal noise. RD RAM appeared on the Sony Playstation 2 and Nintendo 64 game consoles.

Different Types of RAM
Random Access Memory


  • What are the Different Types of RAM?

    The information stored in the RAM can be verified with the help of BIOS. Generally known as main memory, temporary memory, cache or volatile memory of a computer system.

  • What are the types of RAM?

    Dynamic Ram (DRAM) and Static Ram (SRAM)

  • What is RAM full form?

    Random Access Memory.

  • What is a RAM used for?

    RAM is used to temporarily store data for quick access by the CPU. When you turn off your computer, the data in it will be lost.


We are discussed Different Types of RAM -This type of memory also called Main Memory or RAM (Random Access Memory), is only used for temporary data storage. When you restart a computer, it usually clears the memory completely. Memory would not be a good place to store data for later, such as files and programs. We’ll discuss and cover in the Next Article – Computers store long-term data in a different type of memory: external memory or secondary storage, such as a hard drive or USB drive.

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