The difference between superscalar and pipelined architectures


They seem exactly the same to me, but the wikipedia page on Superscalar CPU architectures says "While a superscalar CPU is typically also pipelined, pipelining and superscalar architecture are considered different performance enhancement techniques."

Best Answer

The wikipedia articles for pipeline and supercalar explain these quite good.

Simply put, a pipeline starts the execution of the next instruction before the first has completed - but instructions are executed still in series and in order.

A superscalar architecture can start two or more instructions in parallel in one core, and independent instructions may get executed out-of-order.