I use an AMD 1.6 GHZ powered netbook with 2GB RAM running Arch Linux. Chromium is unbearably slow after opening a few tabs. Firefox chugs along just fine.
I have always noted that behavior, Chrome has a better memory management with a few tabs opened, but if you start opening a bunch of them, then Firefox clearly wins the memory battle.
That's probably because it shares memory between tab processes, since each tab is not in its own sandbox like in Chrome. Personally, I prefer the security of tab sandboxes.
