刷新率检测与 UFO 动态测试8 分钟阅读最后更新于
显示器刷新率（Hz）、动态清晰度与 UFO 飞碟测试指南
实时检测显示器真实刷新率，通过经典 UFO 飞碟动画评估动态清晰度，排查屏幕坏点。
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核心要点
- 刷新率（Hz）表示每秒绘制的帧数；更高的刷新率大幅减少动态模糊与输入延迟。
- 浏览器端通过精确计算 requestAnimationFrame 连续调用之间的时间戳差值测定 Hz。
- UFO 飞碟测试清晰展现了像素灰阶响应时间（GtG）与视觉暂留对清晰度的影响。
- 纯色全屏模式（RGB三原色）可快速检出不发光的坏点或卡住的亮点。
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测试屏幕刷新率与面板像素坏点
测定屏幕 Hz 刷新频率，评估动态运动清晰度，全屏检测 LCD/OLED 坏点。
- requestAnimationFrame Delta Hz detection
- UFO pursuit motion blur simulation
- Full-screen RGB dead pixel canvases
- 8-bit & 10-bit color banding check
01.Refresh Rate (Hz) vs. Frame Rate (FPS) Explained
Refresh rate (measured in Hertz) is a physical hardware capability of the display panel (e.g., 60Hz, 144Hz, 240Hz, 360Hz). Frame rate (Frames Per Second - FPS) is the rate at which your GPU renders new frames. When FPS matches or exceeds display Hz with variable refresh rate technologies (G-Sync / FreeSync), motion fluidity is maximized and screen tearing is eliminated.
02.UFO Pursuit Motion Blur & Pixel Response Times
Sample-and-hold display technology retains image frames until the next refresh cycle. The UFO test moves graphical elements across the screen at varying speeds (e.g., 60 FPS, 120 FPS, 240 FPS), making ghosting trails, inverse ghosting (overshoot caused by aggressive overdrive), and motion blur clearly visible to the human eye.
How to Test Display Refresh Rate and Pixels
Step-by-step display diagnostic workflow.
1
Open Screen Tester
Navigate to the Screen Refresh Rate tool in a modern browser (Chrome, Edge, Firefox, Safari).
2
Check Real-Time Hz
Observe the real-time measured Hz counter to confirm your display is operating at its maximum rated frequency.
3
Evaluate Motion Blur
Follow the moving UFO sprites across different speed tiers to inspect ghosting and motion clarity.
4
Run Full-Screen Dead Pixel Test
Click full-screen RGB color blocks (Red, Green, Blue, White, Black) to inspect for dead or stuck pixels.
Frequently Asked Questions
Check your OS display settings (Windows Settings > Display > Advanced display) to ensure the refresh rate is set to 144Hz, and verify you are using a DisplayPort or HDMI 2.0+ cable.