Shoutbox

As far as I know, dual-core is the same as having two CPUs.
(Somebody correct me if I'm wrong!)

The difference in technology is that you only have one CPU chip, therefore you don't need to buy a 2 CPU motherboard (which are normally only for servers [and are very expensive compared to single CPU motherboard with the same functionality]). The other difference is of course that with two CPUs you can have a higher frequency (since the core is physically double the size and they have produced better CPUs).