Pentium is a brand used for a series of x86-compatible microprocessors produced by Intel. In its most current form, a Pentium processor is a consumer-level product with a two-star rating, above the low-end Atom and Celeron products but below the faster Core i3, i5 and i7 lines as well as the high-end Xeon processors.

The name Pentium is originally derived from the Greek word pente (πέντε), meaning "five" (as the original Pentium processors used Intel's fifth-generation microarchitecture, the P5), and the Latin ending -ium. The current Pentium processors only share the name but are in fact based on the same processor chips that are used in the Intel Core but are typically used with a lower clock frequency, a partially disabled L3 cache and some of the advanced features such as hyper-threading and virtualization disabled.

Read more about Pentium:  Overview, History, Pentium Compatible Intel Processors, See Also