Output
Rendered FPS; shader iteration count
UserBenchmark / All Tools / GPU Stress Test
Performance
GPU Stress Test
Run an adjustable WebGL shader workload and measure rendered frames.
Free to useNo downloadNo sign-up
GPU Stress Test · At a glance
Quick answer: Run an adjustable WebGL shader workload and measure rendered frames. FPS often reaches the display cadence on light loads.
GPU Stress Test
The test loads when you open it. Device access is requested only after you choose to start.
Detailed guide
How to use this tool
- Start the WebGL shader and compare the same iteration count.
- Keep the internal canvas size and browser power conditions unchanged.
Input
Bounded user-started graphics workload
Browser requirement
WebGL; fixed 1000 × 400 internal canvas
Processing
Runs on your device; no tool-result upload
How it works and what the result means
This exercises a WebGL fragment shader at a fixed internal resolution. Driver, browser, canvas resolution and thermal conditions all affect the result.
Reading the result
FPS often reaches the display cadence on light loads. Raising arithmetic work changes the task, so results at different counts are not directly equivalent.
Keep shader settings fixed
The shader renders a fixed 1000 × 400 canvas. Iteration count controls arithmetic work. Compare the same count, browser and power mode. FPS is often capped by display cadence, so a light load can make different GPUs look equal. Stop if the device becomes uncomfortable or unresponsive. The tool cannot read temperatures.
What to check next
Check hardware acceleration if WebGL is unavailable. Stop the draw loop before changing other settings or devices.
Stop ends the draw loop and frees the shader resources. The browser cannot report reliable GPU temperature or guarantee system-wide stability.
Frequently asked questions
Does completing the run certify GPU stability?
No. It is a bounded browser workload and cannot validate every graphics engine, memory pattern, driver path or temperature condition.
How do I start the GPU Stress Test?
Start the shader workload and adjust its iteration count. Compare rendered frames per second under the same settings.
Does this tool require a download or an account?
No. Open the interactive tool above in a modern browser. The instructions and explanations are available even with JavaScript disabled; running a test needs JavaScript.
Why can two attempts give different results?
Power settings, background tasks, browser scheduling, operating-system input processing and device settings affect measurements. Compare repeated attempts with identical settings rather than the single highest score.