Ageia, founded in 2002, was a fabless semiconductor company. In 2004, Ageia acquired NovodeX, the company who created PhysX – a Physics Processing Unit chip capable of performing game physics calculations much faster than general purpose CPUs; they also licensed out the PhysX SDK (formerly NovodeX SDK), a large physics middleware library for game production. On February 4, 2008, Nvidia announced that it would acquire Ageia. On February 13, 2008, the merger was finalized. The PhysX engine is now known as Nvidia PhysX, and has been adapted to be run on Nvidia's GPUs.