What role does SRAM play in relation to the CPU?

SRAM, or Static Random Access Memory, serves as cache memory for the CPU, which is crucial for enhancing the processor's performance. It is used to store frequently accessed data and instructions close to the CPU, enabling faster data retrieval compared to other types of memory, such as DRAM (Dynamic Random Access Memory).

When the CPU needs to access data, it first checks the cache (which is made up of SRAM) to see if the data is already present. If it is, this process is significantly quicker than fetching data from the main memory, improving the overall speed and efficiency of computing tasks. The static nature of SRAM also allows it to retain data without the need for constant refreshing, which is an advantage over dynamic memory types.

This role as cache memory is foundational in optimizing CPU operations, reducing latency, and supporting high-speed data processing, making it the correct answer.