John5200.. best chess engines don't have any precalculated data..
Search for "Rybka vs Fritz" for example and have a nice look of play of two different engines, both of which don't have any precalculated data
PS: the "32GB for hash table" in your quote is amount of RAM needed, not size of installer. It can be saved to HDD, yeah, but it's not on the disk in the first place.