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Technology

High Refresh Rate (120Hz): what it is, how it works and what it does

High refresh rate, typically 120Hz, is a display specification indicating the screen's ability to update the image 120 times per second, providing smoother visual transitions compared to the traditional 60Hz standard.

Evidence-backed content 13 sources 30/08/2026
Encyclopedic article

Definition and Principles

High refresh rate refers to the frequency at which a display updates the image shown to the user. In the context of current consumer technology, the predominant standard for this category is 120Hz. This means the display panel generates 120 frames per second (fps), doubling the frequency of traditional 60Hz panels.

This increase in refresh frequency allows for smoother transitions between image states, reducing the sensation of flicker or stutter, especially during fast movements or while navigating user interfaces.

Architecture and Associated Specifications

The implementation of a 120Hz refresh rate is often integrated into high-end panels, frequently using AMOLED technology. According to available technical specifications, this feature often coexists with other visual enhancements, such as:

  • Color Depth: Support for 1B (one billion) colors.
  • Brightness: High peak brightness levels, such as 8000 nits in certain models.
  • Pulse Width Modulation (PWM): High PWM frequencies, for example, 3840Hz, which may contribute to reducing perceived flicker.
  • HDR Compatibility: Support for formats like HDR Vivid.

Applications and Scope

The presence of a 120Hz refresh rate is an indicator that the device is designed to offer a premium visual experience. Its main applications include:

  1. Gaming: Allows for a more agile and fluid response in compatible games.
  2. Web and Social Navigation: Improves fluidity when scrolling through lists or content feeds.
  3. Video Playback: Although video content is usually limited to 24, 30, or 60 fps, the screen can display content with greater overall smoothness.

Limits and Interpretation

It is important to distinguish between the panel's native refresh rate and the system's effective refresh rate. The 120Hz specification indicates the hardware's maximum capability. The user's actual experience depends on software optimization and application compatibility. Not all applications or games natively support 120Hz, so the device may dynamically switch between 60Hz and 120Hz to optimize battery consumption.

The mention of this specification in a product confirms that the manufacturer has prioritized visual fluidity as a central feature of the display design.