It's a rock, and in the course of running Fusion you wouldn't know it's any different from previous versions if it weren't shown in the Activity Monitor:

Activity Monitor (in Mac OS X environments)

This is easy to figure out - run Activity Monitor and see what the CPU is doing.

However, whether the computer is CPU-bound is relatively easy to confirm - you can check that in Activity Monitor.

In 2013 Activity Monitors will be distributed to interested participants.

Activity Monitor is a task manager, a utility for performing different tasks to a computer processes, in the OS X operating system.

Prior to Mac OS X v10.3, the Activity Monitor was named the Process Viewer.

However, some aspects of quitting stalled applications are divided between Apple Menu Force Quit and Activity Monitor.

First, you run the Activity Monitor to find and close the program (All Processes, Process Name).

The Activity Monitor said around 800%, which is half of the 1600% total for this machine.