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y-cruncher vs Memtest86+: catalog facts
y-cruncher	Memtest86+
Free Freeware, free to download and use.	Free Free and open source under the GPL v2.
Windows, Linux, Command line	Windows, Linux
Scales across many CPU cores Established benchmark with published fastest times	Runs without an operating system, from BIOS or UEFI Supports 32-bit and 64-bit x86 plus LoongArch64
Closed source freeware Large computations need a lot of memory and disk space	Requires rebooting the machine to run a test No ARM support
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License: GPL-2.0
No account needed	No account 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.