One other big difference is the chipset layout that Intel uses. Intel uses Northbridge and Southbridge chips to allow the CPU to communicate with all the other devices.
The Northbridge is directly connected to the CPU FSB. The NB also connects to other high speed devices, like the AGP or PCI-E x16 bus, and to the memory (RAM) controller. It also supplies a link to the Southbridge.
The SB is what connects all of the slower devices, like regular PCI slots, or IDE controllers, or SATA controllers.
This is different from AMD which uses an on-die memory controller, and a "chipset" which controls the rest.
I know I'm gonna take some criticism for this, but here goes:
OMG! THats all wrong, MacDude! Hahaha. That looks fine to me. Good work!