Identification Information - Intel E5405 - Cpu Xeon Quad Core 2.00Ghz Fsb1333Mhz 12M Lga771 Tray Specification

Identification Information

Component Identification via Programming Interface
The Intel® Xeon® Processor 5400 Series stepping can be identified by the following
register contents:
Reserved
31:28
When EAX is initialized to a value of 1, the CPUID instruction returns the Extended
Family, Extended Model, Type, Family, Model and Stepping value in the EAX register.
Note that the EDX processor signature value after reset is equivalent to the processor
signature output value in the EAX register.
Notes:
1. The Extended Family, bits [27:20] are used in conjunction with the Family Code, specified in bits [11:8],
to indicate whether the processor belongs to the Intel386, Intel486, Pentium, Pentium Pro, Pentium 4,
or Intel® Core™ processor family.
2. The Extended Model, bits [19:16] in conjunction with the Model Number, specified in bits [7:4], are
used to identify the model of the processor within the processor's family.
3. The Processor Type, specified in bits [13:12] indicates whether the processor is an original OEM
processor, an OverDrive processor, or a dual processor (capable of being used in a dual processor
system).
4. The Family Code corresponds to bits [11:8] of the EDX register after RESET, bits [11:8] of the EAX
register after the CPUID instruction is executed with a 1 in the EAX register, and the generation field of
the Device ID register accessible through Boundary Scan.
5. The Model Number corresponds to bits [7:4] of the EDX register after RESET, bits [7:4] of the EAX
register after the CPUID instruction is executed with a 1 in the EAX register, and the model field of the
Device ID register accessible through Boundary Scan.
6. The Stepping ID in bits [3:0] indicates the revision number of that model. See Table 2 for the processor
stepping ID number in the CPUID information.
Cache and TLB descriptor parameters are provided in the EAX, EBX, ECX and EDX
registers after the CPUID instruction is executed with a 2 in the EAX register.
15
Extended Extended
Reserved
1 2
Family Model
27:20 19:16 15:14
0000000b 0001b
Processor Family
3 4
Type Code Number
13:12 11:8
00b 0110b
Intel® Xeon® Processor 5400 Series
Model Stepping
5 6
ID
7:4 3:0
0111b XXXXb
Specification Update