At the heart of Sony Computer Entertainment’s breakthrough PLAYSTATION 3 system is the Cell Broadband Engine (Cell BE) processor. The Cell BE is a multi-core processor employing a PowerPC processor element (PPE) and seven synergistic processor elements (SPE) to provide supercomputer capability in a home computer entertainment system. The Cell BE is capable of 218 GFlops performance.
PS3 as we all know is powered by 256mb of GDDR3 RAM and 256mb of XDR at ultrafast speed of 3.2ghz. The XDR RAM has a very low latency and is more efficient than contemporary PC RAMs.
So what exactly is XDR RAM and why is it superior to conventional PC RAM?