what is apu?
An APU is an AMD processor (CPU) with embedded graphics capabilities. GPU : Graphics Processing Unity. APU : Advanced Proccessing Unit is specific to AMD (Intel also has the same thing but it has a different name). APU is, essentianly and CPU and a GPU combined into the the CPU body. e.g. say you are using a calculator app on your pc, the CPU side of the APU is calculating all the numbers and logic, while, on the same piece of hardware the GPU side of the APU is rendering on the answers and text and imagrey on your screen.