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Intel Core 2 Duo E6xxx series processor (Allendale)


Model name: Core 2 Duo E6xxx series.
Code name: Allendale.
Supplier: Intel.
Component class: CPU.


Generation: Core 2.


Dual-core technology.

64 bit technology: EM64T.

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


L1 cache: (2x) 32 kbyte instruction cache, 32 kbyte data cache (Harvard architecture).
Shared L2 cache: 2 Mbyte.


266 MHz QDR bus.

Memory protection: XD bit.

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

Virtualization Technology (VT, Vanderpool).


Dual-core technology.


Power management

Power management:

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

Clock speed

Clock speed Model Multiplier Introduction Order part numbers
266/1866 MHz Intel Core 2 Duo E6300 CPU 7 January 2007 OEM: HH80557PH0362M,
PIB: BX80557E6300
266/2133 MHz Intel Core 2 Duo E6400 CPU 8 January 2007 OEM: HH80557PH0462M,
PIB: BX80557E6400


Voltage: 1.225-1.325 V.
Power dissipation: 65 W TDP.

Temperature: 5-61.4 °C.

Manufacturing process: 65 nm (P1264).

Number of transistors: 167 million.

Die size: 111 mm2.

Packaging: Socket T / LGA 775.

System management

Remote management: Intel Active Management (iAMT2).


Type Family Model Stepping Description
0x0 0x6 0xF 0x2 stepping L2

Step level


Step levels:

  • L2: Extended HALT power specification reduced from 22 W to 12 W.

S-Spec / Stepping code

Model Code Stepping
Intel Core 2 Duo E6400 CPU QUHB L2 QS
Intel Core 2 Duo E6400 CPU SL9T9 L2
Intel Core 2 Duo E6300 CPU QUHG L2 QS
Intel Core 2 Duo E6300 CPU SL9TA L2

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