[ Performance ]

CPU Benchmark & Stress Test

Runs a prime-counting workload across Web Workers to measure single-core and multi-core throughput, using every logical core your browser reports.

// Core activity — 0 logical cores detected

Single-core score

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Multi-core score

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Scaling efficiency

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Test duration per phase

Logical cores—

PhaseIdle

Ops counted—

Score = thousands of primes found per second, summed across active workers. This will spin up your CPU fans — that's the point.

// Event log