Asus P8H77I, P8H77-I manual CPU Voltage Auto, IGPU Offset Voltage Auto, Dram Voltage Auto

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The following three items appear only when you set both the Enhanced Intel SpeedStep Technology and Turbo Mode items to [Enabled].

Long duration power limit [Auto]

The default setting of this item will be TDP (65W or 95W for different CPUs). For Sandy Bridge, Turbo Ratio can be kept a time duration exceed TDP for maximum performance. Any under 255 can be programmed. Use the <+> and <-> keys to adjust the value.

Long duration maintained [Auto]

This value can vary from 1 to 32, which indicates the time window for Turbo Ratio over TDP should be maintained. Use the <+> and <-> keys to adjust the value.

Short duration power limit [Auto]

This is the second power limit to provide rapid protection when package power exceeds Power Limit 1. Default setting is 1.25 times Power Limit 1. For Intel recommend, platform must be capable of supporting over Power Limit 2 for up to 10 msec. ASUS board can support over Power Limit 2 for a long duration. Use the <+> and <-> keys to adjust the value.

Primary Plane Current Limit [Auto]

Maximum instantaneous current allowed at any given time for CPU cores. The value is represented in 1/8 A (0.125A) increment. Use the <+> and <-> keys to adjust the value.

Secondary Plane Current Limit [Auto]

Maximum instantaneous current allowed at any given time for internal graphics cores. The value is represented in 1/8 A (0.125A) increment. Use the <+> and <-> keys to adjust the value.

Some of the following items are adjusted by typing the desired values using the numeric keypad and press <Enter>. You can also use the <+> and <-> keys to adjust the value. To restore the default setting, type [auto] using the keyboard and press <Enter>.

2.4.6CPU Voltage [Auto]

Allows you to set the CPU voltage. Configuration options: [Auto] [+0.05V] [+0.10V] [+0.15V].

2.4.7iGPU Offset Voltage [Auto]

Allows you to set the iGPU Offset voltage. The value ranges from 0.005V to 0.635V with a 0.005V interval.

2.4.8DRAM Voltage [Auto]

Allows you to set the DRAM voltage. The values range from 1.185V to 2.135V with a 0.005V interval.

According to Intel CPU spec, DIMMs with voltage requirement over 1.65V may damage the CPU permanently. We recommend you install the DIMMs with the voltage requirement below 1.65V.

ASUS P8H77-I

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Contents Motherboard Offer to Provide Source Code of Certain Software Copyright 2013 ASUSTeK Computer Inc. All Rights ReservedContents CPU Configuration PCH Configuration Asus Bios UpdaterSystem Language English Network StackAnti Surge Support Enabled Safety information Electrical safetyOperation safety Where to find more information About this guideHow this guide is organized Conventions used in this guide TypographyBold text PCI Express 3.0/2.0 x16 slot P8H77-I specifications summaryBios Package contents Special featuresWelcome Native Sata 6.0 Gb/s support Intel H77 Express ChipsetComplete USB 3.0 Integration PCIe 3.0 ReadyInnovative Asus features GPU Boost USB 3.0 BoostAsus Q-Fan Asus Fan XpertLucidLogix Virtu MVP R. CPU Parameter RecallErP ready Standby Power LED Standby Power Powered OffBefore you proceed Placement direction Motherboard overviewScrew holes Motherboard layout Layout contentsTo install a CPU Locate the CPU socket on the motherboard Installing the CPUCentral Processing Unit CPU Load lever Retention tabCPU notches Gold triangle mark Alignment keys Load plateRetention tab Insert the load lever underInstalling the CPU heatsink and fan Uninstalling the CPU heatsink and fan P8H77-I CPU fan connectorSystem memory OverviewP8H77-I 240-pin DDR3 Dimm sockets DDR3-2250 MHz capability Memory configurationsDDR3-2133 MHz capability DDR3-2200 MHz capabilityDDR3-2000 MHz capability DDR3-1866 MHz capabilityDDR3-1600 MHz capability DDR3-1333 MHz capability Vendors Size Chip Brand Chip no Timing Voltage Dimm socket SS Single-sided / DS Double-sided Dimm support DDR3-1066 MHz capabilityInstalling a Dimm Removing a DimmRemove the Dimm from the socket Configuring an expansion card Installing an expansion cardExpansion slots PCI Express x16 slotsClear RTC RAM 3-pin Clrtc JumpersRear panel connectors ConnectorsAudio 2, 4, 6, or 8-channel configuration LAN port LED indicationsAsus P8H77-I P8H77-I Digital audio connector Internal connectorsFront panel audio connector 10-1 pin Aafp P8H77-I Front panel audio connectorP8H77-I ATX power connectors ATX power connectors 24-pin EATXPWR, 4-pin ATX12VCPU, and chassis fan connectors 4-pin CPUFAN, 4-pin Chafan P8H77-I System panel connector P8H77-ISpeaker Out ConnectorSee .5.3 Sata Configuration for details P8H77-I Sata 3.0Gb/s connectorsUSB 3.0 connector 20-1 pin USB334 P8H77-I USB3.0 Front panel connectorUSB connectors 10-1 pin USB78 P8H77-I USB2.0 connectorClick an item to install Installing an operating systemSoftware support Support DVD informationAsus Update utility Managing and updating your BiosInstalling Asus Update Updating the BiosTo update the Bios using EZ Flash Select Update Bios from file, then click NextAsus EZ Flash Asus CrashFree Bios 3 utility Recovering the BiosTo recover the Bios Asus Bios Updater Before updating BiosBooting the system in DOS environment Backing up the current Bios To backup the current Bios file using the Bios UpdaterFilename Extension To update the Bios file using Bios Updater Updating the Bios fileBios setup program Entering Bios Setup at startupEntering Bios Setup after Post EZ Mode Bios menu screenMenu items Advanced ModeBack button Submenu itemsPop-up window Configuration fieldsScroll bar Navigation keysSystem Language English Main menuSystem Date Day xx/xx/xxxx System TimeUser Password Administrator PasswordAi Tweaker menu Memory Frequency Auto CPU Power ManagementIGPU Max. Frequency GPU Boost OKCPU Voltage Auto IGPU Offset Voltage AutoDram Voltage Auto Advanced menu Vccsa Voltage AutoPCH Voltage Auto CPU Configuration Sata Configuration PCH ConfigurationSystem Agent Configuration Onboard Devices Configuration USB ConfigurationNetwork Stack 7 APM12V Voltage Monitor menuCPU Q-Fan Control Enabled CPU Temperature / MB Temperature xxxºC/xxxºFCPU / Chassis Fan Speed xxxx RPM or Ignore / N/A CPU Fan Speed Low Limit 200 RPMAnti Surge Support Enabled Chassis Q-Fan Control EnabledOn the chassis temperature CPU Voltage, 3.3V Voltage, 5V Voltage, 12V VoltageBootup NumLock State On Boot menuFull Screen Logo Enabled Wait for ‘F1’ If Error EnabledSetup Mode EZ Mode Option ROM Messages Force BiosUEFI/Legacy Boot Enabled both Uefi and Legacy Boot Option PrioritiesAsus EZ Flash 2 Utility Tools menuAsus O.C. Profile Asus SPD InformationExit menu IC Canadian Compliance Statement Federal Communications Commission StatementCanadian Department of Communications Statement Asus Recycling/Takeback ServicesTelephone AddressOnline support Support faxEC Declaration of Conformity Declaration of Conformity