HOW GPUS ACCELERATE APPLICATIONS
GPU-accelerated computing offers unprecedented application performance by offloading compute-intensive portions of the application to the GPU, while the remainder of the code still runs on the CPU. From a user's perspective, applications simply run significantly faster.
- See more at: http://www.nvidia.com/object/what-is-gpu-computing.html#sthash.OvsDfK9Q.dpuf