Intel Xeon X3470 BX80605X3470 User Manual

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Intel® Xeon® Processor 3400 Series Datasheet, Volume 1

The processor supports Intel

®

 Hyper-Threading Technology (Intel

®

 HT Technology), 

which allows an execution core to function as two logical processors. While some 
execution resources such as caches, execution units, and buses are shared, each 
logical processor has its own architectural state with its own set of general-purpose 
registers and control registers. This feature must be enabled using the BIOS and 
requires operating system support. 

Intel recommends enabling Hyper-Threading Technology with Microsoft Windows 
Vista*, Microsoft Windows* XP Professional/Windows* XP Home, and disabling Hyper-
Threading Technology using the BIOS for all previous versions of Windows operating 
systems. For more information on Hyper-Threading Technology, see:
http://www.intel.com/products/ht/hyperthreading_more.htm. 

Intel

®

 Turbo Boost Technology is a feature that allows the processor core to 

opportunistically and automatically run faster than its rated operating frequency if it is 
operating below power, temperature, and current limits. Maximum frequency is 
dependant on the SKU and number of active cores. No special hardware support is 
necessary for Intel Turbo Boost Technology. BIOS and the operating system can enable 
or disable Intel Turbo Boost Technology. 

Intel Turbo Boost Technology may not be available on all SKUs. Refer to the processor 

specification update for details.