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Slot 1 refers to the physical and electrical specification for the connector used by some of Intel's microprocessors, including the Celeron
Celeron

The Celeron brand is a range of x86 CPUs from Intel targeted at budget/value personal computers?with the motto, "delivering great quality at an exceptional value"....
, Pentium II
Pentium II

The Pentium II brand refers to Intel's sixth-generation microarchitecture and x86 architecture-compatible microprocessors introduced on May 7, 1997....
 and the Pentium III
Pentium III

The Pentium III brand refers to Intel's 32-bit x86 desktop and mobile microprocessors based on the sixth-generation Intel P6 microarchitecture introduced on February 26, 1999....
. Both single and dual processor configurations were implemented.

Slot 1 was a departure from the square Zero Insertion Force PGA/SPGA sockets used for the Pentium
Pentium

Introduced on March 22, 1993, the original Pentium was the first superscalar x86 architecture microprocessor. Its fifth-generation x86 microarchitecture was a direct extension of the 80486 architecture with dual integer pipeline s, a faster FPU unit, wider data bus, and features for further reduced address calculation latency....
 and earlier processors. Instead, the processor is mounted on a Single Edge Contact Cartridge (SECC), much like a PCI
Peripheral Component Interconnect

The PCI Local Bus , or Conventional PCI, is a computer bus for attaching computer hardware in a computer. These devices can take either the form of an integrated circuit fitted onto the motherboard itself, called a planar device in the PCI specification or an expansion card that fits into a socket....
 slot, but with a 242-lead edge-connector.

The Slot 1 specification allows for higher bus rates than Socket 7
Socket 7

Socket 7 is a physical and electrical specification for an x86-style Central processing unit socket on a personal computer motherboard. The socket supersedes the earlier Socket 5, and accepts Pentium microprocessors manufactured by Intel, as well as compatibles made by Cyrix/IBM, AMD, Integrated Device Technology and others....
.






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Slot 1 refers to the physical and electrical specification for the connector used by some of Intel's microprocessors, including the Celeron
Celeron

The Celeron brand is a range of x86 CPUs from Intel targeted at budget/value personal computers?with the motto, "delivering great quality at an exceptional value"....
, Pentium II
Pentium II

The Pentium II brand refers to Intel's sixth-generation microarchitecture and x86 architecture-compatible microprocessors introduced on May 7, 1997....
 and the Pentium III
Pentium III

The Pentium III brand refers to Intel's 32-bit x86 desktop and mobile microprocessors based on the sixth-generation Intel P6 microarchitecture introduced on February 26, 1999....
. Both single and dual processor configurations were implemented.

Slot 1 was a departure from the square Zero Insertion Force PGA/SPGA sockets used for the Pentium
Pentium

Introduced on March 22, 1993, the original Pentium was the first superscalar x86 architecture microprocessor. Its fifth-generation x86 microarchitecture was a direct extension of the 80486 architecture with dual integer pipeline s, a faster FPU unit, wider data bus, and features for further reduced address calculation latency....
 and earlier processors. Instead, the processor is mounted on a Single Edge Contact Cartridge (SECC), much like a PCI
Peripheral Component Interconnect

The PCI Local Bus , or Conventional PCI, is a computer bus for attaching computer hardware in a computer. These devices can take either the form of an integrated circuit fitted onto the motherboard itself, called a planar device in the PCI specification or an expansion card that fits into a socket....
 slot, but with a 242-lead edge-connector.

The Slot 1 specification allows for higher bus rates than Socket 7
Socket 7

Socket 7 is a physical and electrical specification for an x86-style Central processing unit socket on a personal computer motherboard. The socket supersedes the earlier Socket 5, and accepts Pentium microprocessors manufactured by Intel, as well as compatibles made by Cyrix/IBM, AMD, Integrated Device Technology and others....
. Slot 1 motherboards use the GTL+ bus protocol.

Some Pentium-II 350MHz and 450MHz processors, and all slot-1 Pentium-III's, came in the improved SECC2 variety. The SECC2 package varied from the original SECC package by removal of the heat-plate connected to the CPU via a thermal interface, used less raw material, was lighter, and could be produced at lower cost.

It should be noted that while SECC2 retention clips will hold a SECC package, SECC clips will not hold an SECC2 package. The Slot A
Slot A

Slot A refers to the physical and electrical specification for a 242-lead single-edge-connector used by early versions of AMD's Athlon processor....
 standard used by AMD was mechanically identical but electrically incompatible.

See also

  • Slot A
    Slot A

    Slot A refers to the physical and electrical specification for a 242-lead single-edge-connector used by early versions of AMD's Athlon processor....
  • Slot 2
    Slot 2

    Slot 2 refers to the physical and electrical specification for the 330-lead edge-connector used by some of Intel's Xeon#Pentium II Xeon and certain models of the Xeon#Pentium III Xeon....
  • List of Intel CPU slots and sockets.


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