Can my nvidia 1024mb 450 gt play diablo 3 with high settings

probably yes, i didn't played the beta yet, but by what i've seen it is a very "light" game, it will run on low end desktops without problem, so i think a 450 will handle it very well.

once the game is out you'll be able to get much more concrete data than people taking a guess on the scalability between full retail and beta versions