TestMyGears

Screen tearing test

Run a free screen tearing test online in your browser. Fast-scrolling stripe, checker, and block-layer patterns expose horizontal tears when VSync is off or frame rate exceeds refresh — use fullscreen on 60Hz, 144Hz, 165Hz, or 240Hz panels to confirm G-Sync, FreeSync, or driver sync settings.

High-contrast checker — tearing most visible at grid edges

Tearing Detection Checker Scroll

Test Mode

Sync Technology

No Sync

Visible tearing

Minimal lag

VSync

No tearing

+1 frame lag

Fast Sync

No tearing

+⅓ frame

FreeSync/G-Sync

No tearing

≈0 lag

VRR Range

48–60 Hz

Basic FreeSync

Entry

48–144 Hz

Standard FreeSync

Mainstream

48–240 Hz

High-end FreeSync

Excellent

1–360 Hz

G-Sync Ultimate

Flagship

Assessment Guide

No Tearing

Stripes continuous · No break lines → VRR working

Has Tearing

Horizontal breaks · Frame misalignment → Enable VRR

Professional screen tearing detection tool

TestMyGears is a free monitor screen tearing test with live canvas patterns — no screen tearing test video download required. Stripe tracking, block layers, and checker scroll modes stress the GPU–display pipeline the way UFO and Blur Busters references do, but run entirely in-browser for 60fps, 144Hz, 165Hz, and 240Hz setups.

Tearing detection patterns

High-speed horizontal stripes and checker scroll reveal horizontal screen tearing when the GPU swaps frames mid-refresh. Misalignment at the tear line means display refresh and GPU output are out of sync — the same cue people chase in a screen tearing test video or UFO screen tearing test clip.

VSync effect comparison

Vertical Sync eliminates tearing by making the GPU wait for refresh completion — adding up to one frame of input lag (~16.7 ms at 60Hz). Toggle VSync in NVIDIA or AMD settings, then rerun this online screen tearing test to feel the latency trade-off on 60Hz and 144Hz monitors.

VRR technology verification

FreeSync and G-Sync (variable refresh rate) dynamically match panel Hz to GPU frame rate — no tearing and near-zero added latency within the certified range. Use the VRR range panel to see whether your 48–144 Hz or 48–240 Hz window covers your target fps.

What is screen tearing?

Screen tearing is the visual disruption caused by GPU–display desynchronization — the foundation behind every monitor screen tearing test, NVIDIA screen tearing test search, and Reddit thread about VSync vs VRR.

Tearing cause

Displays refresh at a fixed rate — 60Hz every 16.67 ms, 144Hz every 6.94 ms. When the GPU frame rate drifts out of sync, the panel may show content from two frames at once: the top half from an old frame and the bottom from a new one, creating a horizontal tear line. Vertical screen tearing is rare; most artifacts are horizontal seams across the image.

The VSync trade-off

Traditional VSync forces the GPU to wait until the display finishes refreshing. That removes tearing but adds input lag (up to one full frame) and causes severe stutter when fps drops below refresh — for example 30 fps on a 60Hz panel. Competitive players on 240Hz often disable VSync and accept tears for lower latency.

VRR (variable refresh rate)

FreeSync (AMD / VESA Adaptive-Sync) and G-Sync (NVIDIA) let the display match GPU output dynamically — 60 fps at 60Hz, 100 fps at 100Hz. No tearing, no extra latency, no stutter within range. For most users FreeSync and G-Sync Compatible panels deliver identical results; G-Sync Ultimate adds a hardware module and wider 1–360 Hz certification.

How to run a screen tearing test

A complete monitor screen tearing test combines uncapped motion, fullscreen contrast, and sync toggles — whether you are on Windows, Linux, or testing after a driver update.

  1. Expose tearing intentionally

    Turn off VSync in-game or set NVIDIA/AMD control panel to 'Off' or 'Fast'. Cap removal helps on 144Hz and 165Hz panels where tears are thinner but still visible in this checker scroll mode. On Linux, check compositor sync (Wayland vs X11) — tearing is less common on modern Wayland sessions. See also: Tearing by scenario .

    Tip Fine stripe mode makes subtle tears easier to spot on high-refresh panels

  2. Watch for horizontal breaks

    Enter fullscreen and track the moving pattern. Horizontal screen tearing appears as a sharp offset in stripes or checker cells — not motion blur (that is the ghosting test). A screen tearing test windmill or UFO bar moves similarly; our block-layers mode mimics multi-speed UFO layers. See also: Ghosting test .

    Tip Pause at the tear line mentally — if it drifts vertically, that is tearing not stutter

  3. Enable and verify VRR

    Turn on G-Sync/FreeSync in GPU settings and confirm the monitor OSD shows adaptive sync. Rerun at 60fps, 120fps, and uncapped — tears should vanish inside your VRR window (e.g. 48–144 Hz). Above max refresh, cap fps to refresh minus 3 for stable VRR on NVIDIA. See also: Refresh rate test .

    Tip HDMI 2.1 or DisplayPort is required for VRR on many TVs and ultrawides

Sync technology terminology

VSync (vertical sync)

The oldest anti-tearing technology. The GPU waits until the display completes one scan (vertical retrace) before outputting the next frame. Eliminates tearing but adds up to one frame of latency and severe performance loss when frame rate falls below refresh.

FreeSync

AMD-led adaptive sync based on VESA Adaptive-Sync. License-free — most modern displays support it. Typical range 48–144 Hz with LFC below minimum. HDMI 2.1 VRR extends support to consoles and TVs.

G-Sync Compatible

NVIDIA-validated FreeSync displays that enable variable refresh with GeForce GPUs — no dedicated G-Sync module required. Most FreeSync monitors qualify; check NVIDIA's validated list if toggling does nothing.

G-Sync Ultimate

NVIDIA's top tier with a built-in processing module, wider VRR from 1 Hz, and HDR certification. Significantly pricier than standard FreeSync — perceptual difference is small for most 144Hz and 165Hz gaming setups.

Tearing impact across scenarios

How screen tearing feels depends on frame rate, refresh, and task — from competitive FPS at 240Hz to 24fps video on a 60Hz display.

Competitive FPS games

  • High frame rates (200+ fps) move tear lines quickly — less noticeable but latency matters more.
  • Many pros disable VSync and accept tearing for input response.
  • Best fix: VRR plus an fps cap at refresh minus 3.

Recommended VRR + frame cap

AAA / RPG games

  • Lower fps (30–60) makes tears drift slowly and look obvious on camera pans.
  • Image quality priority — tearing ruins cinematic moments.
  • VRR is ideal; VSync is an acceptable fallback.

Recommended VRR preferred

Video playback

  • 24fps or 30fps on 60Hz — players often sync internally; tearing is rare.
  • Forcing VRR for video can cause frame pacing quirks.
  • A screen tearing test video on YouTube uses pre-rendered footage — use this live test for your actual pipeline.

Recommended Player sync enough

Office / browsing

  • Occasional scroll tearing on X11 or older drivers.
  • Modern browsers use compositor sync — impact is minimal.
  • System defaults are usually fine.

Recommended Defaults OK

Platform & driver tips

NVIDIA Control Panel

Manage 3D settings → Vertical sync: Off to test tearing, Fast for low-lag sync, or On for full VSync. Enable G-SYNC for full screen and windowed as needed. Pair with this NVIDIA screen tearing test before changing in-game settings.

AMD Software

Gaming → Graphics → Radeon Anti-Lag and FreeSync toggles. Confirm the monitor reports FreeSync in OSD. HDMI 1.4 may lack VRR — use DisplayPort for 144Hz adaptive sync.

Linux compositors

Wayland sessions (GNOME, KDE) sync compositing and reduce desktop tearing. X11 with compositing off may still tear when dragging windows — less relevant for fullscreen game tests but worth noting for screen tearing test Linux searches.

Refresh-rate targets

Run the same pattern at native 60Hz, 144Hz, 165Hz, and 240Hz — higher refresh shrinks tear offset size but does not replace VRR. Confirm actual Hz with the refresh rate test if OSD and Windows disagree.

Screen tearing test FAQs

Does tearing only occur in games?

Any moving image can tear when sync is off — web scrolling, window drags, or video. Games are the most common complaint because fps swings wildly. Modern compositors (Windows DWM, Wayland) reduce desktop tearing but fullscreen games bypass them.

FreeSync/G-Sync enabled but still tearing?

Frame rate may exceed the VRR ceiling (e.g. 200 fps on 144Hz), VRR is disabled for windowed mode, HDMI bandwidth is too low, or the cable lacks adaptive sync. Cap fps slightly below max refresh and confirm the monitor OSD shows VRR active.

How much latency does VSync add?

Double-buffered VSync adds up to one frame (~16.7 ms at 60Hz, ~6.9 ms at 144Hz). Triple-buffered VSync adds roughly half a frame. NVIDIA Fast Sync adds about one-third frame. VRR adds virtually none when fps stays inside range.

FreeSync or G-Sync — which is better?

For most users the result is identical on G-Sync Compatible panels. G-Sync Ultimate adds a hardware module and wider 1 Hz–360 Hz range but costs more. FreeSync offers better value; pick by panel quality, not logo alone.

Does high refresh rate reduce tearing?

Higher refresh shrinks the visible offset — tears at 240Hz are less glaring than at 60Hz — but VRR or VSync remains the real fix. A screen tearing test 240Hz still shows seams when sync is off.

Why is VRR range 48–144 Hz and not 1–144 Hz?

LCD panels flicker at very low refresh; 48 Hz is a safe minimum for many VA and IPS cells. LFC (Low Framerate Compensation) multiplies frames below range to keep sync engaged. G-Sync Ultimate modules can start nearer 1 Hz.

Related display tests

Pair tearing checks with refresh, ghosting, and full display diagnostics.