Intel Core i7 is an Intel brand name for several families of desktop and laptop 64-bit x86-64 processors using the Nehalem microarchitecture that are marketed for the business and high-end consumer markets. The Core i7 brand is intended to differentiate these processors from Core i5 processors intended for the main-stream consumer market and Core i3 processors intended for the entry-level consumer market.
Core i7 is a successor to the Intel Core 2 brand. The Core i7 identifier was first applied to the initial family of processors codenamed Bloomfield introduced in 2008. In 2009 the name was applied to Lynnfield and Clarksfield models. Prior to 2010, all models were quad-core processors. In 2010, the name was applied to dual-core Arrandale models, and the Gulftown Core i7-980X Extreme processor which has six hyperthreaded cores.
Source [Wikipedia]
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