What a Browser Test Can Tell You After a Clock or Voltage Change
Use a recorded browser workload as one observation after a configuration change, without treating a successful run as overclock certification.
After changing a clock or voltage setting, a browser test can help compare a particular graphics workload with its earlier behavior. It cannot establish that the configuration is safe or stable in every application. This guide covers observation, not instructions to select voltages or clock limits.
Preserve a baseline before changing anything
Record the existing configuration, application versions, power mode, and workload settings. Run the volume shader demo with fixed code, camera, and viewport, or a fixed shader stress test setting. Retain the readings and any errors.
If a configuration has already changed and no baseline exists, do not invent one. Use the manufacturer's default configuration as a separate, clearly labeled comparison where it is available and appropriate.
Make a bounded comparison
Use the same browser version and scene. Allow a brief warm-up and repeat the same short observation window. Record all results. A higher FPS is a change in this workload, not proof that an overclock is reliable under a game, renderer, or compute kernel.
Read temperature, clock speed, and utilization with a supported external monitor. GPUtest.org cannot read them via WebGL. No single temperature or run duration certifies every model.
Understand the consistency index
The shader stress test calculates its consistency index from FPS sample variation. A high index can occur with a constantly slow frame rate. Browser scheduling and display refresh limits also affect it. It is not a hardware error count or a probability of stability.
A successful texture readback check is similarly limited: it samples bytes from browser textures rather than testing every physical memory location.
Respond to an unexpected problem
Stop if the device becomes unresponsive, displays unexpected corruption, or restarts. Return to a known documented configuration before gathering another comparison. Record the application, settings, symptoms, and logs. Reproduce in the workload you actually intend to use.
If a browser fails but another application does not, investigate browser and driver conditions. If several applications fail at default settings, use the manufacturer's support process rather than escalating the browser stress level.
Our methodology provides the run-record fields. WebGL documentation describes the graphics interface, not a hardware certification procedure.