My highly educated opinion is that I'm not even sure what the "turbo" feature does exactly other than I sometimes get a pop up saying "you appear to have a slow connection try the turbo etc. etc.)
I'm sure all the info is on the Opera site somewhere but I just haven't got round to looking for it. I'd be interested to know how engaging this feature might impact on other things though such as memory use, if anything?
I'm still in love with the new skin - my wife says I should marry the computer. I can take a hint