User Manual

Specification Update 7
Identification Information
Component Identification using Programming Interface
The processor stepping can be identified by the following register contents.
Component Marking
The processor stepping can be identified by the following component markings.
Table 1. Processor Signature / Version
Reserved
Extended
family
1
Extended
model
2
Reserved
Processor
type
Family
code
3
Model
number
4
Stepping ID
5
31:28 27:20 19:16 15:14 13:12 11:8 7:4 3:0
00000000b 0011b 00b 0110b 1111b 0010
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 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 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.
4. 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.
5. The Stepping ID in Bits [3:0] indicates the revision number of that model.
Figure 1. Processor Top-side Markings (example)
GRP 1 LINE 1
GRP 1 LINE 2
GRP 1 LINE 3
GRP 1 LINE 4
GRP 1 LINE 5
LOT NO S /N
– 0
Legend: M ark Text (Production M ark):
GRP1LINE1: i{M}{C}YY
GRP1LINE2: SUB- BRAND PROC #
GRP1LINE3: SSPEC SPEED
GRP1LINE4: XXXXX
G R P1 LIN E5: { FPO} {e4}
Table 2. Processor Family identification
S-spec
number
Processor
Number
Stepping CPUID
Max Turbo
Frequency
(GHz)
Memory
Frequency
(MHz)
TDP
(W)
# Cores
Cache size
(MB)
R20Q i7-5960X R-2 000306F2h 3.5 2133 140 8 20
R20R i7-5930K R-2 000306F2h 3.7 2133 140 6 15
R20S i7-5820K R-2 000306F2h 3.6 2133 140 6 15