Which precompiled version should I use?

As of YAFU version 3.00, the following precompiled versions are available. Report issues on Mersenne Forum or Github.

SSE41, AVX2, AVX512, and AVX512-IFMA refer to instruction set extensions that the versions respectively support.
SIQS, ECM, and YAFU's prime sieve all get progressively faster with more modern extensions.
See here for more information:
https://en.wikipedia.org/wiki/Advanced_Vector_Extensions
https://en.wikipedia.org/wiki/AVX-512#CPUs_with_AVX-512

Pick the best one that your CPU supports.

Roughly speaking:

• If you have an Ice Lake, Tiger Lake, Rocket Lake, or Sapphire Rapids CPU, use AVX512-IFMA.
• If you have an Intel SkylakeX or certain Cannon Lake or Cascade Lake CPUs, use AVX512.
• If you have an Intel Haswell CPU or newer (newer than 2013), use AVX2.
• If you have an AMD Zen4 or Zen5 CPU, use AVX512-IFMA.
• If you have another AMD CPU newer than 2015, use AVX2.
• Otherwise use SSE41.