ASRock Z87 Pro4 Dram Tweaker, CAS# Latency tCL, RAS# to CAS# Delay tRCD, Row Precharge Time tRP

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English

DRAM Tweaker

Fine tune the DRAM settings by leaving marks in checkboxes. Click OK to confirm and apply your new settings.

CAS# Latency (tCL)

The time between sending a column address to the memory and the beginning of the data in response.

RAS# to CAS# Delay (tRCD)

The number of clock cycles required between the opening of a row of memory and accessing columns within it.

Row Precharge Time (tRP)

The number of clock cycles required between the issuing of the precharge command and opening the next row.

RAS# Active Time (tRAS)

The number of clock cycles required between a bank active command and issuing the precharge command.

Command Rate (CR)

The delay between when a memory chip is selected and when the first active command can be issued.

Write Recovery Time (tWR)

The amount of delay that must elapse after the completion of a valid write operation, before an active bank can be precharged.

Refresh Cycle Time (tRFC)

The number of clocks from a Refresh command until the first Activate command to the same rank.

RAS to RAS Delay (tRRD)

The number of clocks between two rows activated in different banks of the same rank.

Write to Read Delay (tWTR)

The number of clocks between the last valid write operation and the next read command to the same internal bank.

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Contents Page Disclaimer Copyright NoticeContents Uefi Setup Utility Security Screen Exit Screen Introduction Package ContentsPlatform SpecificationsLAN Bios Certifica Unique Features ASRock OMG Online Management Guard ASRock Crashless BiosASRock Easy RAID Installer ASRock XFast RAMASRock On/Off Play Technology ASRock Fast BootASRock Interactive Uefi ASRock Restart to UefiASRock Home Cloud ASRock FAN-Tastic TuningASRock Easy Driver Installer Intel No. Description I/O Panel Activity / Link LED Status Description Installation Installing the CPU English English Installing the CPU Fan and Heatsink Dual Channel Memory Configuration Installing Memory Modules DimmEnglish Expansion Slots PCI and PCI Express Slots PCIe Slot ConfigurationsCLRCMOS1 Jumpers SetupPwrbtn Power Switch Onboard Headers and ConnectorsPin PLED1 Front Panel Audio Header Pin HDAUDIO1 See p.10, No ATX Power Connector Pin ATXPWR1 See p.10, No TPM Header Pin TPMS1 See p.10, No Using the HDMI-In Port English Connection DiagramStep CrossFireXTM and Quad CrossFireXTM Operation Guide Installing Two CrossFireXTM-Ready Graphics CardsEnglish Driver Installation and Setup Utilities Menu Installing DriversRunning The Support CD Drivers MenuOperation Mode TuningInstalling A-Tuning Using A-TuningXFast RAM ToolsSystem Info OC TweakerTech Service System Requirements Intel Rapid Start TechnologyConfiguring Rapid Start Setup GuideDouble-click the Intel Rapid Start Technology Manager icon Using Rapid Start English Intel Smart Connect Technology Installing ASRock Smart Connect Utility Click Apply to enable Smart Connect Using Smart Connect English Creating a Mesh Configuring and Using MeshCentralIntel Remote Wake Technology Downloading and Installing Mesh Agent Click Install / Update Click on Power Actions Waking up a PC using mobile device Using Remote Wakeup Configuring and Using SplashtopSetup Guide Using Remote Control Accessing Data Playing Video Style Installing Start8Configuring Start8 Start8Control ConfigureAbout DesktopUefi Menu Bar IntroductionEND Navigation KeysUefi Guide Main ScreenActive Page on Entry BCLK/PCIE Frequency CPU Configuration CPU Ratio OC Tweaker Screen CPU Cache RatioSpread Spectrum Long Duration Power LimitShort Duration Power Limit GT Voltage ModeGT Voltage Offset Dram Timing Configuration Load XMP SettingDram Configuration GT Adaptive VoltageRAS to RAS Delay tRRD RAS# to CAS# Delay tRCDCommand Rate CR Write Recovery Time tWRTREFI Read to Precharge tRTPFour Activate Window tFAW CAS Write Latency tCWLTRDWRDR TWRWRDRTWRWRDD TRDWRFivr Switch Frequency Offset Command Tri StateMRC Fast Boot Fivr Configuration Fivr Switch Frequency SignatureCPU Analog IO Voltage Offset CPU Integrated VR FaultsCPU Integrated VR Efficiency Mode Voltage Configuration CPU Input VoltageAdvanced Screen CPU Configuration Intel Virtualization Technology Package C State SupportCPU Thermal Throttling No-Execute Memory ProtectionChipset Configuration Front Panel Restore on AC/Power LossRender Standby Onboard HD AudioSata Controllers Storage ConfigurationSata Mode Selection Sata Aggressive Link Power ManagementIndicators of reliability Intel Rapid Start Technology Intel Smart Connect Technology Infrared Port Super IO ConfigurationSerial Port Serial Port AddressAcpi Configuration USB Mouse Power On Ring-In Power OnRTC Alarm Power On USB Keyboard/Remote Power OnLegacy USB Support USB ConfigurationUSB Controller USB 3.0 ControllerSecurity Device Support Trusted ComputingTools Internet Flash Network ConfigurationInternet Setting Instant FlashDehumidifier Function Dehumidifier CPU Fan SettingSave User Default Load User DefaultOver Temperature Protection CPU Fan 1 & 2 SettingChassis Fan 1 Setting Chassis Fan 2 SettingSetup Prompt Timeout Boot ScreenFast Boot Boot From Onboard LANAddOn ROM Display Boot Failure GuardBoot Failure Guard Count Full Screen LogoLaunch Video OpROM Policy Launch PXE OpROM PolicyLaunch Storage OpROM Policy Security Screen Supervisor PasswordUser Password Secure BootExit Screen Contact Information
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