3D Render Rendering
Instanced PBR-style scene with normal-mapped surfaces, dynamic lights and shadows.
3D Render
This canvas shows the animated graphics workload used to stress the GPU. It is decorative; results are listed in the metrics below.
- FPS
- –
- 1% LOW
- –
- FRAME TIME
- –
- SCORE
- –
- TIME
- 0:00
- LOAD
- –
- ERRORS
- 0
Before you start
GPU stress tests can significantly increase GPU load, temperature, power draw and fan speed.
Stop the test if your system becomes unstable, overheats, crashes or behaves unexpectedly. Do not run extreme tests on hardware with known cooling problems. This website cannot guarantee hardware safety.
This is a deliberately punishing test. It can push your GPU to its thermal and power limits for minutes.
- Laptops: plug in the charger and make sure the vents are clear.
- Make sure your GPU is cooled properly. Do not run this with known fan or cooling problems.
- Save your work and close other important tabs. A weak or overheated GPU can make the screen flicker or the graphics driver reset, which may close apps.
- You can stop at any time with the Stop button or the Escape key. The test also stops itself if frames take more than two seconds.
Long run: this test keeps the GPU busy for five minutes or more, so your computer will get warm. Laptops should be plugged in. You can stop at any time with the Stop button.
Instanced PBR-style scene with normal-mapped surfaces, dynamic lights and shadows.
About this test
An instanced 3D scene with normal-mapped surfaces, dynamic lights and shadows, drawn with WebGL 2. It loads the whole graphics pipeline (vertex work, shading, lighting and memory traffic), so it is a good all-round check of how your GPU behaves under a game-like load.
It measures frame rate and frame-time consistency in your browser. It cannot read temperatures, clock speeds or exact VRAM, and a light setting can simply hit your display's refresh-rate cap.
How to read the results
Watch the average FPS for how much work the GPU finished, and the 1% and 0.1% lows for stutter. The SMG Verdict after the run scores power, steadiness, endurance, pacing and spike control from 0 to 100 and gives a tier from S to D. The class score removes intensity and resolution so runs at different settings share one scale; about 2,000 is a steady 60 FPS.
If the average sits exactly at your refresh rate with tight lows, the test was capped; raise the intensity or resolution to find the real limit.
Frequently asked questions
How long does it take?
Sixty seconds by default. You can choose 30 seconds up to several minutes before you start.
Why is my FPS stuck at 60 or 144?
The browser draws at most once per display refresh. Raise the intensity or resolution scale so the GPU, not the display, becomes the limit.
Is it safe to run?
It is similar to a demanding game. Stop it with the Stop button if you see artefacts or the system becomes unresponsive.
Which browser is best?
Any current Chrome, Edge, Firefox or Safari with hardware acceleration turned on. A software renderer will give very low scores.
Share feedback about this test
Did it work for you? Tell us your GPU or device, your browser and what you saw. Your email address is never shown.