Intel QX9775 EU80574XL088N Data Sheet

Product codes
EU80574XL088N
Page of 90
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Datasheet 
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life sustaining applications. 
Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked “reserved” or “undefined.” Intel 
reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future 
changes to them.
The Intel
®
 Core™2 Extreme processor QX9775 may contain design defects or errors known as errata which may cause the product 
to deviate from published specifications. Current characterized errata are available on request.
Δ
Intel processor numbers are not a measure of performance. Processor numbers differentiate features within each processor 
family, not across different processor families. See http://www.intel.com/products/processor_number for details. Over time 
processor numbers will increment based on changes in clock, speed, cache, FSB, or other features, and increments are not 
intended to represent proportional or quantitative increases in any particular feature. Current roadmap processor number 
progression is not necessarily representative of future roadmaps. See www.intel.com/products/processor_number for details. 
Intel
®
 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.
±
Intel
®
 Virtualization Technology requires a computer system with an enabled Intel
®
 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.
‡ Not all specified units of this processor support Enhanced Intel SpeedStep
®
 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® 
Technology. See the Processor Spec Finder at http://processorfinder.intel.com or contact your Intel representative for more 
information. 
Warning: Altering clock frequency and/or voltage may (i) reduce system stability and useful life of the system and processor; (ii) 
cause the processor and other system components to fail; (iii) cause reductions in system performance; (iv) cause additional heat 
or other damage; and (v) affect system data integrity. Intel has not tested, and does not warranty, the operation of the processor 
beyond its specifications.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
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*Other names and brands may be claimed as the property of others.
Copyright © 2008, Intel Corporation.