Timing Is Everything!
Want to know how long a particular Photoshop command takes? Click on the right-facing triangle toward the bottom left-hand corner of your image window. From the pop-up menu that appears, under Show, choose Timing. This starts the equivalent of a stopwatch that times your Photoshop commands in seconds. This is great for speed tests, pitting one machine against another. Which one runs the fastest Smart Sharpen? Time it and find out.