25
A
A
X
X
4
4
G
G
E
E
M
M
a
a
x
x
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
C
C
P
P
U
U
J
J
u
u
m
m
p
p
e
e
r
r
-
-
l
l
e
e
s
s
s
s
D
D
e
e
s
s
i
i
g
g
n
n
CPU VID signal and
clock generator provide CPU voltage auto-detection and allows the user to set the CPU frequency
, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less
designs are eliminated. There will be no worry of wrong CPU voltage detection.
Intel
®
Socket 478
Pentium 4 CPU
Power Regulator
CPU VID signal
CPU voltage
(Automatically generates CPU voltage)
Clock
Generator
CPU Freq. Ratio
BIOS
Controlled
Circuit
