Gigabyte GA-8IG1000 Pro-G User Manual page 58

CPU Host Clock Control
Note: If system hangs up before enter CMOS setup utility, wait for 20 sec. for times out reboot.
When time out occur, system will reset and run at CPU default Host clock at next boot.
Disabled Disable CPU Host Clock Control.(Default value)
Enabled Enable CPU Host Clock Control.
CPU Host Frequency
100MHz ~ 355MHz
If you use FSB400 Pentium 4 processor, please set "CPU Host Frequency" to 100MHz. If you use
FSB533 Pentium 4 processor, please set "CPU Host Frequency" to 133MHz. If you use FSB800
Pentium 4 processor, please set "CPU Clock" to 200MHz.
Incorrect using it may cause your system broken. For power End-User use only!
AGP/PCI/SRC Fixed
Serial ATA device is very sensitive to SRC clock. SRC over clock may make Serial ATA device
function can't work properly.
Adjust AGP/PCI/SRC clock asynchronous with CPU.
Memory Frequency For
for FSB(Front Side Bus) frequency=400MHz,
2.66 Memory Frequency = Host clock X 2.66.
Auto Set Memory frequency by DRAM SPD data. (Default value)
for FSB(Front Side Bus) frequency=533MHz,
2.0 Memory Frequency = Host clock X 2.0
2.5 Memory Frequency = Host clock X 2.5.
Auto Set Memory frequency by DRAM SPD data. (Default value)
for FSB(Front Side Bus) frequency=800MHz,
2.0 Memory Frequency = Host clock X 2.0.
1.6 Memory Frequency = Host clock X 1.5.
1.33 Memory Frequency = Host clock X 1.33.
Auto Set Memory frequency by DRAM SPD data. (Default value)
Memory Frequency(Mhz)
The values depend on CPU Host Frequency(Mhz).
GA-8IG1000 Series Motherboard
Set CPU Host Clock from 100MHz to 355MHz.
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