CPU Performance API Playground

Interactive playground for the CPU Performance API JavaScript reference implementation. Enter a CPU model string and a logical core count to see how the implementation would classify the device.

navigator.cpuPerformance
0
Manufacturer
unknown
Normalized model
(empty)
Cores-only tier
0
Your browser’s values
navigator.cpuPerformance: Checking…
navigator.hardwareConcurrency: Checking…
navigator.deviceMemory: Checking…