Krell Industries MS 6760 Frequency/Voltage Control, CPU Clock Ratio, Auto Detect DIMM/PCI Clk

Page 53

Chapter 2

2.10 Frequency/Voltage Control

CPU Clock Ratio

This setting controls the multiplier that is used to determine the internal clock speed of the processor relative to the external or motherboard clock speed.

Auto Detect DIMM/PCI Clk

This option allows you to enable/disable the feature of auto detecting the clock frequency of the installed DIMM/PCI bus. The settings are: Enabled, Disabled.

Spread Spectrum

When the motherboard’s clock generator pulses, the extreme values (spikes) of the pulses creates EMI (Electromagnetic Interference). The Spread Spectrum function reduces the EMI generated by modulating the pulses so that the spikes of the pulses are reduced to flatter curves. If you do not have any EMI problem, leave the setting at Disabled for optimal system stability and performance. But if you are plagued by EMI, activate the Spread Spectrum for EMI reduction. Remember to disable Spread Spectrum if you are overclocking because even a slight jitter can introduce a temporary boost in clockspeed which may just cause your overclocked processor to lock up. Options: Disabled, Enabled.

2-26

Image 53 Contents
Mainboard MS 6760 Vers.1 FCC-B Radio Frequency Interference Statement Lithium Battery Statement Macrovision Statement Safety Instructions Revision Revision History Date Copyright NoticeContents Control Keys Getting Help System Specification Others On-Board Headers & ConnectorsIntroducing Mainboard Introducing MainboardMS6760 v1.X Mainboard Mainboard layoutChapter Introduction to DDR Sdram CPU/memoryPower Supply Specification Power SupplyIeee 1394 Port J1394-2 Front panelUSB Ports Ieee 1394 Port J1394-1Optical SPDIF-in Mic-in/Head-PhoneSerial Port Back panelVGA Port Mouse/Keyboard ConnectorsOptical SPDIF-out RJ45 LAN JackParallel Port Audio Port FDD Connector CN10 ConnectorsIDE Connectors CN22 & CN23 CPU Fan Connector CN15 CD-in Connector CN16TV-Tuner Card Connector CN13 USB Card Reader Connector CN6 Front Panel Power Connector CN4Modem Module Connector CN21 LCM Connector CN8Clear Cmos Jumper J2 JumperAGP Accelerated Graphics Port Slot SlotsPCI Slot Setting Bios Function Setting Bios FunctionControl Keys Entering SetupMain Menu Getting HelpSub-Menu General Help F1Advanced Bios Features Standard Cmos FeaturesAdvanced Chipset Features Main menuPNP/PCI Configurations Setting Bios Function Power Management SetupLoad Fail/Safe Defaults Load Optimized DefaultsIDE Primary/Secondary Master/Slave Standard cmos featuresTime Halt On VideoQuick Boot Advanced bios featuresBoot Sequence CPU L1 & L2 CacheBoot Up Num-Lock Status Setting Bios Function CPU L2 Cache ECC CheckingTypematic Rate Setting Typematic Delay MsecChapter Security Option Apic ModeHDD S.M.A.R.T Capability HT CPU FunctionCAS Latency Setting Advanced chipset featuresAdvanced Dram Control System PerformanceAGP Fast Write Chapter MA 1T/2T SelectAGP Aperture Size Internal PCI/IDE Integrated peripheralsSIS OnChip IDE Device Chapter IDE Primary/Secondary Master/Slave PIO IDE DMA Transfer AccessPrimary/Secondary Master/Slave UltraDMA SIS OnChip PCI DeviceUSB Keyboard Support Setting Bios Function USB 2.0 SupportsUSB Mouse Support SIS S/W ModemChapter Onboard Super IO Device Onboard Parallel Port ModeOnboard FDC Controller Onboard Serial PortECP Mode Use DMA Setting Bios Function EPP Mode SelectInit Display First System Share Memory SizeChapter Onboard LAN Device Onboard Lan Boot ROMSleep State Power management setupSuspend Mode Chapter Power ManagementPower Button Function Modem Use IRQPM Wake Up Events Setting Bios Function After AC Power LostIRQ 3-7, 9-15, NMI & IRQ 8 Break Suspend Wake Up On PME/Ring Chapter USB Wake Up from S3 Resume By Alarm PS2KB Wake Up from S3/S4/S5 PS2MS Wake Up from S3/S4/S5Resources Controlled By Pnp/pci configurationsClear Escd PCI/VGA Palette Snoop IRQ ResourcesPC health status Shutdown TemperatureCPU Clock Ratio Frequency/Voltage ControlAuto Detect DIMM/PCI Clk Spread SpectrumDram Frequency Setting Bios Function CPU Frequency