14
Datasheet
Introduction
Platform Requirement Bit — Bit 18 of the processor’s IA32_FLEX_BRVID_SEL register is
the Platform Requirement Bit (PRB) that indicates that the processor has specific platform
requirements.
Processor Core — The processor’s execution engine.
Storage Conditions — Refers to a non-operational state. The processor may be installed in a
platform, in a tray, or loose. Processors may be sealed in packaging or exposed to free air.
Under these conditions, processor pins should not be connected to any supply voltages, have
any I/Os biased or receive any clocks.
Symmetric Agent — A symmetric agent is a processor which shares the same I/O subsystem
and memory array, and runs the same operating system as another processor in a system.
Systems using symmetric agents are known as Symmetric Multiprocessor (SMP) systems. 64-
bit Intel Xeon processors with 2 MB L2 cache should only be used in SMP systems which
have two or fewer agents.
Thermal Design Power — Processor/chipset thermal solution should be designed to this
target. It is the highest expected sustainable power while running known power-intensive real
applications. TDP is not the maximum power that the processor/chipset can dissipate.
Voltage Regulator Module (VRM)— DC-DC converter built onto a module that interfaces
with an appropriate card edge socket that supplies the correct voltage and current to the
processor.
VCC — The processor core power supply.
VSS — The processor ground.
VTT — The system bus termination voltage.
1.2
References
Material and concepts available in the following documents may be beneficial when reading this
document:
Document
Intel Order Number
64-bit Intel Xeon
Processor with 800 MHz System Bus (1 MB and 2 MB L2
Cache Versions) Specification Update
302402
64-bit Intel Xeon Processor with 2 MB L2 Cache Boundary Scan Descriptive
Language (BSDL) Model (V2.0) and Cell Descriptor File (V2.0)
http://developer.intel.com
64-bit Intel Xeon Processor with 2 MB L2 Cache Cooling Solution Mechanical
Models
http://developer.intel.com
64-bit Intel Xeon Processor with 2 MB L2 Cache Cooling Solution Thermal
Models
http://developer.intel.com
64-bit Intel Xeon Processor with 2 MB L2 Cache Mechanical Models
http://developer.intel.com
64-bit Intel Xeon Processor with 2 MB L2 Cache Thermal Models
http://developer.intel.com
64-bit Intel Xeon Processor with 2 MB L2 Cache Thermal/Mechanical Design
Guidelines
298348
AP-485, Intel Processor Identification and CPUID Instruction
241618
ATX12V Power Supply Design Guidelines
http://formfactors.org
Entry-Level Electronics-Bay Specifications: A Server System Infrastructure (SSI)
Specification for Entry Pedestal Servers and Workstations
http://www.ssiforum.org