Identification Information
24 Specification Update
Identification Information
The Pentium 4 processor may be identified by the following component markings:
Family
1
Model
2
Brand ID
3
1111 0000 00001000
1111 0001 00001000 or 00001001
1111 0010 00001001
1111 0011 —
NOTES:
1. The Family 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 registers accessible through Boundary Scan.
2. The Model 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 registers accessible through Boundary Scan.
3. The Brand ID corresponds to bits [7:0] of the EBX register after the CPUID instruction is
executed with a 1 in the EAX register.
Table 1. Intel
®
Pentium
®
4 Processor Identification Information
S-Spec
Core
Stepping
L2 Cache
Size (bytes)
CPUID Speed Core/Bus Package and Revision Notes
SL4QD B2 256K 0F07h 1.30GHz/400MHz 31.0 mm OOI rev 1.0 1, 3
SL4SF B2 256K 0F07h 1.30GHz/400MHz 31.0 mm OOI rev 1.0 3
SL4SG B2 256K 0F07h 1.40GHz/400MHz 31.0 mm OOI rev 1.0 2, 3
SL4SC B2 256K 0F07h 1.40GHz/400MHz 31.0 mm OOI rev 1.0 1, 3
SL4SH B2 256K 0F07h 1.50GHz/400MHz 31.0 mm OOI rev 1.0 2, 3
SL4TY B2 256K 0F07h 1.50GHz/400MHz 31.0 mm OOI rev 1.0 1, 3
SL5FW C1 256K 0F0Ah 1.30GHz/400MHz 31.0 mm OOI rev 1.0 3
SL4WS C1 256K 0F0Ah 1.40GHz/400MHz 31.0 mm OOI rev 1.0 3
SL4WT C1 256K 0F0Ah 1.50GHz/400MHz 31.0 mm OOI rev 1.0 3
SL4WU C1 256K 0F0Ah 1.60GHz/400MHz 31.0 mm OOI rev 1.0 3
SL57W C1 256K 0F0Ah 1.7GHz/400MHz 31.0 mm OOI rev 1.0 2, 3
SL4WV C1 256K 0F0Ah 1.80GHz/400MHz 31.0 mm OOI rev 1.0 3
SL5GC C1 256K 0F0Ah 1.30GHz/400MHz 31.0 mm OOI rev 1.0 1, 3
SL4X2 C1 256K 0F0Ah 1.40GHz/400MHz 31.0 mm OOI rev 1.0 1, 3
SL4X3 C1 256K 0F0Ah 1.50GHz/400MHz 31.0 mm OOI rev 1.0 1, 3
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