MSI Big Bang-XPower manual

Page 74

BIOS Setup

▶Spread Spectrum

When the mainboard’s clock generator pulses, the extreme values (spikes) of the pulses create 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.

Important

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, select the value of Spread Spectrum for EMI reduction.

The greater the Spread Spectrum value is, the greater the EMI is reduced, and the system will become less stable. For the most suitable Spread Spectrum value, please consult your local EMI regulation.

Remember to disable Spread Spectrum if you are overclocking because even a slight jitter can introduce a temporary boost in clock speed which may just cause your over- clocked processor to lock up.

3-24

Image 74
Contents XPower series MS-7666 v1.x MainboardRevision History Preface FCC-B Radio Frequency Interference Statement Weee Waste Electrical and Electronic Equipment Statement Español Türkçe Contents Appendix a Realtek Audio Page Getting Started Mainboard Specifications QPIChapter XPower Series for MS-7666 1.0 only ATX Mainboard Mainboard LayoutXPower Series MS-7666 1.X ATX Mainboard Packing Checklist Hardware Setup Quick Components Guide CPU Central Processing Unit Introduction to LGA 1366 CPUCPU & Cooler Installation Alignment KeyChapter Mainboard Hook Memory Memory Population RuleDIMM2 ChannelA Installing Memory Modules ATX 8-pin Power Connector JPWR2/ JPWR3 Power SupplyATX 24-pin Power Connector JPWR1 ATX 6-pin Power Connector JPWR4 Back Panel Standard RJ-45 LAN jack is for connection to Yellow Connectors Serial ATA Connector SATA1~8Fan Power Connectors CPUFAN,SYSFAN1~4 Front USB Connector JUSB1 / JUSB2 Chassis Intrusion Connector JCI1IEEE1394 Connector J13941 Front Panel Connectors JFP1, JFP2TPM Module connector JTPM1 GreenPower Genie Connector JSMB1 optionalButton Power ButtonReset Button OC Genie Button Base Clock Control ButtonsSwitch Over-Voltage SwitchVoltage Check Point V-Check Point Pcie x16 slots Population Rule SlotsPcie Peripheral Component Interconnect Express Slot PCIE2 PCIE3 PCIE4 PCIE5 PCIE6 PCIE7 Installed Empty ATI CrossFireXTM Multi -GPU Technology Select the Advanced View from the view drop menu Nvidia SLI Technology Check the box LED Status Indicators optional CPU Phase LED panel QPI Phase LEDsPower LED IOH Phase LEDsDDR Phase LEDs Reset LEDDebug LED Panel Page Bios Setup Entering Setup Press DEL to enter SetupGeneral Help F1 Control KeysGetting Help Main Menu Chapter Standard Cmos Features System doesn’t stop for any detected error Advanced Bios Features Hpet Integrated Peripherals Chapter Power Management Setup Hhmmss Monitor Green Power Bios Setting Password Cell Menu Bios Setup Chapter Page MEMORY-Z Page Chapter Page MS-7666 Boot FlashChapter Page Overclocking Profile Load Fail -Safe/ Optimized Defaults Realtek Audio Hardware Setup Spdif -Out Connector JSPD1 Front Panel Audio Connector JAUD1CD-In Connector CDIN1 Page MIC Installing the Realtek HD Audio Driver Installation for WindowsSoftware Configuration Software panel overviewAuto popup dialog Intel RAID Introduction Bios Configuration Using the Intel Matrix Stroage Manager Option ROMPage Appendix B Intel RAID Appendix B Page Appendix B Installing Driver Appendix B Degraded RAID Array Appendix B Page Marvell RAID RAID Configuration Press Ctrl+M to enter Bios Setup or Space to continueAppendix C RAID MRAID1 Using Delete permanently erases all data on the virtual disk Status Installing the RAID Driver for bootable RAID Array Appendix C