Foxconn P35A - Manual (Page 32)

3
25
Overclock Options
Inside Intel chipset, there is a ratio number (we called it FOX Ratio here) which is defined as
the value of the memory clock divided by the CPU clock.
Normally, multiply CPU clock by 4, you can get the CPU Front Side BUS speed. While for
DDR2 memory, multiply memory clock by 2, you can get DDR2 memory speed.
In this section, we will explain how to overclock your memory or CPU.
The above table lists the Ratio numbers come with different combinations of CPUs and
memories.
A Normal, Non-overclocking System :
We set FOX Ratio to disabled, and DRAM Frequency to Auto.
In a CPU FSB 1333MHz system, if a DDR2 800MHz memory is installed, then FOX Ratio
number will be set to 1:1.2. Same CPU (FSB 1333MHz), if we install a DDR2 667MHz
memory, then FOX Ratio number will be set to 1:1.
CPU FSB Speed DDR2 Speed CPU Clock Memory Clock FOX Ratio Select
1333MHz 800MHz 333MHz 400MHz 1:1.2
1333MHz 667MHz 333MHz 333MHz 1:1
1066MHz 800MHz 266MHz 400MHz 1:1.5
1066MHz 667MHz 266MHz 333MHz 1:1.25
800MHz 800MHz 200MHz 400MHz 1:2
800MHz 667MHz 200MHz 333MHz 1:1.66
CMOS Setup Utility - Copyright (C) 1985-2005, American Megatrends, Inc.
Overclock Options
Overclock Options Help Item
FOX Ratio Select [Disabled] Select FSB:MEM Ratio
CPU FSB Type 800MHz
Memory Target Frequency 800MHz
CPU FSB Over Clock Choice [ 800]
PCIE Freq Over Clock(MHz) [100]
Spread Spectrum [Enabled]
Memory Remap Feature [Enabled]
PCI MMIO Allocation: 4GB to 3072MB
DRAM Frequency [Auto]
Configure DRAM Timing by SPD [Enabled]
Memory Hole [Disabled]
↑↓←→:Move Enter:Select +/-/:Value F10:Save ESC:Exit F1:General Help
F7:Previous Values F8:Fail-Safe Defaults F9:Optimized Defaults
[Disabled]