What is a key characteristic of SRAM in a PC?

Static Random Access Memory (SRAM) is primarily used for cache memory in a PC due to its speed and reliability. Cache memory serves as a high-speed storage area that provides fast access to frequently used data for the CPU, significantly improving overall system performance. Unlike Dynamic Random Access Memory (DRAM), which requires periodic refreshing to maintain data integrity, SRAM retains data as long as power is supplied, making it faster and more efficient for this purpose.

The use of SRAM for cache memory allows processors to store and quickly retrieve data that is likely to be used next, rather than accessing slower main memory (DRAM). This characteristic makes SRAM a preferred choice in applications where speed is crucial, such as in CPU caches.