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Last Updated: Mar 28, 2024
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Difference Between SRAM and DRAM

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Prerita Agarwal
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23 Jul, 2024 @ 01:30 PM

Introduction 

Hello, fellow learners! Do you know what SRAM and DRAM are? Whether you're a tech enthusiast or want to learn more about your computer's functions, this article will give you an excellent grasp of these two significant categories of computer memory.

difference between sram and dram

The difference between SRAM and DRAM, as well as their functional principles, benefits, and drawbacks, will all be thoroughly examined in this article.

So let's enter the world of SRAM and DRAM!!

What is SRAM?

Before understanding the difference between SRAM and DRAM, let's discuss the basic introduction of SRAM.

SRAM stands for Static Random Access Memory. Essential data is held in SRAM, similar to a computer's temporary storage area, typically on a computer's central processing unit (CPU) so that the computer can access it fast. SRAM is fabricated using a multi-step process that commonly uses photolithography and other semiconductor fabrication techniques to lay out the desired pattern of transistors and other components on the semiconductor substrate.

SRAM is a computer memory that can retain information swiftly but only temporarily. It is comparable to a simple chalkboard to write on and erase, but the info vanishes once you let off the chalkboard. This means that everything stored in SRAM is gone if the power goes out because SRAM requires power to continue hanging onto the data it contains.

Also see,  what is middleware

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What is DRAM?

Before understanding the difference between SRAM and DRAM, let's discuss the basic introduction of DRAM.

DRAM stands for Dynamic Random Access Memory. In computers and other electronic devices, it serves as a volatile memory to store data that the Central Processor Unit (CPU) needs quick access to.

DRAM is like a giant refrigerator filled with food. In the fridge, each food item has a designated spot so you can easily retrieve what you need to prepare a meal. In similar ways, the data computer needs to access rapidly, such as the commands to run a program or the information for a spreadsheet, is stored in DRAM. Power must be delivered continuously to DRAM to keep the data.

Characteristics of SRAM

Some of the characteristics of SRAM include the following:

  1. Non-persistent: The information in the SRAM memory is lost when a device or system that uses it is switched off. The recorded data can be maintained in SRAM; it is a type of memory that needs power. The data in SRAM is wiped and no longer held in the absence of power
     
  2. Cache Memory: SRAM is frequently used as cache memory due to its quick data access and low latency, which allows it to retrieve data more quickly than other types of memory
     
  3. Error detection and correction: SRAM memory has a function that enables it to find and fix storage faults
     

Now, let us look at some advantages of SRAM:

Advantages of SRAM

  • Compared to other forms of computer memory, SRAM is quicker.
     
  • SRAM doesn't require constant refreshing like other forms of memory do.
     
  • Compared to other forms of memory, SRAM consumes less energy.
     
  • Faster data retrieval is possible using SRAM.
     
  • Processing on computers can be accelerated with SRAM.
     
  • When SRAM is not in use, it consumes less power.
     
  • Space can be conserved inside a computer by using SRAM.

Characteristics of DRAM

Some of the characteristics of DRAM include the following:

  1. Transience: DRAM is volatile memory; when the power to the device is cut off, the data in the DRAM is gone
     
  2. Dynamic: DRAM is called "dynamic" since it frequently needs to be refreshed to keep the data contained
     
  3. Compact: Data can be stored in DRAM in a very condensed manner. Consider a shoebox that can hold various tiny items, like jewelry or buttons. DRAM can store much data in a limited amount of physical space

Advantages of DRAM

  • Interaction with other components is straightforward.
     
  • It can accommodate many memory requests at once.
     
  • It can be applied to high-bandwidth tasks like video processing.
     
  • It is easily upgradeable.
     
  • It is efficiently used in multi-core processors.
     
  • It is accessible from multiple devices at once.
     
  • It has low latency for fast data access.

Difference Between SRAM and DRAM

Now, we will discuss the difference between SRAM and DRAM. The following table provides a summary of the main differences between SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory):

ParametersSRAMDRAM
FunctionSRAM accesses and briefly stores data in a type of memory that is extremely rapid.Compared to SRAM, DRAM can temporarily store more data in a compact memory module. 
CostIt is more expensive than DRAM.It is less expensive than SRAM.
TechnologyFlip-flop gates are a class of electrical circuits SRAM uses to store data. These gates retain and store the data via electrical impulses and swiftly retrieve it as needed.DRAM combines a capacitor and a transistor to store data, i.e. two electronic parts. Although the transistor manages the electricity flowing to the capacitor, the capacitor holds the charge that reflects the data that has been stored.
DensitySRAM has a lesser storage capacity or density than DRAM. Unlike DRAM, SRAM can store less data in a given physical area.DRAM has a greater storage capacity or density than SRAM. As a result, DRAM has a higher data storage capacity per unit of physical area than SRAM.
Power ConsumptionIt has high power consumption.It has low power consumption. 
RefreshUnlike DRAM, SRAM does not require periodic refreshing to maintain the stored data. DRAM requires periodic refreshing to maintain the stored data.
UsageSRAM is typically used for cache memory in processors.DRAM is used for main memory in computer systems.
Access TimeSRAM can provide data more quickly because it is designed to respond to requests faster than DRAM. DRAM, on the other hand, is slower and has a higher access time.

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Frequently Asked Questions

What is the major difference between SRAM and DRAM?

In SRAM (Static Random Access Memory) data is stored in a static state which requires continuous power to retain information, whereas in DRAM (Dynamic Random Access Memory), data is stored in capacitors and needs to be constantly refreshed, consuming more power but offering higher density and lower cost.

What is the difference between SRAM and DRAM storage capacity?

SRAM (Static RAM) has lower storage capacity compared to DRAM (Dynamic RAM). SRAM is faster but consumes more power due to its complex cell design. DRAM provides higher capacity and serves as the main memory but is slower with lower standby power consumption. The choice depends on system requirements for speed and capacity.

What is the difference between DRAM and SRAM in terms of characteristics such as speed size and cost?

SRAM (Static RAM) is faster and more reliable than DRAM (Dynamic RAM), but it's also more expensive and larger in size. DRAM, on the other hand, is slower, has a higher power consumption, but is cheaper and smaller, making it more common in regular PC memory.

Conclusion

We discovered much about the SRAM and DRAM types of computer memory in this article. We found their variations, benefits, and operational details. Understanding the difference between SRAM and DRAM helps improve your understanding of how computers access and store data. If you want to dive deeper into this subject, We suggest checking out the following articles: 

Happy Coding!

Topics covered
1.
Introduction 
2.
What is SRAM?
3.
What is DRAM?
4.
Characteristics of SRAM
5.
Advantages of SRAM
6.
Characteristics of DRAM
7.
Advantages of DRAM
8.
Difference Between SRAM and DRAM
9.
Frequently Asked Questions
9.1.
What is the major difference between SRAM and DRAM?
9.2.
What is the difference between SRAM and DRAM storage capacity?
9.3.
What is the difference between DRAM and SRAM in terms of characteristics such as speed size and cost?
10.
Conclusion