Final answer:
The main advantage of using a CPU in 64-bit mode is the ability to access more memory. This allows the CPU to process data and instructions more efficiently, resulting in faster execution of tasks. 64-bit CPUs are also able to handle larger integers and perform more complex calculations.
Step-by-step explanation:
The main advantage of using a CPU in 64-bit mode is the ability to access more memory than in 32-bit mode. In 64-bit mode, the CPU can process data and instructions in larger chunks, which allows for faster execution of tasks. Additionally, 64-bit CPUs can handle larger integers and perform more complex calculations, making them ideal for tasks that involve heavy computational work such as video editing and gaming.