yesterday i made a quick snapshort of Opera window to show a member on how he can free up the taskbar space if he uses a tab-style interface web browser instead of using IE. anyway, while doing that i was thinking of making this CPU Usage test, since i have seen many questions have been rised about the Opera CPU usages.
i know this is seem to be a bit overdoing it, and i don't want you to do this at home if you are not sure.

__________________
Q9300 @ 500FSB
Q9300 @ 3.60GHz
4x1GB DDR2-1333 (PC2-10666)
-------------------------------------------------
Don't worry overly much about whether a specific KB article exists for your version of Windows.
Standard practice is to grab whatever's available and apply the principles.
(I grabbed from the web. Written by someone, somewhere on the web)