Well, I rarely have just one app open, and when I had my iMac at just 512MB, I found Word to be intolerable. Of course, Rosetta's been improved since then, and definitions of "acceptable" vary.Sorry disagree. I have no issues writting a PhD Thesis sized document with 512mb ram on an intel mac under rosetta with word. Maybe your definition of fine is different to mine.
What matters for you is that you are happy with it (which is good