60Hz 120Hz 144Hz 240Hz: 주사율이 중요할까?

Walk into any electronics store and you'll see monitors advertised at 60Hz, 75Hz, 120Hz, 144Hz, 240Hz, and even 360Hz. The numbers go up, the prices go up: but does the difference actually matter? Here's what refresh rate really does and when it's worth paying for.

What Is Refresh Rate?

Refresh rate is how many times per second your display redraws its image. A 60Hz monitor redraws 60 times per second; a 144Hz monitor 144 times. Higher refresh = smoother motion, lower visual latency, and more responsive feel.

Refresh rate is independent of resolution. A 4K 60Hz panel and a 1080p 60Hz panel update at the same speed; they just contain different amounts of detail per update.

How It Affects Gaming

In competitive shooters, higher refresh rate means you see opponents earlier (each frame contains newer information) and your aim feels more direct (less mouse-to-screen lag). Pro players almost universally use 240Hz+ monitors for this reason.

For non-competitive gaming, the upgrade from 60Hz to 144Hz is the most dramatic. Everything from menus to cutscenes feels noticeably smoother. The jump from 144Hz to 240Hz is real but much smaller.

60Hz vs 144Hz: Can You Actually See the Difference?

Yes: and not subtly. Side-by-side, 144Hz feels visibly different even doing normal cursor movement and window scrolling. After using a high-refresh monitor for a week, going back to 60Hz feels sluggish.

The difference between 144Hz and 240Hz exists but requires deliberate attention to notice in regular use. In competitive gaming the difference matters; in everyday work it's overkill.

Check Your Monitor's Actual Refresh Rate

You can buy a 144Hz monitor and never actually get 144Hz: Windows often defaults a new high-refresh display to 60Hz. Cable bandwidth also matters: HDMI 1.4 caps at 60Hz at 1080p, so a cheap HDMI cable on a 144Hz monitor silently limits you.

Our tester measures the rate at which your browser is actually rendering, which equals your display refresh rate when your GPU has headroom. If you see 60Hz but bought a 144Hz monitor, check Windows Display Settings → Advanced display → Refresh rate.

Is Your Monitor Running at Its Max Hz?

Windows: Settings → Display → Advanced display → Refresh rate. Change to the highest available option.

Mac: System Settings → Displays → click the display → Refresh rate. Most Macs don't expose this for built-in displays but do for external ones.

Linux: depends on display server. On Wayland, use the gnome-settings or KDE settings. On X11, use xrandr.

VRR, G-Sync, and FreeSync Explained

Variable refresh rate (VRR) matches the monitor's refresh rate to the GPU's frame output, eliminating screen tearing without the input latency penalty of V-Sync. NVIDIA calls their version G-Sync; AMD calls theirs FreeSync; both implement the same underlying VESA Adaptive Sync standard.

For gaming, VRR is a clear win: smoother frame delivery at any rate the GPU produces. For everyday use it's harmless. Most modern monitors include VRR support; enable it in your GPU driver settings.