The short answer is "no".
The long answer: Assuming you're running Windows XP--hit ctrl-alt-del to access the Task Manager. Click on the "Processes" tab. Under the "Image Name" column, you should see a "System Idle Process"... for the vast majority of users, these will be in the high 90's. That's because CPUs haven't been the bottleneck in computational speed for the average user for a loooong time...
It says 98. What does that mean?