GPU Tester Tool
Check WebGL & STRESS
Free online GPU test tool — benchmark your graphics card, run stress tests, check WebGL capabilities, FPS performance, Shader bench, VRAM usage & rendering speed.
GPU TEST — COMPLETE GUIDE ▼
This free online GPU benchmark and stress test tool uses WebGL to measure your graphics card's performance directly in the browser. No software installation required. Test FPS performance, shader throughput, particle rendering, geometry capacity, and GPU stability. For a complete system performance picture, pair this with our CPU test to evaluate both your processor and graphics card side by side.
What Tests Are Available?
The tool includes five distinct GPU tests: Full Benchmark (complete GPU scoring across all metrics), Particle Stress Test (fill rate and parallel workloads), Shader Benchmark (fragment shader complexity including ray marching and procedural generation), Geometry Throughput (draw call and vertex shader performance), and a sustained Stress Test to detect thermal throttling. If you're also experiencing screen tearing or refresh rate issues, our UFO test can help verify your monitor's motion handling and sync capabilities.
GPU Score Tiers Explained
| SCORE RANGE | GPU TIER | PERFORMANCE | EXAMPLE GPUs |
|---|---|---|---|
| 0 – 2,000 | ENTRY | Basic tasks, light games | Intel UHD 630, GT 1030 |
| 2,000 – 5,000 | BUDGET | 1080p gaming, medium settings | GTX 1650, RX 580 |
| 5,000 – 10,000 | MID-RANGE | 1080p–1440p high settings | RTX 3060, RX 6600 XT |
| 10,000 – 16,000 | HIGH-END | 1440p–4K ultra settings | RTX 4070, RX 7800 XT |
| 16,000+ | FLAGSHIP | 4K ultra, ray tracing, AI | RTX 4090, RX 7900 XTX |
Frequently Asked Questions
Simply open this GPU test tool in any modern browser and click START TEST on the Benchmark tab. The tool uses WebGL to run graphically intensive workloads on your GPU and measures FPS, frame time, and rendering throughput to generate a score. No downloads, no plugins — just your browser and GPU. You can also run our FPS test to measure your real-world frame rate and display performance independently of the GPU benchmark score.
Low GPU scores can result from: hardware acceleration being disabled in your browser, other GPU-intensive programs running simultaneously, outdated GPU drivers, a laptop GPU running in low-power mode, or browser security settings blocking WebGL. Try closing other applications and checking that your browser has hardware acceleration enabled in settings. If your GPU score looks healthy but online speeds feel slow, an ISP test can rule out network bottlenecks affecting streaming or cloud gaming performance.
A GPU stress test pushes your graphics card to maximum utilization for an extended period. This is useful for detecting thermal throttling (performance drops due to overheating), instability from overclocking, cooling system adequacy, and sustained performance under load. If FPS drops significantly during the stress test, your GPU may be throttling due to heat. For a complete thermal and load assessment of your entire system, also run our CPU test to check whether your processor is simultaneously bottlenecking performance under sustained workloads.
WebGL is a JavaScript API that renders 2D and 3D graphics using your GPU's hardware acceleration directly in the browser. It exposes GPU capabilities like vertex shaders, fragment shaders, texture mapping, and geometry processing. Our tests push these subsystems to measure real-world GPU performance that correlates with gaming and 3D application capability. To verify your display is keeping up with the GPU output, use our UFO test to check monitor refresh rate and frame pacing.
Yes! Mobile GPUs (Adreno, Mali, Apple GPU) are supported via WebGL. Mobile scores will naturally be lower than desktop dedicated GPUs. The tool adapts its workload to the device. Note that sustained stress tests on mobile may cause the device to get warm — this is normal for maximum GPU utilization. On mobile, pairing this with an ISP test is especially useful if you're evaluating mobile gaming performance, since network latency and bandwidth can impact online game responsiveness as much as raw GPU power.
WebGL benchmarks are relative indicators rather than absolute measurements. Browser overhead, GPU driver version, hardware acceleration settings, and background processes all affect results. For the most accurate results, close other applications, ensure hardware acceleration is enabled, and run the test 2-3 times and average the scores. For a fuller performance profile, complement your GPU results with our FPS test to measure live frame output under real rendering conditions.