Intel Core™2 Quad Processor Q9400 (6M Cache, 2.66 GHz, 1333 MHz FSB) BX80569Q9400 User Manual

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Datasheet

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 Core™2 Extreme processor QX9000 series and Intel

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 Core™2 Quad processor Q9000, Q9000S, Q8000, and Q8000S 

series may contain design defects or errors known as errata which may cause the product to deviate from published specifications. 

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 64 requires a computer system with a processor, chipset, BIOS, operating system, device drivers, and applications enabled 

for Intel 64. Processor will not operate (including 32-bit operation) without an Intel 64-enabled BIOS. Performance will vary 

depending on your hardware and software configurations. See http://www.intel.com/info/em64t for more information including 

details on which processors support Intel 64, or consult with your system vendor for more information.
Enabling Execute Disable Bit functionality requires a PC with a processor with Execute Disable Bit capability and a supporting 

operating system. Check with your PC manufacturer on whether your system delivers Execute Disable Bit functionality.

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Intel

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 Virtualization Technology requires a computer system with an enabled Intel

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 processor, BIOS, virtual machine monitor 

(VMM) and, for some uses, certain platform software enabled for it. Functionality, performance or other benefits will vary 

depending on hardware and software configurations and may require a BIOS update. Software applications may not be compatible 

with all operating systems. Please check with your application vendor.
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a computer system with Intel® Virtualization Technology, an Intel TXT-enabled processor, chipset, BIOS, Authenticated Code 

Modules and an Intel TXT-compatible measured launched environment (MLE). The MLE could consist of a virtual machine monitor, 

an OS or an application. In addition, Intel TXT requires the system to contain a TPM v1.2, as defined by the Trusted Computing 

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‡ Not all specified units of this processor support Enhanced Intel SpeedStep

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 Technology. See the Processor Spec Finder at http:/

/processorfinder.intel.com or contact your Intel representative for more information.
Not all specified units of this processor support Thermal Monitor 2, Enhanced HALT State and Enhanced Intel SpeedStep® 

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