Difference Between SRAM and DRAM | SRAM Vs DRAM | Comparison

 Static RAM is able to retain all information into static form until power supply is turn off, so due to this nature this memory has name the volatile memory. Main objective of using the static RAM is to make Cache Memory. Static Ram is more expensive as well as its power consumption more than dynamic RAM.

RAM

Dynamic RAM is another type of semiconductor memory that designed specially to store data or program files which needed by computer processors for performing their functions.

In DRAM, several capacitors are using for storing every bit of data. This is very simple path to save data in its memory because it needs small area to store same data to SRAM as well as it is capable to store massive data than to SRAM but it requires the frequently refreshing of its circuit for its charging, so it consumes more power compare to SRAM.

Difference between SRAM and DRAM

In this section, we will do differentiate between SRAM and DRAM as well as compare static and dynamic RAM in tabular form.

Computer Hardware

SRAM (Static Random Access Memory)

More expensive

It has excellent speed to DRAM.

Use in L1 and L2 Caches Memory.

High density, it means six transistors per chip.

Volatile Memory — Do not need extra charges for storing data.

It is placed between main memory and processor.

Electronic Components

Linked directly to Cache Memory

Small size

Here is the corrected and complete version of your notes on SRAM:

  • SRAM (Static Random Access Memory) uses transistors and latches to store data.
  • Each memory cell consists of six transistors (6T SRAM cell).
  • It does not require a refreshing circuit, unlike DRAM.
  • SRAM consumes less power than DRAM during standby because it does not need periodic refresh, although it generally has higher power consumption during active operation and uses more chip area.
  • SRAM is on-chip memory (cache memory), so it has a very small access time and provides high-speed data access.
  • Because of its high speed, SRAM is commonly used as cache memory in computers (L1, L2, and L3 cache), while DRAM is used as the main memory due to its higher storage density and lower cost.

RAM

DRAM (Dynamic Random Access Memory)

Less expensive

It has slow speed to SRAM

Use in Main Memory.

It uses low density per cell; it means one transistor per chip.

Volatile Memory — need regular power supply to store data

This embeds on the motherboard of PC.

Chips & Processors

It is attached directly with CPU bus.

Large size

Use capacitors.

It uses one transistor in one block memory.

Need power refreshing circuit

Consume high power.

DRAM is off chip memory that means, it needs large access time.

Electronic Components

Key Differences RAM Vs DRAM

  • Static RAM is inbuilt chip memory whose gets to access time is small in size, whereas Dynamic RAM is an off-chip memory, and it has a enlarge access time. So SRAM’s speed is getting fastest compare to DRAM.
  • DRAM is presented in massive storage capacity, whereas SRAM has small size of storage capacity.
  • SRAM is more costly, but DRAM is less expensive.
  • SRAM is also using in the cache memory, whereas DRAM is used in the main memory.
  • SRAM contains small dense, whereas DRAM contains higher dense.
  • SRAM’s design is more complex because it uses many numbers of transistors, whereas DRAM has simple design.
  • Due to single block of memory, SRAM needs six transistors but DRAM requires only one transistor for single block of memory.
  • SRAM (Static Random Access Memory) is built using CMOS technology and stores data using six transistors (6T) arranged as a latch.
  • SRAM has no significant charge leakage because it stores data in a bistable latch rather than as electric charge.
  • DRAM (Dynamic Random Access Memory) uses one transistor and one capacitor (1T1C) to store each bit.
  • In DRAM, the capacitor leaks charge over time because the dielectric between its conductive plates is not a perfect insulator.
  • Therefore, DRAM requires periodic refresh circuitry to restore the stored charge and prevent data loss.
  • Since SRAM does not require refreshing, it provides faster access and is commonly used as cache (on-chip) memory, whereas DRAM is used as the main memory due to its higher density and lower cost.
  • SRAM works based on the principle of changing the flow of current to direction through switches, so it consumes less power. But, DRAM operates on holding the charges, so it consumes more power tha

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