Like I said I'm in no way a browser or web expert. I only have a notion of what could potentially fit in a certain amount of memory, and when I look at webpages I'm at least an order of magnitude off, in the wrong direction. This is why I'm worried. I sure hope I'm completely wrong!
To be honest, I don't really address where your 3GB for Chrome is going. All those memory figures you see should be taken with a pinch of salt. Reserving address space, using it and such are not so straightforward to untangle.
