CPU Cache 1 story

Within PC Processors & Platforms, CPU Cache deserves its own scope because its behavior, configuration, and compatibility questions are distinct from the surrounding topics. The semantic core includes processor cache memory, shared processor cache, cache hit rate, and CPU memory performance, which together define the functions, interfaces, and operating behavior that make this topic different from adjacent components. This keeps the tag narrower than PC Processors & Platforms as a whole while giving readers enough context to evaluate compatibility, configure the feature correctly, and recognize when a separate problem-specific tag applies.