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Core Frequency = CPU
FSB
PCI Clock = CPU FSB Clock / Clock Ratio
AGP
Clock = PCI Clock x 2
Northwood
CPU Core
CPU
Frequency
Pentium 4
1600MHz
1.6G
Pentium 4
1600MHz
1.6G
Pentium 4
1700MHz
1.7G
Pentium 4
1800MHz
1.8G
Pentium 4
2000MHz
2.0G
Pentium 4
2200MHz
2.2G
Pentium 4
2400MHz
2.4G
Pentium 4
2400MHz
2.4G
Warning: Intel
400MHz (100MHz*4) / 533MHz (133MHz*4) system bus
and 66MHz AGP clock; higher clock setting may cause
serious system damage.
Clock * CPU Ratio
FSB
System
Ratio
Clock
Bus
100MHz
400MHz
16x
133MHz
533MHz
12x
133MHz
533MHz
13x
100MHz
400MHz
18x
100MHz
400MHz
20x
100MHz
400MHz
22x
100MHz
400MHz
24x
133MHz
533MHz
18x
®
845E chipset supports maximum
Willamette
CPU Core
CPU
Frequency
Pentium 4
1500MHz
1.5G
Pentium 4
1600MHz
1.6G
Pentium 4
1700MHz
1.7G
Pentium 4
1800MHz
1.8G
Pentium 4
1900MHz
1.9G
Pentium 4
2000MHz
2.0G
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.
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FSB
System
Ratio
Clock
Bus
100MHz
400MHz
15x
100MHz
400MHz
16x
100MHz
400MHz
17x
100MHz
400MHz
18x
100MHz
400MHz
19x
100MHz
400MHz
20x
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