CPU sustained performance test
Warm up the browser and check whether CPU performance drops under sustained work.
LIVE TEST WORKSPACEBROWSER ESTIMATE · LOCAL ONLY
How fast can this browser compute?
A short warm-up is followed by five stages over about 12 seconds. We compare the first and final stage to detect a performance drop.
—change
FIRST → LAST STAGE—
TEST DURATION12s
LOGICAL PROCESSORS—
This is a browser benchmark, not a hardware certification.
This is a sustained browser workload. A drop can suggest power saving, background work, or throttling, but it cannot prove a hardware fault.
How to use this test
- Close heavy tabs and choose the same power mode for comparisons.
- Let the test warm up, then run five sustained stages.
- A drop may suggest throttling or background work; it does not prove a hardware fault.
Does this measure my CPU model's ranking?
No. It is a sustained browser workload that looks for performance changes during the test. Use BrowserBench or a native tool for standardized comparisons.
Where is my test data stored?
The test runs on your device. Results are only saved to this browser when you choose Save. Clear them from the report page at any time. Audio and video are never uploaded.