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Definition: Pentium D

One of Intel's first dual-core 64-bit Pentium CPUs. Introduced in 2005 along with the Pentium Processor Extreme Edition 840, they both share the Intel 64 64-bit technology, but the Pentium D does not include Hyper-Threading. The Pentium D's two execution cores provide two completely parallel processing streams. See dual core and Pentium Processor Extreme Edition.

Twice the Size
The two Pentium 4 cores take up twice as much real estate on the die as one core. (Image courtesy of Intel Corporation)