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All you need to know about computer memory device - RAM - A closer look (Random Access Memory)

We all have heard about RAM (Random Access Memory, the computer primary memory device, either while buying a computer or while discussing the capacity of your PC with a friend. We see that RAM plays a huge role in every computer system. But, many of us might be unaware of this humble device which is always on its toes to help us while we easily work on our computers. Let us fill that empty space about RAM and know more about it.

What exactly is a RAM in computer?

Random Access Memory in short RAM is a sort of PC information storage/memory that can be accessed to arbitrarily; that is, any byte of memory can be retrieved without touching the former bytes. A RAM makes it conceivable to get to information in a random request, which makes it easy to locate a specific bit of information. Certain different sorts of storage devices are not randomly accessible. For instance, a hard drive and a CD will read and compose information in a sequential request. The mechanical outline of these gadgets recommends that information access is back to back. This implies the time it takes to identify a specific bit of information can differ hugely relying upon where it is situated on the disk.

What does ram do for your computer?

If we look at how does computer memory work, RAM are utilized as part of the computer as a primary memory. RAM is viewed as unpredictable memory hence the name volatile memory, which implies that the data put on this memory is lost when there is no power supply. Along these lines, RAM is utilized by the central processing unit (CPU) when a PC is racing to store data that should be utilized rapidly, however it doesn’t store any data on a permanent basis.

Today, RAM use integrated circuits to store data. This is a moderately costly type of storage and the expense per unit of storage is much higher than for gadgets like a hard drive. In any case, an ideal opportunity to get to information is so rapid for RAM that speed exceeds the cost. A PC subsequently utilizes a specific measure of RAM for quick access, temporary data storage and a much bigger measure of non-random, permanent mass data storage, similar to a hard drive. For instance, an ordinary PC may have two to eight GB (gigabytes) of RAM while the capacity limit of the hard drive can be a few hundred GB or even one TB (terabyte).

What are the computer memory types ?

There are many different types of RAM available. It is said that it doesn’t matter what type you use when compared to how much of RAM capacity you have. However, with growing technology the earlier versions will no matter what, slow down the system.

Here are the broad classifications of RAM available

SRAM : Static Random Access Memory

DRAM: Dynamic Random Access Memory

The two sorts of RAM contrast in the process they use to hold information, with DRAM being the more regular sort. As far as accessibility rates, SRAM is quicker. DRAM should be refreshed a great many times each and every second while SRAM does not need to be invigorated, which is the thing that makes it quicker than DRAM.

DRAM boasts access times of around 60 nanoseconds, while, SRAM can give access times as low as 10 nanoseconds. Regardless of SRAM being quicker, it’s not as normally utilized as DRAM since it’s more costly. Both sorts of RAM are unstable, implying that they lose their substance when the power supply is killed.

Due to its cheap cost price and availability, DRAM is used very commonly in all sorts of computers available. This DRAM is further classified as

  • SDRAM - SDRAM (synchronous DRAM) is a bland name for different sorts of Dynamic Random access memory (DRAM) that are synchronized with the clock speed that the microprocessor of the system which is streamlined for. This tends to expand the quantity of jobs that the processor can perform in a given time. The pace of SDRAM is appraised in MHz as opposed to in nanoseconds (ns).


  • DDR2RAM - Double Data rate synchronous dynamic Random access memory2 invented in 2003 is a class of memory integrated circuit utilized as a part of system storage. It accomplishes more prominent transmission capacity than the first single-information rate SDRAM  and DDRAM by data exchange rates running on the internal clock which itself is running at the speed of half the data bus. This literally is twice as fast as the original DDRAM with transfer rates up to 1067MTps.


  • DDR3RAM - With the invention of DDRAM2, it took no time in coming out with the latest model of RAM called DDRAM3 which eventually cut the data exchange rates running on the internal clock time to half of DDRAM2, with data transfer rates up to 2,135MTps. This model reduced the power usage by processor significantly.


How much RAM do I have ?

After reading so much of info on RAM we all need to check how much RAM our system has? For that, follow these simple steps for checking computer memory.

1.     Go to control panel and select “System” tab and you will see a new screen which gives you all the info of your  RAM details.

2.     Know your OS if its 32 bit OS then system can support up to 4gb RAM and if it’s 64bit it can support up to 128GB RAM


How do I get more RAM ? How do I upgrade my RAM ?

1.     Check whether your system needs a RAM up gradation using Task Manager. Once you are there click on performance Tab and check for the available physical memory, if it is zero then it’s time to upgrade

2.     Know what kind of RAM works well with your current Motherboard and decide on the model accordingly

3.     Once you buy the RAM, by carefully removing the old one in the CPU cabinet replace the new one and reboot the system to see whether the new RAM is recognized by the system

4.     If it is recognized you are good to go and if not take help of professionals.