What are the four general components or subsystems that can have performance bottlenecks within a PC?

The four general components or subsystems that can experience performance bottlenecks in a PC are the CPU, GPU, memory (RAM), and storage (HDD/SSD). The CPU can become a bottleneck if it cannot process tasks quickly enough, while the GPU can limit performance in graphics-intensive applications. Insufficient RAM can hinder multitasking and application performance, and slow storage devices can delay data access and loading times, impacting overall system responsiveness.