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GPU-Z vs Speccy: catalog facts
GPU-Z	Speccy
Free Freeware from TechPowerUp. The source is not published.	Freemium A free version is available. Speccy Professional is a paid licence.
Windows	Windows
Reports adapter, GPU, display and detailed memory subsystem information A load test that verifies the PCI Express lane configuration actually in use	One page answers what hardware is in the machine and how hot it is Snapshots can be saved or shared when asking for help
Windows only Closed source freeware	Development has slowed considerably The Professional edition with automatic updates is paid
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.