Eh, does the RAM usage of a single browser window even matter on modern systems?
Anecdata, but I open Pandora in it's own window, then minimize it. This makes it pretty easy to find if you have a hundred+ tabs open at once like I often find myself with.
I currently have 44 tabs open, including Pandora in it's own window, and Chrome is only using ~2GB of RAM - perfectly acceptable to me.
