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19.12.1  Intel Core 2 Quad Extreme QX6xxx series processor (Kentsfield XE)

Identification


Model name: Core 2 Quad Extreme QX6xxx series.
Code name: Kentsfield XE.
Supplier: Intel.
Component class: CPU.

Generation


Generation: Core 2.

Compatibility


Quad-core technology: two Dual-Core dies in SMP (Symmetric Multi-Processing) configuration (Dual-Chip Module, DCM).

64 bit technology: EM64T.

Multimedia instruction sets: MMX, SSE, SSE2, SSE3, SSSE3.

Cache


L1 cache: (4x) 32 kbyte instruction cache, 32 kbyte data cache (Harvard architecture).
Two-by-two shared L2 cache: (2x) 4 Mbyte.

Architecture


266 MHz QDR bus.

Memory protection: XD bit.

Protected program execution environment: Trusted Execution Technology (TXT; LaGrande Technology, LT).

Virtualization Technology (VT, Vanderpool).

Multi-processing


Quad-core technology: two Dual-Core dies in SMP (Symmetric Multi-Processing) configuration (Dual-Chip Module, DCM).

Multiplier


Unlocked clock multiplier (x6 - x16).

Power management


Power management:

  • Enhanced Intel SpeedStep Technology (EIST),
  • Enhanced Halt State (C1E).

Clock speed


Clock speed Model Multiplier Temperature Introduction Cancellation Order part numbers
266/2667 MHz Intel Core 2 Quad Extreme QX6700 CPU 10 (unlocked) max. 65 °C November 2006   OEM (stepping B3): HH80562PH0678M,
PIB (stepping B3): BX80562QX6700
266/2933 MHz Intel Core 2 Quad Extreme QX6800 CPU 11 (unlocked) stepping B3: 5-54.8 °C,
stepping G0: max. 64.5 °C
April 2007 May 2009 OEM (stepping B3, G0): HH80562PH0778M,
OEM (stepping G0): HH80562XH0778M,
PIB (stepping B3, G0): BX80562PH0778M,
PIB (stepping G0): BX80562QX6800
333/3000 MHz Intel Core 2 Quad Extreme QX6850 CPU 9 (unlocked) max. 64.5 °C July 2007 May 2009 OEM (stepping G0): HH80562XJ0808M,
PIB (stepping G0): BX80562QX6850

Physics


Voltage: 1.100-1.372 V (0.85-1.50 V).
Power dissipation: 130 W TDP

Manufacturing process: 65 nm (P1264).

Number of transistors: (2x) 291 million.

Die size: (2x) 143 mm2.

Packaging: Socket T / LGA 775.

System management


Remote management: Intel Active Management (iAMT2).

CPUID32


Type Family Model Stepping Description
0x0 0x6 0xF 0x7 stepping B3
0x0 0x6 0xF 0xB stepping G0

Step level


Text:

Step levels:

  • B3: Extended HALT power (C1E): 50 W, thermal specification: 54.8/65 °C,
  • G0 (July 27, 2007): Extended HALT power (C1E): 37 W, thermal specification: 64.5 °C.

S-Spec / Stepping code


Model Code Stepping Description
Intel Core 2 Quad Extreme QX6700 CPU SL9UL B3 PCG: 05B
Intel Core 2 Quad Extreme QX6800 CPU SL9UK B3  
Intel Core 2 Quad Extreme QX6800 CPU SLACP G0 PCG: 05B
Intel Core 2 Quad Extreme QX6850 CPU SLAFN G0 PCG: 05B

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