A lack of saliva can even make it harder for you to digest food or talk. To treat dry mouth, your doctor may ask you to stop taking any medicines that are causing it. The doctor may also recommend medicines that stimulate saliva production.
Erik Fair, Software Engineer, Investor, skier. A Graphics Processing Unit (GPU) is a special purpose processor, optimized for calculations commonly (and repeatedly) required for Computer Graphics, particularly SIMD operations.
They are accelerator cards. The easiest way to explain it is through this http://www.nvidia.com/object/what-is-gpu-computing.html. Essentially the work load is handed off to the GPU rather than the CPU to do all the work. The video at the bottom is not only entertaining, but surprisingly good at explaining it.