I've been told that some processors can handle only 2 GB of RAM, others up to 4. How do you tell? What other factors influence this?
This is helpful. So the next question is how do you identify the chipset and how much memory it can address? How is the chipset different from the processor. A link to a concise dictionary of these technical words might do the trick.
The TPS (Technical Product Specification) lists the chipset, how much memory the board supports, and has a glossary of terms in the back. All the answers, in one document!