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28
A
A
X
X
4
4
L
L
R
R
/
/
A
A
X
X
4
4
L
L
R
R
-
-
N
N
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
Core Frequency = CPU
FSB
Clock * CPU Ratio
PCI Clock = CPU FSB Clock / Clock Ratio
AGP
Clock = PCI Clock x 2
Northwood CPU
CPU Core
Frequency
FSB Clock
System Bus
Ratio
Pentium 4
1.6G
1600MHz
100MHz
400MHz
16x
Pentium 4
1.8G
1800MHz
100MHz
400MHz
18x
Pentium 4
2.0G
2000MHz
100MHz
400MHz
20x
Pentium 4
2.2G
2200MHz
100MHz
400MHz
22x
Pentium 4
2.4G
2400MHz
100MHz
400MHz
24x
Warning:
Intel
®
845GL
chipset supports maximum
400MHz (100MHz*4)
system bus and 66MHz
AGP clock; higher clock
setting may cause serious
system damage.
Note:
Since the latest processor, Northwood, would detect
the clock ratio automatically, you may not be able to adjust
the clock ratio in BIOS manually.