intel Pentium Pro marking & reference


On CPU top
KB80521EX200 SY032 256K

intel®
PENTIUM® PRO

L6521179-0436
INTEL ®© '94 '95
B-, C, and sA stepping
KB80521EX200 >SL22V 256K
ICOMP® 2 #=220

intel®
PENTIUM® PRO

L7312012-0224
INTEL ®© '94 '96
sB1 stepping

intel Pentium Pro Processor Part Mark
intel PENTIUM PRO intel pentium Pro processor
KB - Package type BP - Boxed Pentium Pro
KB - Pentium Pro dual cavity
GJ - Pentium Pro dual cavity w/ 1MB L2
80521 - CPU type 80521 - Pentium Pro
EX - ? EX - ???
166 - core frequency core speed in MHz
SZZZZ - S-spec S-spec
QZZZZ - S-spec S-spec (engineering samples)
256K - internal L2 cache 256K - 256KB
512K - 512KB
1M - 1024KB
ICOMP INDEX= intel iCOMP® rating
L6521179 - FFFFFFFF F manufacturing plant code
0 - San Jose, Costa Rica (A6/T6)
1 - Cavite, Philippines
3 - Costa Rica
6 - Chandler, Arizona (A4)
8 - Leixlip, Ireland
9 - Penang, Malaysia (A1)
A - ???
C - ???
E - Philippines
I - ???
L - Malaysia
Q - Malaysia
R - Manila, Philippines
Y - Leixlip, Ireland
F Year of manufacture (6 - 1996, ...)
FF Week of manufacture
FFFF FPO# (test lot traceability number)
0436 - DDDD serialization code