System Diagnostics for CPU, GPU and Battery

It uses JavaScript browser APIs (Navigator, Performance, WebGL, Battery Status, Storage Manager, Network Information) to gather device data.

Browsers intentionally limit access to detailed hardware info for security and privacy. The tool shows what's available: core count, approximate RAM, GPU renderer name via WebGL, and more.

Five measured axes: CPU speed (32 points), cores (10), memory (16), graphics (28) and screen (14). What the browser cannot report is excluded from the maximum instead of scoring zero — so fewer APIs do not cost your device points — and the breakdown under the ring shows which axes were left out. Battery, free space, connection and page-load time are deliberately not in the number: they change between two runs on the same machine, so they are listed as separate findings. No browser can see a system fault — a bluescreen or a failing disk will not show up here.

Four workloads in a Web Worker (a background thread): integer arithmetic, sorting a Float64 array, a strided walk over 8 MB of memory, and floating-point accumulation. It avoids Math.sin and Math.cos on purpose — those run about three times apart between browser engines, and dropping them cut the spread between browsers on one machine from 1.71× to 1.17×. It starts by itself as part of the scan.