Rockstar North has had development kits since August 2005. Rockstar North has developed a completely new Game engine for GTA 4 on the PS3. They use the high data transfer range of the CELL CCU to use RSX GPU at the same time and Blu ray Disc around several Streams of game information. The city in GTA 4 will look as realistic as a real city, equally humans are to behave more realistically.
The Rockstar reps explained that the game was running on RAGE, the Rockstar Advanced Game Engine. This is the graphics technology gamers are to expect from future Rockstar games, including the next "GTA."
podeis leer mas en : http://gta-sanandreas.com/