Helping his cousin choose the new Windows 7 Home Premium PC that will finally replace that old Windows XP Home thing (originally ME!). In fact, it will have quad-core and 10+ times the capacity/quantity of virtually everything else on the old one!
You've already found your answer, but the limit is physical processors, not cores which are covered no matter how many there are. This is the direction of the future, with multiple cores taking the place of clock speed as the method to scale and increase overall processing speed. Overclocking is simply a dead idea, the new idea is cool, fast and non-blocking.
If you want the info from the source, here's the Microsoft page on the matter:
http://www.microsoft.com/licensing/a...licensing.aspx
Bitman