“With the onboard memory controller on the Athlon 64, it scales in speed along with the processor which means that latency is minimized. The links to I/O and memory are also independent which means there is no bandwidth contention. This has also allowed AMD to keep the socket fairly consistent as there has already been two updates to the memory controller, none of which required a new board. Prior to the Athlon 64, memory controller duties were taken care of by the Northbridge thus the processor communicates with the memory through the front side bus. With the 925XE, Intel has tried to address bandwidth limitations by raising the FSB speed from 800Mhz to the 1066Mhz.”
Check out the full review at Neoseeker.