A 120Hz panel draws a new image every 8.3 milliseconds instead of the 16.7 milliseconds a 60Hz screen takes. The effect shows up before you launch anything: cursor movement, scrolling and pen input all gain fluidity. In games it halves the worst-case wait between a frame finishing and appearing, which is why competitive players notice it even when the average frame rate has not moved.

The number on its own guarantees nothing. Pixel response, panel technology, resolution and whether the screen can vary its refresh rate all shape the result, and the graphics hardware still has to produce roughly 120 frames a second for the panel to have something new to show. Weigh those together rather than shopping on the refresh figure alone. Evetech ships nationwide from Centurion, with 1 to 3 business days to the major centres.