Difference Between SRAM vs DRAM

Difference Between SRAM vs DRAM

If you are an aspiring engineer who wishes to stand out in the electronics industry, you should be able to spot the difference between SRAM and DRAM. The reason is that it is one of the basic things you ought to know. You see, those are essential components in a computer’s operation.

After going through this piece, you can be sure that you will learn about the disparity. In the end, you will be more informed. In keeping with our tradition, we start with the definitions and then progress to the contrasts.

Definition of SRAM

SRAM is a cell that comprises 2 inverters for storing data. The full meaning of the acronym is static random-access memory, and it includes flip-flop circuitry and an additional two transistors used for access control. When it comes to speed, this technology is very fast. In theory, all that this cell needs to hold data is an uninterrupted supply of power.

But then, it is still considered a volatile storage element. More often than not, it is found in the cache unit of modern computers and other technological devices. A downside of this technology is that it is relatively pricey. The high cost is usually a result of the number of transistors needed to implement its cell. But then, a device does not have to refresh the circuit for any reason.

It also stands out when it comes to reliability and performance. It is little wonder that it has become a preferred element for building the essential components of computers, routers, automotive electronics, industrial subsystems, etc. Now, we will go into the difference between DRAM and SRAM after examining the former closely.

Definition of DRAM

DRAM is a type of cell constructed with some capacitors and transistors. The acronym stands for dynamic random-access memory. Well, data is stored as zeros and ones. So, when it is a one, the component is fully charged. When it is at zero, the capacitive circuit discharges.

Indeed, there is always a possibility that the circuit could be discharging whenever power is constantly supplied to it. Well, the long-term outcome is that the circuit consumes more power. Still, a computer has to continuously refresh it to retain its content for a long time period. Once it is refreshed, the data it holds is rewritten. That action will restore them to the original charge.

Hence, it requires additional circuitry. It will interest you to know that this cell loses data even when its power is left on. On the bright side, it has other benefits such as holding more data and being relatively affordable.

Moving on, it only needs just one transistor to manage its single block of memory. Its storage capacity is large, and it is used in many computing gadgets on the market. 

Main Differences Between SRAM vs DRAM

This table gives an explanation of the SRAM vs DRAM comparison.

Basis of ComparisonSRAMDRAM  
MeaningA cell that uses latches for storing chargesA cell that uses capacitors to store bits in the form of charges
SpeedHas a lower access time, so it is fastHas a higher access time, so it is slower
Typical size1 MB to 16 MB1 GB to 16 GB  
PositionFound in the processorPlaced on the motherboard  
Implemented inThe cache memoryThe main memory
StorageHas a small storage capacityHas a larger storage capacity
LeakageThere is no leakageThere is leakage
Usage Uses bistable latching circuitryStores each bit in a separate capacitor
Power dissipationConsumes less powerConsumes more power
A single memory block6 transistorsOne transistor

Difference Between SRAM and DRAM: Conclusion

To wrap up this guide on DRAM vs SRAM, we have to point out the key disparity between them. While the former is used in the main memory of the computing device, the latter is employed in the cache unit. SRAM is quicker, but it is also pricier than DRAM. They both play an essential role in modern technology. Finally, these are the crucial facts to keep in mind.