GPU Test: Check Your Graphics Card and Stress Test It Online
This free GPU test shows which graphics card your browser is using, then pushes it with a 3D scene and reports live FPS, frame time and a final score. Everything runs inside Chrome, Edge, Firefox or Safari, so you can check NVIDIA, AMD, Intel or Apple graphics in under one minute without downloads.
Most people run a GPU test when games start stuttering, laptops feel slower than they should, or newly bought cards need quick checks before return windows close. Short stress runs reveal whether frame rates hold steady, drop under load, or never reach expected levels, which tells you where to look next.
How to Run the GPU Test
Each run takes about 20 seconds, so you can try several load levels in one sitting and compare results side by side.
- Close heavy apps and games, and plug in laptops so graphics chips can draw full power.
- Pick any load level, starting with Medium, since it suits most integrated and dedicated graphics.
- Press Start, and our tool renders one complex 3D scene for 20 seconds while measuring every frame.
- Read average FPS, lowest FPS and score once the run finishes.
- Repeat with heavier levels to see how far that card can go before frame rates fall.
Understanding Your Results
Every number on screen tells you something different about graphics performance, and this table explains what each one means.
| Reading | What it shows | What good looks like |
|---|---|---|
| Average FPS | Frames drawn per second across the run | Higher is better |
| Lowest FPS | Worst moment during the run | Close to average, with no deep dips |
| Frame time | Milliseconds needed per frame | Low and steady, where 16.7 ms equals 60 FPS |
| Score | FPS combined with load level | Useful for comparing runs on one computer |
If average FPS sits exactly at 60, 120 or 144, your monitor refresh rate is limiting results rather than graphics power. Choose heavier levels in that case, because only then will the GPU test show what your card can really handle.
Which Graphics Card Is Your Browser Using?
Our tool reads renderer names such as NVIDIA GeForce RTX 4060, AMD Radeon RX 7600 or Intel Iris Xe Graphics before any run starts. Laptops often carry two chips, a low-power integrated one from Intel or AMD and a faster dedicated card from NVIDIA or AMD, and browsers frequently pick integrated graphics to save battery.
To switch, open Windows Settings, go to System, then Display, then Graphics, and set your browser to High performance. NVIDIA Control Panel offers the same option under its 3D settings, and you should reload this page afterward. Renderer names like SwiftShader or Microsoft Basic Render Driver mean hardware acceleration is off or drivers need updating, so fix that before trusting any score.
Signs Your Graphics Card Is Struggling
Low numbers alone do not always mean failing hardware, but some patterns point to real problems worth fixing quickly.
- Lowest FPS falls far below average, which often signals overheating, thermal throttling or busy background apps.
- Scores drop on second and third runs, which suggests heat building up inside your case or laptop.
- Colored dots, flickering lines or stretched shapes appear in the scene, which are classic artifacts from failing memory or unstable overclocks.
- Drivers crash or screens go black during testing, which points to unstable drivers, weak power supplies or faulty cards.
For proper GPU health checks, update drivers from NVIDIA, AMD or Intel, clean dust from fans and heatsinks, and watch temperatures in GPU-Z or HWiNFO while you test again.
How Browser GPU Testing Works
Our tester draws its 3D scene with WebGL, the graphics technology behind browser games, so results reflect real rendering work on your hardware. It also checks support for WebGPU, which is newer and gives web games and AI tools fuller access to modern graphics chips. WebGPU still has limited browser availability, so a “Not supported” label usually reflects your browser version rather than your card.
Browsers keep pages inside safe sandboxes, which means no website can read GPU temperature, fan speed, clock speed or power draw. We say this plainly because some online tools imply they can, and honest limits help you choose correct tools for deeper checks.
Online GPU Test vs FurMark, 3DMark and Unigine
A browser GPU test gives fast answers with zero setup, which makes it ideal for quick checks on work laptops, used computers or school machines. Desktop tools like FurMark, 3DMark Time Spy and Unigine Superposition run much longer and heavier loads, and they compare scores against huge public databases. Pair those tools with MSI Afterburner or HWiNFO when you need temperatures, clock speeds and stability over long sessions.
Laptop GPU Tips for Accurate Results
Laptops lower graphics power on battery, so always plug in your charger and choose a high-performance power mode before testing. Gaming laptops from ASUS ROG, Lenovo Legion or MSI also offer modes inside Armoury Crate, Lenovo Vantage or MSI Center that change GPU limits. Raising laptops at the back for airflow can help scores too, because cooler chips hold higher clock speeds for longer.
Frequently Asked Questions
Is this stress test safe for my graphics card?
Yes, it works like a short game scene and stops automatically after 20 seconds or whenever you switch tabs. Graphics cards also protect themselves by slowing down when temperatures climb too high.
Why does my score change between runs?
Background apps, browser tabs, temperatures and power modes all shift slightly between runs. Close other programs and run each level two or three times, then compare average scores instead of single results.
Can this page show my GPU temperature?
No, browsers block access to temperature sensors for security reasons. Use GPU-Z, HWiNFO or MSI Afterburner alongside our test if you want live temperature readings.
Does it work on phones and tablets?
Yes, most Android phones, iPhones and iPads run our WebGL scene in their default browsers. Mobile scores sit much lower than desktop scores, so only compare results between similar devices.
Is integrated graphics good enough for gaming?
Modern chips like AMD Radeon 780M or Intel Arc graphics handle lighter games and esports titles at modest settings. Run our Medium level first, and if scores look weak, lower game resolution or effects before blaming hardware.
Does this test check video memory (VRAM)?
Not directly, because our scene focuses on rendering speed rather than filling video memory. Dedicated VRAM checks need desktop tools like OCCT, which can test memory over longer periods.
Start Your GPU Test Now
Stutter, low frame rates and odd visuals all have causes you can find, and a GPU test is the fastest first step toward fixing them. Pick any load level, press Start, and within 20 seconds you will see how your graphics card performs under real load. If frames look smooth but aiming still feels jumpy, check polling rate with our mouse tester or controller inputs with our gamepad tester, and visit our hardware tester for every other device.