Browser Memory Usage

Surprising to me how much difference is between three major browsers memory consumption rendering the same pages.

I loaded up two pages in;
FireFox 3.0.10
Internet Explorer 8.0.7100.0
Google Chrome 2.0.172.30

The memory difference is 10 fold. Firefox is over 250 MB, IE around 60MB (each tab gets its own process its seems in IE8) and Chrome around 20MB.

Wow. One would figure the Mozilla team would do something about that. Seems to me that something with memory management really isn't being done correctly.