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28
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
Core Frequency = CPU
Clock * CPU Ratio
PCI Clock = CPU FSB Clock / Clock Ratio
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 1.6G
1600MHz
133MHz
533MHz
12x
Pentium 4 1.7G
1700MHz
133MHz
533MHz
13x
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 2.26G
2260MHz
133MHz
533MHz
17x
Pentium 4 2.4G
2400MHz
100MHz
400MHz
24x
Pentium 4 2.4G
2400MHz
133MHz
533MHz
18x
Pentium 4 2.53G
2530MHz
133MHz
533MHz
19x
Pentium 4 2.66G
2660MHz
133MHz
533MHz
20x
Pentium 4 2.80G
2800MHz
133MHz
533MHz
21x
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.