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Socket 940 - AMD
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Socket 940
General Info
DesignerAMD
IntroductionApril 22, 2003 (launched)
MarketServer
MicroarchitectureK8
TDP110 W
Package
NameCPGA-940
TypeCeramic Pin Grid Array
Contacts940
Dimension40.0 mm × 40.0 mm
Pitch1.27 mm
Socket
NameSocket 940
TypePGA

Socket 940 was the socket for µCPGA-940 and µOPGA-940-packaged AMD Opteron and Athlon 64 FX microprocessors, AMD's first generation of server and workstation processors, based on the K8 microarchitecture. Socket 940 was superseded by Socket F.

The µOPGA-940 package for Socket 940 is mechanically (due to keying) and electrically incompatible with the 940-pin Socket AM2.

Features[edit]

  • 940-pin lidded micro pin grid array, 1.27 mm pitch, 31 × 31 pins, 40 × 40 mm, ceramic or organic substrate
  • 1.15 - 1.55 V supply voltage, 110 W TDP
  • Three (desktop processors one) 16 bit HyperTransport interfaces
    • Up to 800 MHz, 1600 MT/s, 3.2 Gbyte/s in each direction
    • Up to 1000 MHz, 2000 MT/s, 4.0 Gbyte/s in each direction (Rev. E and later)
    • One coherent link on dual processor models 2xx
    • Three coherent links on multiprocessor models 8xx
K8 Opteron MP topology.svg
  • 128/144 bit DDR SDRAM interface up to 166 MHz, PC-2666 (DDR-333), 5.3 Gbyte/s
  • 128/144 bit DDR SDRAM interface up to 200 MHz, PC-3200 (DDR-400), 6.4 Gbyte/s (Rev. C0 and later)
  • Up to 8 RDIMMs, up to 4 Gbyte per DIMM, SEC-DED ECC
  • Chip Kill ECC (server/workstation models)
  • P-States, ACPI C1 (Halt), S1 (Stop Grant), S3 (Core & HT power down), S5 (all power off)
  • Thermal diode, overtemperature protection

Chipsets[edit]

  • AMD 8000 series
  • Nvidia nForce3 Pro250, nForce Professional 2200

Processors using Socket 940[edit]

  • Athlon 64 FX-51/53 codename "SledgeHammer"
  • AMD Opteron 1xx/2xx/8xx "SledgeHammer" (130 nm; Rev. B3, C0, CG; CPGA-940)
  • AMD Opteron 1xx/2xx/8xx "Venus", "Troy", "Athens" (90 nm; Rev. D4, E4; OPGA-940)
  • AMD Opteron 1xx/2xx/8xx dual core "Denmark", "Italy", "Egypt" (90 nm; Rev. E1, E6; OPGA-940)
 List of all Socket 940-based Processors
ModelPriceProcessLaunchedµarchFamilyCoreCTFreqTurboTDP
Count: 0

Package Diagram[edit]

CPGA-940 diag.svg

CPGA-940 package. All dimensions in millimeters.

Socket Outline[edit]

Socket 940 diag.svg

All dimensions in millimeters.

Pin Map[edit]

CPGA-940 pinmap.svg

Notes:

  • HT Link 1 and 2 are only available on server/workstation processors, NC on desktop processors.
  • VLDT is referenced as a unified plane for desktop processors.
  • Pin AK2 PRESENCE_DET is only used for server/workstation processors.

References[edit]

  • "AMD Functional Data Sheet, 940 Pin Package", AMD Publ. #31412
  • "AMD Socket 940 Design Specification", AMD Publ. # 25766
  • "AMD Opteron™ Processor Product Data Sheet", AMD Publ. #23932
  • "AMD Athlon™ 64 FX Product Data Sheet", AMD Publ. #30431
  • Keltcher, Chetana N, et al. "The AMD Opteron Processor for Multiprocessor Servers", IEEE Micro 23(2):66–76, March 2003

See also[edit]

Facts about "Socket 940 - AMD"
designerAMD +
first launchedApril 22, 2003 +
instance ofpackage +
market segmentServer +
microarchitectureK8 +
nameSocket 940 +
tdp110 W (110,000 mW, 0.148 hp, 0.11 kW) +