Final answer:
A 64-bit processor's main advantage is its ability to access a much larger amount of RAM than a 32-bit processor, enhancing performance in tasks that require large amounts of memory.
Step-by-step explanation:
The primary advantage of installing a 64-bit processor over a 32-bit processor is its ability to access a larger amount of RAM memory. Unlike 32-bit processors that can typically address up to 4 GB of RAM, 64-bit processors can theoretically address up to 16 exabytes of RAM, although operating system and hardware limits usually cap this at a much lower level (often 192 GB or more, depending on the system). This increased memory capacity allows for improved performance, particularly in memory-intensive applications such as video editing, gaming, and running virtual machines.