A more reasoned and scientific answer than mine 😜One main thing, the gigabyte only has 2 on board USB headers, so you can only attach 2 devices.
If you've got a corsair cooler and AX200 wifi card, that's 2 gone and you've got none left for the case USB's.
It's also significantly worse VRM capabilities. It wouldn't be suitable for the 5900x which requires much tighter voltage regulation to maintain boost clocks, so you'd likely see limited boosts.