User manual GIGABYTE GA-A55M-S2H

[. . . ] 1001 12ME-A55MS2H-1001R Motherboard GA-A55M-S2H Motherboard GA-A55M-S2H Jun. 20, 2011 Copyright © 2011 GIGA-BYTE TECHNOLOGY CO. , LTD. The trademarks mentioned in this manual are legally registered to their respective owners. Disclaimer Information in this manual is protected by copyright laws and is the property of GIGABYTE. Changes to the specifications and features in this manual may be made by GIGABYTE without prior notice. [. . . ] This item is configurable only if the VGA Core Clock control option is set to Manual. This item is present only when you install a CPU that supports this feature. - 25 BIOS Setup (Note) CPU Clock Ratio CPUNorthBridgeFreq. Allows you to alter the clock ratio for the installed CPU. The adjustable range is dependent on the CPU being installed. Allows you to alter the frequency of the CPU North Bridge controller. Core Performance Boost(Note) CPB Ratio(Note) Allows you to determine whether to enable the Core Performance Boost (CPB) technology, a CPU performance-boost technology. (Default: Enabled) Allows you alter the ratio for the CPB. The adjustable range is dependent on the CPU being installed. (Default: Auto) Enables or disables the control of CPU host clock. Auto (default) allows the BIOS to automatically adjust the CPU host frequency. Manual allows the CPUFrequency(MHz) item below to be configurable. Note: If your system fails to boot after overclocking, please wait for 20 seconds to allow for automated system reboot, or clear the CMOS values to reset the board to default values. Allows you to manually set the CPU host frequency. . This option is configurable only when CPU Host Clock Control is set to Manual. Important It is highly recommended that the CPU frequency be set in accordance with the CPU specifications. Enables or disables PCIe Spread Spectrum. (Default: Disabled) CPU Host Clock Control CPUFrequency(MHz) PCIe Spread Spectrum Set Memory Clock Memory Clock Determines whether to manually set the memory clock. Auto lets BIOS automatically set the memory clock as required. Manual allows the memory clock control item below to be configurable. (Default: Auto) This option is configurable only when Set Memory Clock is set to Manual. X9. 33 Sets Memory Clock to X9. 33. (Note) This item is present only when you install a CPU that supports this feature. - 26 - BIOS Setup DRAMConfiguration x x x x x x x x x x x x x CMOS Setup Utility-Copyright (C) 1984-2011 Award Software DRAMConfiguration [Auto] Auto Auto Auto Auto Auto Auto Auto Auto Auto Auto Auto Auto Auto [Enabled] SPD -9T 9T 9T 24T 5T 110ns -10T 5T 33T 4T -Auto -9T 9T 9T 24T 5T 110ns -6T 4T 20T 4T -Item Help Menu Level DDR3TimingItems 1T/2T Command Timing CAS# latency RAS to CAS R/W Delay Row Precharge Time Minimum RAS Active Time TwTr Command Delay Trfc0 for DIMM2 Trfc1 for DIMM1 Write Recovery Time Precharge Time Row Cycle Time RAS to RAS Delay Four Bank Activate Windows BankInterleaving Enter: Select : Move F5: Previous Values +/-/PU/PD: Value F6: Fail-Safe Defaults F10: Save ESC: Exit F1: General Help F7: Optimized Defaults DDR3 Timing Items 1T/2T Command Timing CAS# latency Manual allows all DDR3 Timing items below to be configurable. Options are: Auto (default), 90ns, 110ns, 160ns, 300ns, 350ns. [. . . ] The actual BIOS Setup menu options you will see shall depend on the motherboard you have and the BIOS version. C. ConfiguringRAIDsetinRAIDBIOS Enter the RAID BIOS setup utility to configure a RAID array. After the POST memory test begins and before the operating system boot begins, look for a message which says "Press <Ctrl-F> to enter RAID Option ROM Utility". Press <Ctrl> + <F> to enter the RAID BIOS setup utility. To create a new array, press <2> to enter the LDView/LDDefineMenu window. [. . . ]