EXPLAIN BEST RAM DETAILS - WHAT IS THE RAM IN A COMPUTER ?

EXPLAIN BEST RAM DETAILS - WHAT IS THE RAM IN A COMPUTER ?


ABOUT RAM / WHAT IS  RAM IN A COMPUTER ?


RAM  stands for random Access Memory . It  is saved on the motherboard in modules which are known as Dims?  Dim stands for twin inline memory module a Dim. 

IT is a dual inline module as a result of it has two independent rows of those pins one on either side a Dim Memory module has both 168 ,184, 240 or 288 pins.  Dim is put in on the motherboard within the memory slots a Motherboard can have a numerous variety of memory slots the common Motherboard may have between 2 and four of them.

To ensure that Knowledge or program to run on a pc. It must be loaded into RAM first, the information or program is first saved on the exhausting drive , then from the exhausting drive. 

The CPU can now entry the information or run this system now a lot of occasions, if the memory is simply too low it won't be capable of maintain all the information that the CPU wants and When this occurs then another knowledge has to be saved on the slower hard drive to compensate for the low memory.

 As an alternative of the information going from RAM to the CPU it has to do further work by going again to the exhausting drive and When this occurs it slows down the pc. 

So to solve this drawback all that you must do is improve the quantity of RAM on a PC and By rising the memory extra knowledge will be loaded into the faster RAM with out the necessity of regularly accessing the slower exhausting drive, and  the result's a sooner performing laptop.  

This is the reason a PC with extra It performs faster than a PC with much less RAM. It requires fixed electrical energy to retailer Knowledge and if the facility is turned off then the information is erased.


TYPES OF RAM

ACCORDING TO THE MEMORY CHANNEL RAM CAN BE DIVIDED IN TO THE FOLLOWING CATEGORY :- 

1. SIMM       2.  DIMM      3.  RIMM


1. SIMM :-  SIMM is a SINGLE IN LINE MEMORY MODULE . Its total number of pins where either 30 or 72 we can install in this time of slot only EDO, BEDO RAM. Identification colour slot is white.


2.DIMM :- DIMM means dual in line memory module . Its total number of pins 168, we can install SD RAM &  DDR RAM. Identification colour of slot is brown.


3.RIMM :- RIMM is a popular in RAM-BUS  INLINE MEMORY MODULE. Total number of pin 184 . We can install this slot RD RAM , slot identification colour is Red  and Pink. 



SOME RAM DETAILS :


SD RAM :-

IT is a volatile memory type RAM. its total pin numberis 168. it's capcity 32 MB, 64MB, 128MB. speed 100MHz, 133MHz, 266MHz.

RD RAM:- 

This  type ram is a part of  Dynamic RAM, under volatile memory.IT's  total  number of pins 184, capacity is 128MB, 250MB, 512MB, and speed is 400MHz & 800MHz.

DDR RAM:- 

Its a some more type of  RAM, like DDR1, DDR2, DDR3, DDR4, DDR5 and now a days its update continue…..  DDR1 pin number is 184, it's capacity 128MB,256MB,512MB, it's speed 266MHz, 333MHz,400MHz.  DDR2 pin number is 240, it's capacity is 512MB, 1GB, 2GB, 4GB.  it's speed 1024MHz.  DDR type RAM is very popular naw a days in desktop /pc and laptop.

Memory Systems:

Usually three kinds of semiconductor memory are discovered on a typical system board. These embrace the system's ROM BIOS ICs, the system's memory ,and the second-level cache memory unit.

 A typical PC system board makes use of one, or two, 256KB/128KB x eight ROM chips to Hold the system's BIOS firmware. The system's memory map reserves memory places from F0000h to FFFFFh. 

These chips include the firmware routines to deal with startup of the system, the change over to disk-based operations, video, and printer output capabilities, in addition to the Energy-On Self-Take a look at. 

There are basically  two types of semiconductor  RAM used on system boards.
   
   1. STATIC  RAM  
   2. DYNAMIC RAM



1. STATIC RAM :- 

Though  they each perform the identical varieties of features.  It shops bits in such a way that may stay so long as energy to the chip is just not interrupted. 

IT makes use of IC transistors ti retailer knowledge and preserve it so long as energy is provided to the chip. Its transistors construction makes IT memory a lot sooner than ordinary  DRAM. 

All RAM techniques have the drawback to being risky,  which means that any knowledge saved in IT will probably be misplaced if energy to the pc is disrupted for any purpose. Typically, It is utilized in smaller memory techniques,  equivalent to cache and video reminiscences.


2. Dynamics RAM :-

 It requires periodic Refreshing to take care of knowledge,  even when electrical energy is utilized to the chip. Its shops knowledge bits on rows and columns of IC capacitors. 

 Capacitors lose their cost over time. Because IT units require data-refreshing operations. It is risky,  so it misplaced knowledge if energy to the pc is disputed for any purpose. However different hand RAM have the benefit of being quick,  with the potential to be written to and skim from with equal ease.


Advanced DRAM :


Each kinds of RAM are introduced collectively to create an improved DRAM, referred to as enhanced IT (EDRAM). By integrating an SRAM element into a DRAM machine, a efficiency enhancement of 40% may be gained. 

An independent write path permits the system to enter new information with out affecting the operation of the remainder of the chip. 

One other modified DRAM type, known as synchronous IT (SDRAM),employs particular internal registers and clock signals to arrange information requests from memory. 

In contrast to asynchronous memory modules, SDRAM units function in sync with the system clock. After an preliminary learn or write entry has been carried out on the memory machine, further accesses may be carried out in a high-speed burst mode that operates at one entry per clock cycle. 

Particular internal configurations additionally velocity up the operation of the SDRAM memory, IT machine employs inside interleaving that allows one side of the memory to be accessed whereas the opposite half is finishing an operation. 

As a result of there are two variations of SDRAM (2-clock and 4-clock), you could make sure that the IT kind you're utilizing is supported  in Chipset of system  system board's .


Extended information out (EDO) memory will increase the velocity at which It operations are carried out by reducing out the 10-nanosecond wait time normally required between issuing memory addresses. 

That is achieved by not disabling the info bus pins between bus cycles. EDO is an advanced kind offast page-mode DRAM additionally known as hyper page-mode IT. The advantage of EDO DRAM is encountered when a number of sequential memory accesses are carried out. 

Particular memory units even have been designed to optimize video memory-elated acivities. Among st these are video RAM (VRAM) and Home windows RAM(WRAM) in typical DRAM units, entry to the info saved inside is shared between the system microprocessor and the video controller. 

The microprocessor accesses the RAM to replace the info in it and to maintain it refreshed. The video controller strikes information out of the memory to become screen info . 

Usually, each units should entry the info via the identical information bus. VRAM employs a particular dual-port entry system to hurry up video operations. It  is optimized to switch blocks of information at a time. 

An organization named RAMBUS  has designed a proprietary DRAM memory technology that guarantees very excessive information supply speeds. The know-how has been given a wide range of totally different names that embrace RAMBUS  DRAM (RDRAM), direct IT (DRDRAM), and RAMBUS inline memory module (RIMM). 

The RIMM reference applies to a particular 184-pin memory module designed to carry the RAMBUS  units. Nevertheless, their high-speed switch modes generate significantly extra warmth than regular DIMMS. Subsequently, RIMM modules in dude an aluminum warmth defend, known as a warmth spreader, to guard the chips from overheating in system.

The RAMBUS  know-how employs a particular, inside 16-bit information channel that operates along with a 400MHZ clock. The 16-bit channel permits the machine to function at a lot larger speeds than extra typical 64-bit buses. 

Though Intel had expressed some curiosity in exploring the know-how for its future system board designs, the truth that it's a proprietary commonplace might hinder its acceptance out there. RIMMS  look just like DIMMS, however have a special pin rely. RIMMS transfer data in 16-bit chunks. The sooner entry and switch velocity generates extra warmth.

SRAM :

Like DRAM,  SRAM is out there in quite a lot of differing kinds. A lot of the memory group methods described for DRAM are also carried out in SRAM.


A) Asynchronous SRAM is commonplace  It and delivers information from the memory to the microprocessor and returns it to the cache in a single clock cycle.

B) Synchronous SRAM makes use of particular clock alerts and buffer storage to deliver information to the CPU in a single clock cycle after the primary cycle. The firet address is saved and used to retrieve the info whereas the subsequent address is on its option to the cache.

C) Pipeline SRAM makes use of three clock cycles to fetch the primary information and then accesses addresses inside the chosen web page on every clock cycle.

D) Burst-mode SRAM hundreds quite a lot of consecutive information places from the cache, over a number of clock cycles, primarily based on a single handle from the microprocessor.

In  electronics phrases or digital electronic  , a buffer is a holding space for information shared by devices that function at totally different speeds or have totally different priorities. 

These devices permit a memory module to function with out the delays that different units impose. Some kinds of SDRAM memory modules include buffer registers instantly on the module. The buffer registers maintain and re-transmit the info alerts via the memory in a computer chips.


The other  side permits the module to coordinate transfers with the out side system. The re-transmission issue lowers the sign drain on the host system and allows the memory module to carry extra memory chips. 

Registered and UN buffered memory modules can't be blended. The design of the chipset's  memory controller dictates which kinds of memory  can use in any pc or system.









EXPLAIN BEST RAM DETAILS - WHAT IS THE RAM IN A COMPUTER ? EXPLAIN BEST RAM DETAILS - WHAT IS THE RAM IN A COMPUTER ? Reviewed by Abhijit Das on July 24, 2020 Rating: 5

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