If you want a browser that just a browser how about you just don't use any of the additional plugins. The memory consumption thing still is moot. You either have enough memory in your computer for tabbed browsing or you don't. Some people like having 20+ tabs open in firefox or any tabbed supporting browser. 20+ tabs is going to be about 700mb of ram in use just for the web browser. A tab taking up memory is not something to take lightly either. Just like how you can open up as many instances of firefox running at the same time, opening up a tab in firefox or any browser that supports tabbed browsing is exactly the same as opening up a new instance of firefox that isn't a tab.
A browser that supports tabbed browsing is really just a browser that's also its own mini task bar for all of the different running instances of itself.
If you're complaining about memory usage, that's fine, but it's still moot, depending on how many tabs you have open at once and where each of those tabs is at a different web page memory usage will differ. Having 10 tabs open to google.com wont take much memory, but having the same 10 tabs open to myfreepaysite.com will probably take more memory than google will. Depending on your computers memory, you'll obviously be adjusting the amount of tabs you have open, and even more greatly...the sites you go on the internet since other web pages will zap more memory than others from your system.
As far as clutterless chrome goes, it looks to be about as cluttered as firefox with the bookmark bar disabled. Netbooks work fine with firefox and the default 1gb of ram they come with. You obviously don't want to have 20 tabs open at once given that memory capacity but 10,12, max 15 is doable. My eeepc 900ha i upgraded to 2gb of ram does even better with multiple tabs in firefox and is able to handle more tabs with the memory increase i gave it.
Memory consumption is still moot because for some reason you don't want to realize that web browsers have been memory hogs from the start and there's not much to be done about it. There's the program itself and what it supports for the web pages you go to. Will your magical barely using any memory browser have support for flash, steaming audio, animated gifs, silverlight, colors, all of the html standards (including the ones microsoft invented that aren't part of the html standards), and all this other ****? How secure is your browser going to be? What protocols would you like your broswer to support? What features would you like your browser to support. Don't forget the web pages you'll be going too what do you want to have display in your web browser that will work and wont work for the sake of memory consumption? Luckily supporting **** is easy, but the problem is when the **** you support gets ****ing stupid.
Click here and tell me if it's the content on the internet or the browser itself for the memory consumption.