Where is my lean browser for browsing gone to?

Hi all,

i'm surfing a lot in the net. I do some web development. Sometimes there are 10 to 20 Tabs opened ... and my CPU Fan is roaring at me. Time to buy a new computer? Well ... no! I don't get it why a browser with 20 opened tabs eats up 4 Gig of RAM and spikes my CPU to 100%?

So i'm looking for a cool browser that does just this: browsing. No fancy development stuff included. A FireFox Light. Have you seen it? Pleas leave a comment!

IF something like this is none existent, who is willing to help me building a fork of some browser to make surfing the web fun again?

Greets, Chris

p.s. i'm currently using Chrome, Safari and Firefox. Some Plugins like Popup Blocker installed. all eat up TOO much ram while doing, in my view, nothing.