Difference Between SRAM and
DRAM
SRAM and DRAM are the types of RAM. Candidates can also check
the difference between RAM and ROM here. These topics are an important part
of the GATE CSE syllabus. Now, let us discuss the difference between SRAM
and DRAM provided in the table below.
SRAM VS DRAM
SRAM DRAM
It saves data for as long as the
It can store data as long as
power is on or for a few moments
electricity is available.
if the power is turned off.
The contents of the capacitor must
Because capacitors aren't
be updated on a regular basis in
utilized, there's no need to
order to store information for a
refresh.
longer amount of time.
DRAM, which is often found in
SRAM has a storage capacity of
tablets and smartphones, has a
1 MB to 16 MB in most cases.
capacity of 1 GB to 2 GB.
The storage capacity of SRAM The storage capacity of DRAM is
is low. higher than SRAM.
SRAM is more expensive than DRAM is less expensive than
DRAM. SRAM.
It is comparatively faster. It is comparatively slower.
The power consumption is
The cost of production is low, and
minimal, and the access speed
the memory capacity is higher.
is quick.
SRAM is used in cache
DRAM is used in main memories.
memories.
What is SRAM?
SRAM stands for static random-access memory. SRAM is a form of random-
access memory (RAM) that stores each bit using latching circuitry (flip-flops). It is
a volatile memory, which means that data is lost when the power is turned off.
SRAM must be updated on a regular basis. It is quicker and more costly than
DRAM, and it is often used for a CPU's cache and internal registers. Transistors
retain data and require a steady power supply. SRAM does not need to be updated
to recall the data it stores because of the constant power. SRAM is named static
because it does not require any changes or actions, such as refreshing, to keep the
data intact. It's a type of memory that's employed in caches.
What is DRAM?
DRAM stands for dynamic random-access memory. It is a form of RAM that
allows each bit of data to be stored in its own capacitor within an integrated circuit.
It is a kind of computer memory that may be found in any current desktop
computer.
DRAM is named dynamic because it requires regular modification or activity, such
as refreshing, to keep the data intact. It is employed in the implementation of main
memory. Capacitors and a few transistors are used to make DRAM. The capacitor
is used to store data in this form of RAM, with a bit value of 1 indicating that the
capacitor is charged and a bit value of 0 indicating that the capacitor is discharged.
Key Differences Between SRAM and DRAM
The key differences between SRAM and DRAM are given below.
• Transistors are used in SRAM to store the data. The data is kept in
capacitors in DRAM.
• Transistors are used in SRAM to store the data. The data is kept in
capacitors in DRAM.
• SRAM outperforms DRAM in terms of speed and cost.
• DRAM provides more storage capacity than SRAM.
• Cache memory uses SRAMs, whereas main memory uses DRAMs.
