Pentium D and Core 2 Duo are two families of dual-core processors that are made by Intel Corp. Both families are made up of several models that differ in specifications.
History
The first member of the Pentium D family was introduced by Intel in 2005. The Core 2 Duo family was introduced a year later, in 2006.
Pentium D
The Pentium D family consists of 13 models. The processing speeds (the amount of cycles per second a processor can accomplish) of the Pentium D are superior to those of Core 2 Duo family, with speeds that range from 2667 MHz (model 805) to 3600 MHz (model 960). Generally, faster processing speeds provide computer users with faster performance. Compared to the Core 2 Duo, the Pentium D consists of models that are inferior in bus speed (the rate at which data transfer is allowed between a processor and RAM), with speeds of 533 MHz or 800 MHz. The Pentium D also falls behind in L2 cache sizes, with capabilities of 2048 kilobytes and 4096 kilobytes. Core 2 Duo shares the same socket type of the Pentium D, Socket 775.
Core 2 Duo
The Core 2 Duo family has 29 models that range in processing speeds from 1600 MHz to 3333 MHz. The Core 2 Duo has bus speeds of 800 MHz, 1066 MHz, and 1333 MHz. They also have L2 cache sizes of 2048, 3072, 4096 and 6144. The Core 2 Duo family requires less wattage (power) than the Pentium D. All models require 65 watts, compared to the 95- or 130-watt requirement of the Pentium D.
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