Sorry - should have made that clear. It's a Pi 2.
A clock program I wrote some time ago shows the CPU usage and CPU load on screen (with a Pi 1, it was important, although it seems less so with the Pi 2). Running that program on a standard (non-touch) HDMI screen shows usage at 4% and load varying from about 10% up to 60%. When run on the touchscreen, usage is also 4% but load never drops below 100%.