Päivitysnopeus

Päivitysnopeus, often translated as refresh rate, is a fundamental specification for display devices such as monitors and televisions. It refers to how many times per second the image on the screen is redrawn or updated. This rate is measured in Hertz (Hz), where 1 Hz signifies one update per second. A higher refresh rate means the screen is redrawn more frequently, leading to a smoother visual experience.

For example, a display with a 60 Hz refresh rate updates the image 60 times every second. In contrast, a 120 Hz display updates the image twice as often, resulting in 120 updates per second. This difference is particularly noticeable in fast-paced content, such as video games or sports broadcasts. Higher refresh rates can reduce motion blur and screen tearing, making fast-moving objects appear clearer and more fluid.

The actual frame rate of the content being displayed also plays a role. If a display has a high refresh rate, but the content is only being rendered at a lower frame rate, the benefits of the higher refresh rate may not be fully realized. However, technologies like variable refresh rate (VRR) aim to synchronize the display's refresh rate with the content's frame rate, further enhancing the visual experience by ensuring that the display only refreshes when new frames are available. This synchronization minimizes stuttering and input lag.