If you press F11 you can fullscreen Chrome so making the most of your resolution. You can do this with IE as well - not sure about FF but I'm sure you can. Nice little tip if you didn't know.
Just noticed my chrome is using about 500MB+ of memory.
only 12 tabs.....
I don't see how that's going to be much different.
Doesn't matter how many tabs you have open. You could have 500MB taken up with a single tab depending on the page content.
Actually the number of tabs make a big difference as Chrome spawns new processes with the tabs that have overheads.