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I/O Checkup
System ready

System Performance Tests

Run controlled browser CPU workloads and inspect timing, throughput, and responsiveness.

CPU Stress Test

Run a controlled browser CPU workload and observe task throughput, timing, and responsiveness. This is not a thermal or hardware diagnostic.

Before you begin

CPU stress tests exercise browser-managed work and report timing and responsiveness. Results depend on browser scheduling, power settings, and other running apps. They do not read component temperature, establish safe operating limits, or certify hardware health. Stop the test if the device becomes unusually hot or unstable.