Originally Posted by chrestomanci
The big heat sink next to the RAM slots is the Northbridge. The CPU socket is further from the RAM at the front of the board. The position of the RAM, CPU and Northbridge are all part of the standard, and cannot be moved.
Hmm. Here's a picture of a prototype AMD BTX board, not sure if it ever got to market
The positioning of the CPU, RAM and Northbridge are rather different.