(1) (
MULTIple-
Graphics 
Processing 
Units)  Using two or more graphics cards in the same PC to support faster animation in video games.  NVIDIA's Scalable Link Interface (SLI) and ATI's CrossFire are examples.  See 
gaming PC, 
GPU, 
SLI and 
CrossFire.
(2) (
MULTIple-
Graphics 
Processing 
Units)  Using several GPUs for high-performance computing.  See 
GPU.