CPU & memory
About 3–5 seconds · Method 3.0
Calibrate a deterministic fixed-seed workload in a Web Worker, run five measured samples, and report median operations per millisecond, variation, workload size, duration, and verification checksum.
Test setup
Runs the Performance measurement used by this test.
Close heavy tabs and keep the same power mode when comparing devices.
Ready to run
Transparent method
The workload, raw readings, progress, and final browser score are visible. Scores are a relative 0–100 reference under similar conditions, not a hardware certification.
Useful context
Usually not. Browsers expose logical core count but intentionally hide most exact CPU model details, so this tool measures browser compute throughput instead.
Temperature, battery mode, background apps, and thermal throttling can change browser compute speed.
Troubleshooting
Keep checking