IBM 6x86 marking & reference


On CPU top
IBM
6x86L
PR166+

IBM266x86L-2VAP166GB
150MHz-2.8V CORE
IBM
6x86MX
PR166

IBM26x86MX-AVAPR166GA
2.0x 66MHz-2.9V CORE
IBM
6x86
PR120+

IBM26 6x86-2V2P120GC
2.0x 50MHz
 
IBM
6x86L
PR166+
IBM266x86L-DXXP166YZ
150MHz-2.8V CORE

IBM 6x86 Processor Part Mark
A - CPU type 6x86
6x86L
6x86MX
PR166 - Performance Rating PR120-366
D - Clock Multiplier A or 2 = 2x
B = 2.5x
C or 3 = 3x
D = 3.5x
XX - Core Voltage V7 = 3.52V (single voltage CPU)
V2 = 3.3V (single voltage CPU)
VC = 3.1V
VB = 3.0V
VA = 2.9V (first spec for VA was 2.8V, but canceled by Cyrix)
Y - Package Type G = 296pin Ceramic PGA
H = 296pin ???
P = 296pin Plastic PGA
Z - Revision Level A = 2.4
B = 2.5
C = 2.7
D = 3.6
E = 3.7
F = ?
150MHz (or)
2.0x 66MHz
core frequency in MHz (or)
clock multiplier and FSB
2.8V CORE Core Voltage, check with XX