Intel Limits Socket 478 Processors' Evolution to 3.40GHz@ 2004/01/24
All Intel Pentium 4 processors starting from 3.60GHz will come in LGA775 packaging and will not be compatible with existing Socket 478 infrastructure. For the latter, the Santa Clara, California-based CPU maker will offer Pentium 4 “Northwood” 3.40GHz processors with 512KB L2 cache and 800MHz Quad Pumped Bus as well as Pentium 4 “Prescott” 3.40GHz processors with 1MB L2 and 800MHz PSB.
It is not fully clear why Intel decided to cancel 478-pin Pentium 4 “Prescott” processors 3.60GHz provided that some mainboards were capable of supporting the chip which dissipates up to 103W of heat.
According to certain estimations, there will be 8%, 32% and 45% of LGA775 processors in Intel’s desktop lineup in Q2, Q3 and Q4 respectively. Obviously, a substantial part of such chips will be top-end Pentium 4 processors at first.