Refresh Rate vs Response Time: What Each Monitor Number Means

Gaming monitor boxes love to show off numbers: 144 hertz, 1 millisecond, adaptive sync, HDR. The two that cause the most confusion are refresh rate and response time, because both relate to motion, yet they measure entirely different things. Knowing the difference helps you choose a monitor that suits your games and your budget.

What refresh rate measures

Refresh rate, given in hertz, is how many times per second the screen updates the image. A 60 hertz monitor refreshes sixty times each second, while a 144 hertz monitor does it 144 times. A higher refresh rate lets the screen show more frames if your computer can produce them, which makes motion look smoother and reduces the time between what the game renders and what you see.

A higher refresh rate only helps if your system actually delivers matching frame rates. If a game runs at 60 frames per second, a 240 hertz monitor will not make it look like 240.

What response time measures

Response time, in milliseconds, describes how quickly a pixel changes from one color to another. Slow transitions cause ghosting or smearing behind fast-moving objects. The figure on the box often comes from a specific test that favors the manufacturer, such as a gray-to-gray transition under ideal settings. Real performance can be different across color changes, so independent reviews are more informative than the headline number.

Input lag is a separate thing

Input lag is the delay between you pressing a button and the result appearing on screen. It includes the game, your computer, your controller and the monitor's own processing. Monitors with game modes usually reduce their share of this delay. Reviews often measure it separately.

Panel types and typical traits

The display panel influences these numbers:

• IPS panels: good color and viewing angles, often fast enough for most gamers
• VA panels: strong contrast, though some models show slower transitions in dark scenes
• TN panels: historically fast and affordable, with narrower viewing angles and weaker color
• OLED panels: very fast pixel response and deep blacks, with considerations such as brightness and long-term image retention

Each technology has strengths and trade-offs, and models within each type vary a lot.

Adaptive sync

Variable refresh rate technologies let the monitor adjust its refresh rate to match your game's frame rate, which reduces tearing and uneven pacing without the delay of traditional synchronization. Check that your graphics card and monitor support compatible versions, and read about the supported range.

How much refresh rate do you need?

It depends on what you play:

1. Story-driven and slower games: 60 hertz is acceptable, and 75 to 120 gives a nicer feel.
2. General gaming: 120 to 165 hertz is a comfortable range for many players.
3. Competitive shooters: higher rates can help if your system can reach them, though other factors matter as much.

Make sure your computer can feed the monitor. A balanced setup beats an extreme monitor paired with a weak graphics card, as discussed in our guide to reading a graphics card spec sheet.

Check the connection

Cable and port versions limit which resolution and refresh rate combinations you can use. Verify that your graphics card outputs and the cable you plan to use support the settings you want.

Make a smart choice

Look at resolution, size, panel type, refresh rate, tested response and input lag together. Read reviews from sources that measure objectively, and favor consistent performance over the highest number.

Frequently asked questions

Is 1 ms response time always better than 5 ms? Not necessarily. The numbers are measured differently, and the real result depends on the panel and settings.

Do I need 240 hertz? Only if your games and computer can use it, and if you will notice the difference.

Does a higher refresh rate reduce input lag? It can reduce the display's contribution to delay, but it does not remove other sources.