A cache hit in computational architecture occurs when data requested by the CPU is found in the cache memory, which is a small and fast memory that stores frequently accessed data. In other words, the CPU does not need to access the main memory to retrieve the data because it is already available in the cache memory, resulting in faster data retrieval and improved performance. A cache hit is considered favorable as it reduces the need to access slower and larger main memory, which can take more time to fetch data.
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