No more swapping to the hard disk. It’s lovely. I wanted to get the full Gig of RAM, but ended up going with only a half-Gig because it’s so much cheaper. It still ended up being worth it—for the most part if I don’t let Safari run for too long (am I the only one noticing memory leaks in that application?), the HD will completely spin down, and I can surf the web in utter silence.