Which of the following is a typical configuration requirement for a dual-core processor upgrade?

When upgrading to a dual-core processor, the typical requirement is to replace the existing processor. This is because a dual-core processor is a distinct hardware component that needs to be physically installed in place of a single-core or another existing processor.

In many cases, the motherboard must support the specific architecture and socket type of the dual-core processor being installed. Therefore, double-checking compatibility with the existing motherboard is essential to ensure it can accommodate the new processor. However, this task primarily involves swapping out the processor itself rather than needing to install an entirely new motherboard.

The other configurations like upgrading the power supply may be necessary if the new processor has significantly higher power requirements, but this is not universally applicable. Software updates are usually more related to optimizing performance or ensuring compatibility rather than being a physical upgrade requirement. Hence, the fundamental action necessary for incorporating a dual-core processor upgrade is the replacement of the existing processor.