Procedures to check GPU Usage using Activity Monitor:
- Step 1: Launching Activity Monitor (Find it through opening Allications and then Utilities; or search with Spotlight)
- Step 2: After opening the Activity Monitor, select Window, then choose GPU History. Alternatively, you can also use the shortcut Command-4 in the keyboard.
- Step 3: By doing this step, GPU History window will be opened. This GPU History window will show you utilization history for each GPU that is available to your Mac.
- Step 4: To place the GPU History on top from the Menu Bar, you can: Select Window then choose Keep CPU Windows on Top (as shown in the following picture)
Note: You can also press Command-2 to view current CPU usage and Command-3 to view CPU usage history