Alright, first of all, yes, I understand all of that regarding notebooks getting hotter faster and staying much warmer than a desktop where air can flow more freely and escape much quicker.
As for my 3 browsers and the dozens of tabs that I like to keep open, that's something I simply got used to with my iMac. I had the space and it's super convenient and the "why not" factor applies too. And yes, I AM using all THREE browsers because I enjoy the different features in Safari, Firefox and Chrome. I use all three of them all the time and I constantly switch between them. I was even thinking of adding Opera. lol...
At any rate, I didn't know this would become an issue when I switched from my last iMac. I haven't mentioned this one until now but I'm NOT referring to the Quad Core i7-870 2.93GHz, because I sold it for a lot of bling but that's a story for another day. Before my 17" MBP, I actually had the entry level 2010 27" iMac w/ 10GB of RAM, which was an experiment on my part to see how I would do with a dual-core with a higher clock, but still hyper-threaded, i.e. the Core i3-550 3.2GHz. I feel ridiculous typing this, but in some ways, the iMac with the Core i3 sometimes felt a bit "snappier" than the high-end Core i7-2820QM Quad that I have now. And, mind you, that particular silicon will turbo ALL FOUR cores all the way up to a full 3.0GHz, temperatures and couple of other conditions permitting. When there is an app that uses only two cores, it turbos even higher (up to 3.2GHz) and single-core apps can run at a staggering 3.3GHz with the i7 that's in the new 2011 17" MacBook Pro as well as the high-end 15" one. And that's not to mention the higher-end graphics card. The 17" MBP has a full 1GB of GDDR5 discrete memory and the i3 iMac only had half that!
Having said all of that, I have to wonder that when, let's say, I wanted to play one of those highly intensive games that actually needs and uses all of this horsepower (i.e. a Core i7 Quad w/ Turbo Boost as well as a full 1GB of AMD's latest generation (6000 series) graphics card). What good will all this power do when temperatures won't even allow it fore more than a few seconds anyway and I do mean seconds because this baby heats up really fast! Maybe a Core i7 Quad is "too much" of a good thing here?
What say you? Am I totally missing something and if do, what is it?