N520SL-1GI features Phys X technology, which is the next big thing in gaming! Delivering physics in games is no easy task. Its an extremely compute-intensive environment based on a unique set of physics algorithms that require tremendous amounts of simultaneous mathematical & logical calculations. The best way to get real-time physics, such as explosions that cause dust & debris, characters with life-like motion or cloth that drapes & tears naturally is with an NVIDIA Phys X-ready Ge Force processor.