Intel Itanium 2 Processor - Manual (Page 73)

Datasheet 73
Mechanical Specifications
NOTE: 2D Matrix Mark only present on Itanium 2 processor (6 MB), Itanium 2 processor (4 MB) and Itanium 2
processor (1.3 GHz, 3 MB).
Figure 4-5. Processor Bottom-Side Marking Placement on Interposer
001267b
Laser Mark including
2D Matrix Mark
AH1 A1
AH25 A25
Pin 1
Indicator