Gigabyte GA-8I915P-MF user manual MB Intelligent TweakerM.I.T, CPU Smart FAN Mode, CPU Clock Ratio

CPU Smart FAN Mode

This option is available only when CPU Smart FAN Control is enabled.

Auto	BIOS autodetects the type of CPU fan you installed and sets the optimal CPU Smart
	FAN control mode for it. (Default value)
Voltage	Set to Voltage when you use a CPU fan with a 3-pin fan power cable.
PWM	Set to PWM when you use a CPU fan with a 4-pin fan power cable.

In fact, the Voltage option can be used for CPU fans with 3-pin or 4-pin power cables. However, some 4-pin CPU fan power cables are not designed following Intel 4-wire fans PWM control specifications. With such CPU fans, selecting PWM will not effectively reduce the fan speed.

2-7	MB Intelligent Tweaker(M.I.T.)
		CMOS Setup Utility-Copyright (C) 1984-2004 Award Software
			MB Intelligent Tweaker(M.I.T.)
	CPU Clock Ratio		[15X]			Item Help
	Memory Frequency For		[Auto]		Menu Level`
	Memory Frequency (Mhz)		400
KLJI: Move		Enter: Select	+/-/PU/PD: Value	F10: Save	ESC: Exit	F1: General Help
	F5: Previous Values		F6: Fail-Save Default		F7: Optimized Defaults

Incorrect using these features may cause your system broken. For power end-user use only.

CPU Clock Ratio

This setup option will automatically assign by CPU detection.

The option will display "Locked" and read only if the CPU ratio is not changeable.

Memory Frequency For

Wrong frequency may make system can't boot, clear CMOS to overcome wrong frequency issue. for FSB(Front Side Bus) frequency=800MHz,

2.0	Memory Frequency = Host clock X 2.0.
2.66	Memory Frequency = Host clock X 2.66.
Auto	Set Memory frequency by DRAM SPD data. (Default value)

Memory Frequency (Mhz)

The values depend on "Memory Frequency For" item.

- 43 - BIOS Setup

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