[H]ard|OCP take a look at what'll be powering the graphics in the new XBox 360
Many of you read that the Xbox 360 will have 512MB of GDDR3 RAM and that is 100% correct. But how exactly does this work with the CPU and GPU. Once you learn that the Xbox 360 GPU also acts as the system’s memory controller, much like the Northbridge in an Intel PC, the picture becomes a bit clearer.
[The article]