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y-cruncher vs Prime95: catalog facts
y-cruncher	Prime95
Free Freeware, free to download and use.	Free Free to download and use under the GIMPS free software license.
Windows, Linux, Command line	Windows, macOS, Linux
Scales across many CPU cores Established benchmark with published fastest times	Standard, demanding CPU and memory stress test Builds for Windows, macOS, Linux and FreeBSD
Closed source freeware Large computations need a lot of memory and disk space	Not an OSI open source license Dated interface
Downloadable app	Downloadable app
Closed source	Closed source
License: Freeware	License: GIMPS free software license
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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