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SRAM, or Static Random Access Memory, is a type of volatile computer memory that is much faster than DRAM but is more expensive and has a lower capacity. It uses flip-flops to store data, which means it does not need to be constantly refreshed to retain information as long as power is supplied. This makes SRAM ideal for applications where speed is critical, such as CPU cache, registers, and high-speed buffers.

Key characteristics

Volatility: SRAM is volatile memory, meaning it loses all data when power is turned off.

Speed: It is significantly faster than DRAM, with lower latency, because it does not require periodic refreshing.

Cost: It is more expensive to produce than DRAM due to its larger size and complex cell structure.

Capacity: It has a lower density, meaning more physical space is required to store the same amount of data compared to DRAM.

Construction: Each bit is stored in a bistable circuit, typically a flip-flop made of four to six transistors, rather than a capacitor like in DRAM.