What Does General-Purpose Graphics Processing Unit (GPGPU) Mean?

A general-purpose graphics processing unit (GPGPU), is a graphics processing unit (GPU) processor that is used for purposes other than rendering graphics. The emergence of the GPGPU has to do with the evolution of computer processors over the past few decades.

Techopedia Explains General-Purpose Graphics Processing Unit (GPGPU)

The first and most primitive processor was the central processing unit (CPU). CPU metrics are still used to talk about computer processing in virtualized environments or other setups, but the CPU is not the only choice available anymore.