Specifications

Revision Determination 7
Revision Guide for AMD Athlon™ 64 and AMD Opteron™ Processors
25759 Rev. 3.79 July 2009
Revision Determination
Figure 1 shows the format of the value returned in EAX by CPUID Function 1.
Figure 1. Format of CPUID Value Returned by Function 1
Table 1 shows the identification number returned by the CPUID instruction for each revision of the
processor.
Table 1. CPUID Values for Revisions of the Processors
CPUID Function 1 EAX Value
Revision
AMD Opteron™
Processor
Dual-Core
AMD Opteron™
Processor
AMD Athlon™ 64
Processor
AMD Athlon™ 64 X2
Dual Core Processor
AMD Athlon™ 64 FX
Processor
AMD Athlon™ 64 FX
Dual Core Processor
Mobile
AMD Athlon™ 64
Processor
AMD Sempron™
Processor
Mobile
AMD Sempron™
Processor
Mobile
AMD Athlon
TM
XP-M
Processor
AMD Turion™
Mobile Technology
SH-B0 00000F50h
(940)
N/A 00000F40h
(754)
N/A N/A N/A N/A N/A N/A N/A N/A
SH-B3 00000F51h
(940)
N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
SH-C0 00000F58h
(940)
N/A 00000F48h
(754)
N/A 00000F58h
(940)
N/A 00000F48h
(754)
N/A N/A 00000F48h
(754)
N/A
SH-CG 00000F5Ah
(940)
N/A 00000F4Ah
(754)
00000F7Ah
(939)
N/A 00000F5Ah
(940)
00000F7Ah
(939)
N/A 00000F4Ah
(754)
N/A N/A 00000F4Ah
(754)
N/A
DH-CG N/A N/A 00000FC0h
(754)
00000FE0h
(754)
00000FF0h
(939)
N/A N/A N/A 00000FC0h
(754)
00000FE0h
(754)
00000FC0h
(754)
00000FE0h
(754)
00000FF0h
(939)
00000FC0h
(754)
00000FE0h
(754)
00000FC0h
(754)
00000FE0h
(754)
N/A
CH-CG N/A N/A 00000F82h
(754)
00000FB2h
(939)
N/A N/A N/A 00000F82h
(754)
N/A 00000F82h
(754)
00000F82h
(754)
N/A