Nvidia 650I manual System Clocks, CPU Spread Spectrum

Installing and Configuring the NVIDIA nForce 650i Ultra Motherboard

System Clocks

Select System Clocks from the Advanced Chipset Features menu and press Enter to display the System Clocks menu. From this menu, you are able to specify frequency settings, HT multipliers, and Spread Spectrum settings. Note that in Figure 9, all of the options are listed. On the actual BIOS screen, you will need to scroll down to see all the options.

Phoenix – AwardBIOS CMOS Setup Utility

System Clocks

Parameters	Settings Current Valc				e	Item Help
**Frequency Settings**	2933.3			2933.3
CPU Freq, MHz						Main Level
FSB Reference Clock, MHz	1066.7			1066.7			`
CPU Multiplier	[	11 X	]	11X		CPU frequency
PCIe x16_1, MHz	[Auto]			100
PCIe x16_3, MHz	[Auto]			100		multiplier.
PCIe x16_2, MHz	[Auto]			100		CPU core clock
						= FSB Ref Clock/4 *
SPP<->MCP Ref Clock, MHz	[Auto]			100
						CPU Multiplier
**HT Multiplier**	[5 x]
nForce SPP --> nForce MCP
nForce SPP <-- nForce MCP	[5 x]
**Spread Spectrum**	[UP Spread]
CPU Spread Spectrum
HT Spread Spectrum	Disabled
PCIe Spread Spectrum(SPP)	[Auto]
PCIe Spread Spectrum(MCP)	Disabled
SATA Spread Spectrum	Disabled			d
:Move Enter:Select +/-/PU/PD:Value				F10:Save		ESC:Exit F1:General Help
F5: Previous Values				F7:Defaults

Figure 9. System Clocks Menu

Note: Note that all data in white is for information only, data in yellow is changeable, data in blue is non-changeable, and data in a red box is highlighted for selection.

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