280Hz Meaning & How to Use It

The 280Hz refresh rate is a display specification found on some high-end gaming monitors. It means the screen redraws its image 280 times per second, which is faster than the more common 144Hz or 240Hz panels. You enter the refresh rate and your frame rate to see the benefit, and the calculator below shows the frame time and the percentage of frames that are displayed on time.

Formula

The core relationship is simply the inverse of the refresh rate:

Frame time (ms) = 1000 / refresh rate (Hz)

For a 280Hz display, each frame lasts 1000 / 280 = 3.57 ms. The second formula compares your actual frame rate to the refresh rate:

Sync percentage = (FPS / refresh rate) × 100

This tells you what fraction of your rendered frames can actually be shown on screen in a given second, assuming you are not using a frame limiter.

Worked Example

Using the default values from the calculator, a 280Hz monitor with a game running at 280 FPS:

• Frame time = 1000 / 280 = 3.57 ms
• Frame interval at 280 FPS = 1000 / 280 = 3.57 ms
• Sync percentage = (280 / 280) × 100 = 100%

So every frame is displayed exactly once, and the monitor is fully utilized.

What 280Hz Actually Means

The refresh rate is a hardware property of the monitor. It is the maximum number of times per second the panel can change the image it shows. A 280Hz panel can display a new frame every 3.57 ms. This is faster than 240Hz (4.17 ms per frame) and much faster than 144Hz (6.94 ms per frame).

To get the benefit, your graphics card must be able to render frames at a rate close to or above 280 FPS. If your GPU only produces 100 FPS, the monitor will still refresh 280 times per second, but it will show the same frame multiple times. The smoothness you perceive is limited by the lower of the two numbers: your FPS or your refresh rate.

How to Use a 280Hz Monitor

Using a 280Hz monitor is not just about plugging it in. You need to set it up correctly:

1. Connect with a cable that supports 280Hz. DisplayPort 1.4 or HDMI 2.1 are typical for 1080p or 1440p at 280Hz. Older HDMI 1.4 or 2.0 cables may cap at 144Hz or 240Hz.
2. Enable the refresh rate in your operating system. In Windows, go to Settings > System > Display > Advanced display settings and choose 280Hz from the drop-down. On macOS, go to System Settings > Displays and hold the Option key to see all refresh rates.
3. Check your game settings. Some games have their own refresh rate setting. Make sure it is set to 280Hz, not 60Hz or 144Hz.
4. Disable V-Sync or use a frame limiter. If your FPS exceeds 280, V-Sync can add input lag. If your FPS is below 280, V-Sync can cause stuttering. Many competitive players prefer to cap FPS slightly above the refresh rate, like 300 FPS, and use a variable refresh rate (VRR) technology like FreeSync or G-Sync if available.

Choosing Between 144Hz, 240Hz, and 280Hz

The jump from 144Hz to 240Hz is noticeable to most people, especially in fast-paced shooters. The jump from 240Hz to 280Hz is smaller. The difference in frame time is only 0.6 ms (4.17 ms vs 3.57 ms). For a professional esports player, that might matter. For a casual gamer, it is unlikely to be a deciding factor.

Consider your GPU first. If you have a mid-range card that struggles to hit 144 FPS in the games you play, a 280Hz monitor will not make those games smoother. You will see the same frame rate, just on a faster-refreshing screen. Only buy a 280Hz monitor if your hardware can deliver at least 240 FPS in the titles you care about.

Common Misconceptions

• “280Hz means 280 FPS.â€� No. Refresh rate is a monitor capability; FPS is a GPU output. They are independent. You can have 280Hz with 60 FPS, or 144Hz with 300 FPS.
• “A higher refresh rate is always better.â€� Yes, but only if your FPS can keep up. Also, higher refresh rates often require lower resolutions or graphics settings. A 280Hz 1080p monitor may be worse for you than a 144Hz 1440p monitor if you prefer visual fidelity.
• “The human eye can’t see above 60Hz.â€� This is false. Most people can perceive the difference between 60Hz and 144Hz easily, and many can notice 240Hz vs 144Hz in blind tests. The 280Hz vs 240Hz difference is subtle but real.

Potential Drawbacks

280Hz monitors are not without downsides. They tend to be more expensive than 240Hz models, and they are almost always TN or fast IPS panels. TN panels have worse color and viewing angles. Fast IPS panels are better but still not as good as a good VA panel for contrast. Also, to run a game at 280 FPS, you need a powerful CPU and GPU, which can be costly. Finally, some people experience eye strain with very high refresh rates, though this is rare and usually related to flicker or poor backlight strobing.

Frequently Asked Questions

Is 280Hz worth it over 240Hz?

For most gamers, no. The difference is 0.6 ms per frame, which is barely perceptible. If you are a professional esports player who can feel 1 ms differences, it might help. Otherwise, spend the money on a better GPU or a higher resolution monitor.

Can my PC run 280Hz?

Check your GPU and CPU. You need to be able to output at least 280 FPS in the games you play. A high-end GPU like an RTX 4080 or RX 7900 XTX can do that in esports titles at 1080p, but not in AAA games at max settings. Also, your CPU must be fast enough to feed the GPU.

Do I need a special cable for 280Hz?

Yes. Use a DisplayPort 1.4 cable or an HDMI 2.1 cable. Older cables may not have the bandwidth for 280Hz at your resolution. Check your monitor’s manual for the recommended cable.

Is 280Hz good for non-gaming tasks?

Yes, but the benefit is small. Scrolling text and moving windows will look slightly smoother than on a 144Hz monitor. However, for office work, a 4K 60Hz monitor is often more useful than a 1080p 280Hz one.

What does 280Hz mean for eye strain?

Higher refresh rates can reduce eye strain for some people because they reduce flicker, but this is not guaranteed. If you are sensitive to flicker, look for a monitor with a backlight that does not use PWM dimming.

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in refresh | Refresh rate | Hz | 280 | 0
in fps | Your average FPS | fps | 280 | 0
out frametime | Frame time | ms | 1000 / refresh | 2
out frame_interval | Frame interval at your FPS | ms | 1000 / fps | 2
out sync_percent | Frames shown on time | % | min(100, fps / refresh * 100) | 1