Have a look at our page "Compatibility - The Beast" that has been updated with new compatible motherboards as well as compatible spreaders.
Thanks to its design, The Beast is compatible with all motherboards checked so far. We won't list all motherboards available on the market - it would be time consuming - but the compatibility section highlights the most famous boards (=the best sellers) in ATX, micro-ATX and mini-ITX formats. If you can't find a specific reference, feel free to ask!
This section is updating as soon as new compatibilities are validated. Six different spreaders are available for now. They cover 2060-2070-2070S-2080-2080S-2080Ti-3080-3090 ranges.