Technical information

Cyrix CPUs
The diagram below shows how to interpret Cyrix CPU
markings to determine CPU type.
6x86 – P166+ GP
133MHz
Internal Clock Speed (Core Frequency)
100, 110, 120, 133, 150
CPU Model
6x86
6x86L
P–Rating: 90+, 120+, 133+, 150+, 166+, 200+
Center of
Core Voltage
3.3V
3.52V
2.5V
2.7V
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)