Tool

CPU Benchmark Online

Run a standardised browser-based CPU benchmark across four task categories: integer arithmetic, floating point, memory bandwidth, and cryptographic operations. No download required.

System Info

Logical Cores32

PlatformLinux x86_64

EngineJavaScript (V8/SpiderMonkey)

Benchmark Results

⚡

Integer Arithmetic

50M integer operations

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📐

Floating Point

10M sqrt + sin operations

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💾

Memory Bandwidth

1M element array read/write

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🔐

Crypto / Hashing

5M hash-like operations

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Press "Run Benchmark" to start

About the CPUKiller Browser Benchmark

Browser-based benchmarks measure JavaScript engine performance rather than raw CPU throughput. Results vary between Chrome, Firefox, and Safari due to different JIT compiler implementations. For the most consistent results, close other browser tabs and applications before running.

The four benchmark tasks cover the most common CPU workload types: integer arithmetic (games, compression), floating point (scientific computing, audio/video), memory bandwidth (data processing), and cryptographic operations (security, blockchain).