Socket 478
Encyclopedia
Socket 478 is a 478-contact CPU socket
used for Intel's Pentium 4
and Celeron
series CPUs
.
Socket 478 was launched with the Northwood core to compete with AMD's 462-pin Socket A
and their Athlon XP processors. Socket 478 was intended to be the replacement for Socket 423
, a Willamette-based processor socket which was on the market for only a short time. Socket 478 was phased out with the launch of LGA 775.
processors. It supported the first Prescott Pentium 4 processors and all Willamette Celerons, along with several of the Willamette-series Pentium 4s. Socket 478 also supported the newer Prescott-based Celeron D processors, and early Pentium 4 Extreme Edition processors with 2 MiB of L3 cache
.
Celeron D processors were also available for Socket 478 and were the last CPUs made for the socket.
While the Intel mobile CPUs are available in 478-pin packages, they in fact only operate in a range of slightly differing sockets, Socket 479
, Socket M
, and Socket P
, each incompatible with the other two.
CPU socket
A CPU socket or CPU slot is a mechanical component that provides mechanical and electrical connections between a microprocessor and a printed circuit board . This allows the CPU to be replaced without soldering....
used for Intel's Pentium 4
Pentium 4
Pentium 4 was a line of single-core desktop and laptop central processing units , introduced by Intel on November 20, 2000 and shipped through August 8, 2008. They had a 7th-generation x86 microarchitecture, called NetBurst, which was the company's first all-new design since the introduction of the...
and Celeron
Celeron
Celeron is a brand name given by Intel Corp. to a number of different x86 computer microprocessor models targeted at budget personal computers....
series CPUs
Central processing unit
The central processing unit is the portion of a computer system that carries out the instructions of a computer program, to perform the basic arithmetical, logical, and input/output operations of the system. The CPU plays a role somewhat analogous to the brain in the computer. The term has been in...
.
Socket 478 was launched with the Northwood core to compete with AMD's 462-pin Socket A
Socket A
Socket A is the CPU socket used for AMD processors ranging from the Athlon Thunderbird to the Athlon XP/MP 3200+, and AMD budget processors including the Duron and Sempron. Socket A also supports AMD Geode NX embedded processors...
and their Athlon XP processors. Socket 478 was intended to be the replacement for Socket 423
Socket 423
Socket 423 is a 423 pin CPU socket used for the first generation of Pentium 4 processors, based on the Willamette core.-Technical specifications:This socket houses any processor designed in the Socket 423 package....
, a Willamette-based processor socket which was on the market for only a short time. Socket 478 was phased out with the launch of LGA 775.
Technical specifications
Socket 478 was used for all Northwood Pentium 4 and CeleronCeleron
Celeron is a brand name given by Intel Corp. to a number of different x86 computer microprocessor models targeted at budget personal computers....
processors. It supported the first Prescott Pentium 4 processors and all Willamette Celerons, along with several of the Willamette-series Pentium 4s. Socket 478 also supported the newer Prescott-based Celeron D processors, and early Pentium 4 Extreme Edition processors with 2 MiB of L3 cache
Cache
In computer engineering, a cache is a component that transparently stores data so that future requests for that data can be served faster. The data that is stored within a cache might be values that have been computed earlier or duplicates of original values that are stored elsewhere...
.
Celeron D processors were also available for Socket 478 and were the last CPUs made for the socket.
While the Intel mobile CPUs are available in 478-pin packages, they in fact only operate in a range of slightly differing sockets, Socket 479
Socket 479
Socket 479 is the CPU socket for the Intel Pentium M and Celeron M, mobile processors. Normally used in laptops, but has also been used with Tualatin-M Pentium III processors. The official naming by Intel is µFCPGA and µPGA479M...
, Socket M
Socket M
Socket M is a CPU interface introduced by Intel in 2006 for the Intel Core line of mobile processors.-Technical specifications:Socket M is used in all Intel Core products, as well as the Core-derived Dual-Core Xeon codenamed Sossaman...
, and Socket P
Socket P
The Intel Socket P is the mobile processor socket replacement for Core microarchitecture chips such as Core 2 Duo. It launched on May 9, 2007, as part of the Santa Rosa platform with the Merom and Penryn processors.-Technical specifications:...
, each incompatible with the other two.
Mechanical load limits
All socket (Pentium 4 and Celeron) have the following mechanical maximum load limits which should not be exceeded during heatsink assembly, shipping conditions, or standard use. Load above those limits will crack the processor die and make it unusable.| Location | Dynamic | Static | Transient |
|---|---|---|---|
| IHS Surface | 890 N(200 lbf Pound-force The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :... ) |
445 N(100 lbf Pound-force The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :... ) |
667 N(150 lbf Pound-force The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :... ) |