Nvidia 780I SLI manual System Clocks, CPU Spread Spectrum

Configuring the BIOS

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 Val•		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	x	[Auto]	100
	x16_1, MHz				multiplier.
PCIe	16_3, MHz	[Auto]	100		CPU core clock
PCIe x16_2, MHz		[Auto]	100
					= FSB Ref Clock/4 *
SPP<->MCP Ref Clock, MHz		[Auto]	100
					CPU Multiplier
**HT Multiplier**
nForce SPP --> nForce MCP [5 x]
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	‚
#$"!: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.

NVIDIA Corporation

October 17, 2007 DU-03597-001_v01

41