Here are a few photos for comparison.
The first photo is of my 10-year-old Beaumont Macadamia Tree. The second photo is of my six year old Alba Macadamia Tree.
The Alba is almost as tall and wide as my Beaumont but the Alba is a much younger tree. The alba also has higher production of nuts compared to the Beaumont with larger nut size.
The Beaumont has the advantage of being a more attractive tree overall but like all things, there is a tradeoff. Since I have both I would recommend an Alba Tree for production, faster growth, and larger nut size.
Johnny
Beaumonnt Macadamia Tree 11-22-2020
Alba Macadamia Tree 11-22-2020