MacWorld has taken a look at the inner parts of Apple's new Intel Core Duo based Mac mini:
From this vantage point, the Mac mini hasn’t changed much from its previous version. However, there’s one gigantic change that may not be apparent from this angle: the easily-accessible RAM slot on the left side (A) is gone. Or to be more accurate, they’ve been turned on their side and hidden from view. (More on this in a moment.) On the far side of the case you can see the new infrared receiver (B) right at the end of the optical-drive slot..