CPU Multi-Core Stress Benchmark
Stress-test all logical CPU cores at 100% load in your browser using Web Workers. Test multi-core throughput and laptop thermal stability.
Technical Metrics & Telemetry
Active Logical Cores
-- Cores
Arithmetic Throughput
-- M ops
Multi-Core Benchmark Score
-- pts
How to Use This Tool
STEP 1
Click Start CPU Stress Test
The benchmark spawns dedicated Web
Worker threads equal to your system's hardware core count.
STEP 2
Listen for Fan Noise
Laptop cooling fans will ramp up
as all cores execute intensive mathematical loops at full clock speed.
STEP 3
Check Benchmark Result
Review your total computed
operations and multi-core score once the 10-second timer completes.
Frequently Asked Questions
Can running this stress test overheat my PC?
No. Modern Intel, AMD, and Apple processors have hardware thermal management (thermal throttling) that
automatically modulates clock speeds if temperatures exceed safe limits.
How does Web Worker threading work?
Web Workers run scripts on independent operating system background threads, allowing 100% CPU utilization
without freezing your browser interface.
Why is my laptop slower on battery power?
Most laptops activate power-saving profiles on battery that reduce CPU clock speeds and wattage limits.
What is thermal throttling?
Thermal throttling is a protective mechanism where the CPU automatically lowers clock speeds to prevent
overheating when cooling is inadequate.