Which factor does NOT affect CPU performance?

The factor that does not affect CPU performance is the graphics processing speed. The performance of a CPU is primarily determined by its ability to execute instructions and manage data efficiently. This involves aspects such as the instruction set architecture, heat dissipation mechanisms, and cache size and memory bandwidth, all of which directly influence how well a CPU can process tasks.

Graphics processing speed is related to the performance of a graphics processing unit (GPU), which operates separately from the CPU. While the GPU can impact the overall system performance, particularly in graphics-intensive applications, it does not directly affect the computational speed or efficiency of the CPU itself. Therefore, changes or improvements in GPU performance do not have a direct bearing on how quickly or effectively a CPU operates in its primary function of executing instructions and managing tasks.