ShackNews reports Sony held a demonstration of Gran Turismo 5 Prologue running on four PlayStation 3 consoles, to make the game run at 2160p (3840 x 2160 pixels) resolution with a framerate of 240fps:
The high-resolution display and the super-smooth display, which were separate demonstrations, each used four PlayStation 3 consoles in tandem to produce the on-screen image.
The 2160p screen used the systems to each draw one quarter of the screen at a normal HD 1080p resolution, and the images were combined on the fly using a high-end Sony digital cinema projector to show a high-quality image on a 220-inch screen.
As for the 240 frames per second demonstration, a Sony prototype screen using FED technology combined four PS3 systems each running 1080p at 60 frames per second. Consecutive frames were staggered across consoles, allowing the display to show 240 frames in one second, providing what was described as a very life-like display.