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Celeron D
Celeron D logo as of 2006.
[edit] Prescott-256
The first Celeron D processor is based on the Prescott Pentium 4 core and has a larger (than the previous NetBurst Celerons) 256 KiB cache. It also features a 533 MT/s bus and SSE3, and a 3xx model number (compared to 5xx for Pentium 4s and 7xx for Pentium Ms); specifically, they have been released thus far bearing model numbers of 355 (3.33 GHz), 350 (3.2 GHz), 345 (3.06 GHz) 340 (2.93 GHz), 335 (2.80 GHz), 330 (2.66 GHz), 325 (2.53 GHz), 320 (2.40 GHz), 315 (2.26 GHz), and 310 (2.13 GHz). They also have hardware-level support of Intel's EM64T technology by virtue of it also being built into the Prescott core, although the feature is disabled in all 3x0/3x5 models (with the exception of the Celeron D 355). It has been activated in all 3x1/3x6 models. The Intel Celeron D processor works with the Intel 845 and 865 chipset families. It should be noted that the "D" suffix actually stands for nothing. This name was assigned by Intel in order to differentiate this generation of Celeron from its predecessors.[1] It should also be stated that unlike the Pentium D, the Celeron D is not a dual core processor.
In mid-2005, Intel refreshed the Celeron D with EM64T and XD Bit (eXecute Disable) enabled. Model numbers increase by 1 over the previous generation (e.g. 330 became 331), and were only manufactured for LGA 775.
In Intel's "Family/Model/Stepping" scheme, Prescott Celeron Ds and Pentium 4s are family 15, model 3 (up to stepping E0) or 4 (stepping E0 onwards), and their Intel product code is 80546 or 80547, depending on socket type.
[edit] Cedar Mill-512
Based on the Cedar Mill Pentium 4 core, this version of the Celeron D continues the 3xx naming scheme with the Celeron D 347 (3.06 GHz), 352 (3.2 GHz), 356 (3.33 GHz), 360 (3.46 GHz), and 365 (3.6GHz) and retains the Prescott-V's feature set, except with double the L2 cache (512KB) and based on a 65nm manufacturing process.
In Intel's "Family/Model/Stepping" scheme, Cedar Mill Celeron Ds and Pentium 4s are family 15, model 6, and their Intel product code is 80552.
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