Interpreting Cpu Markings - ECS P5TX-Apro User Manual

P5TX–Apro User's Manual
4: Reference Information – 4.9
AMD K5 CPU Markings
P–Rating: 75, 90, 100, 120, 133, 150, 166
Internal Clock Speed
Operating Voltage
B = 3.45V ~ 3.60V
C = 3.30V ~ 3.465V
F = 3.135V ~ 3.465V
H = 2.76V ~ 3.0V / 3.135V ~ 3.465V
J = 2.57V ~ 2.84V / 3.135V ~ 3.465V
K = 2.38V ~ 2.63V / 3.135V ~ 3.465V

Interpreting CPU Markings

If you are installing a CPU and you do not have the informa-
tion needed to set the CPU jumper configuration you can usually
get it from the makings on the CPU. The following information
is a guide to reading the markings.
AMD – K5 – PR100 A B Q
100MHz
CPU Model
(Vcore/Vio)
Package Type
A=SPGA (296-pin)
Case Temperature
Q = 60°C
R = 70°C
W = 55°C
X = 65°C
Y = 75°C
Z = 85°C