Exactly, but in the minds of Ebay sellers 3GHz dual core --> 6GHz dual core.
Quite how they work that out I don't know, but it's a valid point.
I overlooked it - too used to just halving the speeds all the time to get past that.
Edit: yes, that board will work fine with either processor.
And to have writing as a link, use {url=yourlink.com}your text{/url} and replace { with [, } with ].
Hope this helps.