To perform a Speed Test follow the steps below:
Launch Drive Genius 4.
Select the drive you wish to check the speed of in the list on the left-hand side.
Select Speed from the Speed Up section.
Select Start to begin the Speed Test.
The Results of the speed test will be displayed at the bottom of the screen indicating the Read Speed of the drive tested. The Read Speed tells you how fast your drive is capable of retrieving the data stored within it.