Cyrix CPUs
The diagram below shows how to interpret Cyrix CPU
markings to determine CPU type.
6x86 – P166+ GP
1 3 3 M H z
Internal Clock Speed (Core Frequency)
100 , 110 , 12 0, 133 , 15 0
CPU Model
6 x 8 6
6x8 6L
P–R atin g: 9 0+, 120+ , 133 +, 150+, 166 +, 2 00+
Center of
Core Voltage
3 . 3 V
3 . 5 2 V
2 . 5 V
2 . 7 V
VCC Specification
Full-spec = 3.15V ~ 3.7V
C-spec (16) = 3.15V ~ 3.45V
C-spec (028) = 3.4V ~ 3.7V
Cyrix 6x86 CPU Markings
3.52V (028)
Summary of Contents for PR5
Page 10: ...System Block Diagram ...