MSI ATX Mainboard MS-6775 (v1.x) manual SDRAMFrequency, Sdram CAS# Latency, Row Precharge Time

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BIOS Setup

Frequency, SDRAM CAS# Latency, Row Precharge Time, RAS Pulse Width, RAS to CAS Delay and SDRAM Bank Interleave automatically to be determined by BIOS based on the configurations on the SPD. Select- ing User allows users to configure these fields manually.

SDRAMFrequency

Use this item to configure the clock frequency of the installed SDRAM. Settings options: 200MHz, 266MHz, 333MHz, 400MHz, Auto.

SDRAM CAS# Latency

This controls the timing delay (in clock cycles) before SDRAM starts a read command after receiving it. Settings: Auto, 1.5, 2, 2.5, 3.0 (clocks). 2 (clocks) increases the system performance the most while 3 (clocks) provides the most stable performance.

Row Precharge Time

This item controls the number of cycles for Row Address Strobe (RAS) to be allowed to precharge. If insufficient time is allowed for the RAS to accumulate its charge before DRAM refresh, refreshing may be incomplete and DRAM may fail to retain data. This item applies only when synchronous DRAM is installed in the system. Available settings: Auto, 2, 3, 4, 5.

RAS Pulse Width

This setting allows you to select the number of clock cycles allotted for the RAS pulse width, according to DRAM specifications. The less the clock cycles, the faster the DRAM performance. Settings: Auto, 6, 7, 8, 9.

RAS to CAS Delay

When DRAM is refreshed, both rows and columns are addressed separately. This setup item allows you to determine the timing of the transition from RAS (row address strobe) to CAS (column address strobe). The less the clock cycles, the faster the DRAM performance. Setting options: Auto, 2, 3, 4, 5.

Write Recovery Cycle

You may set the write recovery cycle of DRAM. The less the clock cycles, the less time the DRAM recovery cycle writes. Setting options: Auto, 1T, 2T.

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Contents Version G52-M6775X1 KT6M-ILSFCC-B Radio Frequency Interference Statement Copyright Notice Revision HistoryRevision Revision History Date Safety Instructions Contents Bios Setup Appendix B VIA VT8237 Serial ATA RAID Introduction Appendix a Using 4- or 6-Channel Audio FunctionGetting Started Slots Mainboard SpecificationsChipset MainMemoryLAN 10/100 DimensionOn-Board Peripherals AudioMainboard Layout BiosLive BIOS/Live Driver MSI Special FeaturesColor Management Round Cable Optional Hardware Setup Spdifout Quick Components GuideMemory Speed/CPU Clock Support Matrix CPU Core Speed Derivation ProcedureThermal Issue for CPU Central Processing Unit CPUCPU Installation Procedures for Socket MSIRemindsYou Installing AMD Athlon CPU Socket 462 Cooler SetIntroduction to DDR Sdram MemoryDDR Dimm Module Combination Installing DDR ModulesPower Supply ATX 20-Pin Power Connector JWR1ATX 12V Power Connector JPW1 Back Panel Mouse ConnectorUSB 2.0 Connectors Keyboard ConnectorRJ-45 LAN Jack Optional Serial Port Connector ComaAudio Port Connectors Stereo Audio ConnectorsPort Parallel Port Connector LPT1 Connectors Floppy Disk Drive Connector FDD1Fan Power Connectors CFAN1/SFAN1 Chassis Intrusion Switch Connector JCASE1 Hard Disk Connectors IDE1 & IDE2MSI Reminds You Optional Serial ATA cable How to attach the Ieee 1394 Port Ieee 1394 Connectors J1394Front Panel Connectors JFP1 & JFP2 CD-In Connector JCD1Front Panel Audio Connector JAUD1 Aux Line-In Connector JAUX1Front USB Connectors JUSB1 & JUSB2 SPDIF-Out Connector SpdifoutClear Cmos Jumper JBAT1 JumpersFSB Clock Jumper SW1, SW2 CNR Slot SlotsAGP Accelerated Graphics Port Slot PCI Peripheral Component Interconnect SlotsPCI Interrupt Request Routing Bios Setup Selecting the First Boot Device Entering SetupMainMenu Default SettingsControl Keys Getting HelpMain Menu Load Bios Setup Defaults Set Supervisor PasswordSet User Password Load High Performance DefaultsStandard Cmos Features FloppyDriveA/B Boot Sector Virus ProtectionFull Screen Logo Show Advanced Bios FeaturesQuick Boot Boot SequenceA.R.T. for Hard Disks 1st/2nd/3rd Boot DeviceTry Other Boot Devices BootUpNum-LockOption Description Password CheckBoot To OS/2 System Bios CacheableMPS Table Version APICFunctionCurrent Host Clock Advanced Chipset FeaturesConfigure Sdram Timing by Dram Timing ControlSdram CAS# Latency RAS to CAS DelayWrite Recovery Cycle SDRAMFrequencySdram Burst Length SDRAM1TCommandFastCommand Bank InterleaveAGP Master 1 W/S Write AGPModeAGP Fast Write AGP Aperture SizePower Management Features Call VGA Bios at S3 ResumingACPIStandbyState Power Button Function PowerManagement/APMCPU Critical Temperature CPUHALTCommandDetectionSet WakeUp Events After AC Power LossResume By Alarm AlarmDate/Hour/Minute/Second00 ~ ClearNVRAM PNP/PCI ConfigurationsPCI Latency Timer Plug and Play Aware O/SPrimaryGraphicsAdaptor PCI IDE BusMasterIntegrated Peripherals IR Pin Select Floopy Disk ControllerSerial Port Port2ModeOnboardLANP.M.E PortIRQPortDMA OnboardLANPC Health Status Chassis IntrusionCPU Fan Detection Frequency/Voltage Control SpreadSpectrumCPU FSB Clock About Supervisor Password & User Password Set Supervisor/User PasswordLoad High Performance/BIOS Setup Defaults Appendix a Using 4- or 6-Channel Audio Function Installing the Audio Driver Installation for Windows 98SE/ME/2000/XPClick Realtek AC97 Audio Drivers MSI Reminds You Select this option Using 4- or 6-Channel Audio Function Using the Back PanelConfiguration in the Software Utility Using 4- or 6-Channel Audio Function „ 2-Channel Mode for Stereo-Speaker Output Connecting the SpeakersLine Out Rear channels Line Out Front channels „ 4-Channel Mode for 4-Speaker Output„ 6-Channel Mode for 6-Speaker Output Testing Each Speaker Testing the Connected SpeakersMS-6775 ATX Mainboard Playing KaraOK Playing KaraOKAppendix B VIA VT8237 Serial ATA RAID Introduction Capacity Benefits IntroductionRAID 1 Mirroring RAID 0 StripingBios Configuration Create Disk Array MS-6775 ATX Mainboard MSIRemindsYou Delete Disk Array Create and Delete Spare Hard Drive View Serial Number of Hard Drive Duplicate Critical RAID 1 Array Power off and Check the Failed Drive Rebuild Broken RAID 1 ArrayDestroy the Mirroring Relationship Continue to boot Choose Replacement Drive and RebuildInstalling RAID Software & Drivers Existing Windows XP Driver InstallationConfirming Windows XP Driver Installation Installation of VIA Sata RAID Utility MS-6775 ATX Mainboard Using VIA RAID Tool MS-6775 ATX Mainboard VIA VT8237 Serial ATA RAID Introduction MS-6775 ATX Mainboard