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GA-990X-Gaming SLI
User's Manual
Rev. 1002
12ME-990XGMS-1002R
For more product details, please visit GIGABYTE's website.
To reduce the impacts on global warming, the packaging materials of this product
are recyclable and reusable. GIGABYTE works with you to protect the environment.

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Summary of Contents for Gigabyte GA-990X-Gaming SLI

  • Page 1 GA-990X-Gaming SLI User's Manual Rev. 1002 12ME-990XGMS-1002R For more product details, please visit GIGABYTE's website. To reduce the impacts on global warming, the packaging materials of this product are recyclable and reusable. GIGABYTE works with you to protect the environment.
  • Page 2 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. No part of this manual may be reproduced, copied, translated, transmitted, or published in any form or by any means without GIGABYTE's prior written permission.
  • Page 3: Table Of Contents

    Table of Contents GA-990X-Gaming SLI Motherboard Layout ..............4 Chapter 1 Hardware Installation ..................5 Installation Precautions ..................5 ..................6 Installing the CPU .................... 9 Installing the Memory ..................9 Installing an Expansion Card ................. 10 Back Panel Connectors .................. 10 Internal Connectors ..................
  • Page 4: Ga-990X-Gaming Sli Motherboard Layout

    GA-990X-Gaming SLI Motherboard Layout Socket AM3+ ASMedia ® USB 3.1 Controller Intel ® GbE LAN (Note) PCIEX16 110F GA-990X-Gaming SLI ® PCIEX8 PCI1 ® Super I/O PCI2 COMA Box Contents GA-990X-Gaming SLI motherboard Four SATA cables Motherboard driver disk I/O Shield...
  • Page 5: Chapter 1 Hardware Installation

    Chapter 1 Hardware Installation Installation Precautions The motherboard contains numerous delicate electronic circuits and components which can become manual and follow these procedures: Prior to installation, make sure the chassis is suitable for the motherboard. Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or warranty sticker provided by your dealer.
  • Page 6 5200 MT/s Chipset Memory memory is installed, the actual memory size displayed will be less than the size of the physical memory installed. (Go to GIGABYTE's website for the latest supported memory speeds and memory modules.) Audio ® ALC1150 codec 2/4/5.1/7.1-channel...
  • Page 7 South Bridge: 12 x USB 2.0/1.1 ports (6 ports on the back panel, 6 ports available through the internal USB headers) ® 4 x USB 3.0/2.0 ports (2 ports on the back panel, 2 ports available through the internal USB header) ASMedia ®...
  • Page 8 System Form Factor ATX Form Factor; 30.5cm x 24.4cm prior notice. Please visit GIGABYTE's website Please visit the Support\Utility List for support lists of CPU, memory page on GIGABYTE's website to download the latest version of apps. - 8 -...
  • Page 9: Installing The Cpu

    Make sure that the motherboard supports the memory. It is recommended that memory of the same capacity, brand, speed, and chips be used. (Go to GIGABYTE's website for the latest supported memory speeds and memory modules.) Always turn off the computer and unplug the power cord from the power outlet before installing the memory to prevent hardware damage.
  • Page 10: Installing An Expansion Card

    2 Modules 4 Modules of the same capacity, brand, speed, and chips be used and installed in the same colored sockets. For Installing an Expansion Card Make sure the motherboard supports the expansion card. Carefully read the manual that came with your expansion card.
  • Page 11 If you want to install a Side Speaker, you need to retask either the Line in or Mic in jack to be Side Speaker out through the audio driver. Please visit GIGABYTE's website for more software information. device and then remove it from the motherboard.
  • Page 12: Internal Connectors

    Internal Connectors ATX_12V F_AUDIO SPDIF_O CPU_FAN F_USB30 SYS_FAN1/2 F_USB1/F_USB2/F_USB3 PWR_FAN COMA SATA3 0/1/2/3/4/5 M2F_20G F_PANEL CLR_CMOS First make sure your devices are compliant with the connectors you wish to connect. Before installing the devices, be sure to turn off the devices and your computer. Unplug the power cord from the power outlet to prevent damage to the devices.
  • Page 13 1/2) ATX_12V/ATX (2x4 12V Power Connector and 2x12 Main Power Connector) With the use of the power connector, the power supply can supply enough stable power to all the components off and all devices are properly installed. The power connector possesses a foolproof design. Connect the power supply cable to the power connector in the correct orientation.
  • Page 14 3/4/5) CPU_FAN/SYS_FAN1/SYS_FAN2/PWR_FAN (Fan Headers) insertion design. When connecting a fan cable, be sure to connect it in the correct orientation (the black connector wire is the ground wire). The speed control function requires the use of a fan with fan speed control design.
  • Page 15 7) M2F_20G (M.2 Socket 3 Connector) array. 110F Step 1: Use a screw driver to unfasten the screw and nut from the motherboard. Locate the proper mounting hole Step 2: Step 3: AHCI/RAID mode: Connector M.2 PCIe x4 (Note) M.2 PCIe x2 (Note) Installed : Supported,...
  • Page 16 8) F_PANEL (Front Panel Header) Connect the power switch, reset switch, speaker, chassis intrusion switch/sensor and system status indicator on the chassis to this header according to the pin assignments below. Note the positive and negative pins before connecting the cables. PLED/PWR_LED Power Switch Speaker...
  • Page 17 10) SPDIF_O (S/PDIF Out Header) cards) for digital audio output from your motherboard to certain expansion cards like graphics cards and Pin No. 11) F_USB30 (USB 3.0/2.0 Header) Pin No. Pin No. SSTX2+ SSTX1- SSTX2- SSTX1+ No Pin 12) F_USB1/F_USB2/F_USB3 (USB 2.0/1.1 Headers) optional USB bracket.
  • Page 18 13) COMA (Serial Port Header) The COM header can provide one serial port via an optional COM port cable. For purchasing the optional COM port cable, please contact the local dealer. Pin No. Pin No. NSIN NSOUT NCTS- No Pin 14) TPM (Trusted Platform Module Header) You may connect a TPM (Trusted Platform Module) to this header.
  • Page 19: Chapter 2 Bios Setup

    When the power is turned off, the battery on the motherboard supplies the necessary power to the CMOS to To upgrade the BIOS, use either the GIGABYTE Q-Flash or @BIOS utility. Q-Flash allows the user to quickly and easily upgrade or back up BIOS without entering the operating system.
  • Page 20: Startup Screen

    Startup Screen The following startup Logo screen will appear when the computer boots. Function Keys to accept or enter a sub-menu. Or you can use your mouse to select the item you want. When the system is not stable as usual, select the Load Optimized Defaults item to set your system to its defaults. The BIOS Setup menus described in this chapter are for reference only and may differ by BIOS version.
  • Page 21 M.I.T. Current Status This screen provides information on CPU/memory frequencies/parameters. Advanced Frequency Settings BCLK Clock Control Important: It is highly recommended that the CPU frequency be set in accordance with the CPU CPU NorthBridge Frequency Allows you to alter the North Bridge controller frequency for the installed CPU. The adjustable range is dependent on the CPU being installed.
  • Page 22 Core C6 State (Note 1) Allows you to determine whether to let the CPU enter C6 mode in system halt state. When enabled, the CPU core frequency will be reduced during system halt state to decrease power consumption. The C6 HPC Mode (Note 1) Allows you to determine whether to enable High Performance Computing (HPC) mode for the CPU.
  • Page 23 Channel A/B Timing Settings This sub-menu provides memory timing settings for each channel of memory. The respective timing setting DRAM Timing Selectable is set to Quick or Expert. Note: Your system may become unstable or fail to boot after you make changes on the memory timings. If this occurs, please reset the board to default values by loading optimized defaults or clearing the CMOS values.
  • Page 24: System Information

    Silent Allows the fan to run at slow speeds. Manual Allows you to control the fan speed under the Slope PWM item. Slope PWM 1st System Fan Speed Control is set to Manual. Options are: 0.75 PWM value / C ~ 2.50 PWM value / System Information This section provides information on your motherboard model and BIOS version.
  • Page 25: Bios Features

    A password is required for booting the system and for entering the BIOS Setup program. Full Screen LOGO Show Allows you to determine whether to display the GIGABYTE Logo at system startup. Disabled skips the Windows 8 Features - 25 -...
  • Page 26 CSM Support Enables or disables UEFI CSM (Compatibility Support Module) to support a legacy PC boot process. Windows 8 Features is set to Windows 8 or Windows 8 WHQL. Boot Mode Selection Allows you to select which type of operating system to boot. CSM Support is set to Always.
  • Page 27: Peripherals

    Peripherals Initial Display Output Audio LED OnChip SATA Controller OnChip SATA Type to AHCI mode. - 27 -...
  • Page 28 OnChip SATA Port4/5 Type (SATA3 4/SATA3 5 connectors) OnChip SATA Type is set to RAID or AHCI mode of the integrated SATA3 4~SATA3 5 connectors. As SATA Type The mode depends on the OnChip SATA Type settings. HD Audio Azalia Device If you wish to install a 3rd party add-in audio card instead of using the onboard audio, set this item to Disabled.
  • Page 29 Trusted Computing Security Device Support Enables or disables Trusted Platform Module (TPM). Set this item to Enable when a TPM device is installed. Serial Port A - 29 -...
  • Page 30: Power Management

    Power Management Resume by Alarm If enabled, set the date and time as following: Wake up hour/minute/second: Set the time at which the system will be powered on automatically. Note: When using this function, avoid inadequate shutdown from the operating system or removal of the AC power, or the settings may not be effective.
  • Page 31: Save & Exit

    Power On Password Set the password when Power On By Keyboard is set to Password. again without entering the password to clear the password settings. Power On By Mouse Allows the system to be turned on by a PS/2 mouse wake-up event. Move Move the mouse to turn on the system.
  • Page 32: Chapter 3 Appendix

    Load Optimized Defaults Yes to load the optimal BIOS default settings. The BIOS defaults settings help the system to operate in optimum state. Always load the Optimized defaults after updating the BIOS or after clearing the CMOS values. Boot Override Select File in HDD/FDD/USB If your system becomes unstable and you have loaded the BIOS default settings, you can use this function...
  • Page 33 Steps: OnChip SATA Controller is enabled under Peripherals set OnChip SATA Type to RAID OnChip SATA Type to RAID and set OnChip SATA Port4/5 Type to As SATA Type. The BIOS Setup menus described in this section may differ from the exact settings for your motherboard. The actual BIOS Setup menu options you will see shall depend on the motherboard you have and the BIOS version.
  • Page 34 array on the SATA controller. Steps: After the POST memory test begins and before the operating system boot begins, look for a message which LD View Menu access the In the Installing the SATA RAID/AHCI Driver and Operating System With the correct BIOS settings, you are ready to install the operating system. Installing the Operating System (The following instructions use Windows 8.1 as the example operating system.) Step 1:...
  • Page 35 After installing the operating system, insert the motherboard driver disk into your optical drive. Click install. You can click the Xpress Install the arrow icon to individually install the drivers you need. Please visit GIGABYTE's website for more software information. - 35 -...
  • Page 36 Contravention will be prosecuted. We believe that the information contained herein was accurate in all respects at the time of printing. GIGABYTE cannot, however, assume any responsibility for errors or omissions in this text. Also note that the information in this document is subject to change without notice and should not be construed as a commitment by GIGABYTE.
  • Page 37 FCC Notice (U.S.A. Only) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
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  • Page 40: Contact Us

    Contact Us GIGA-BYTE TECHNOLOGY CO., LTD. TEL: +886-2-8912-4000, FAX: +886-2-8912-4005 Tech. and Non-Tech. Support (Sales/Marketing) : http://esupport.gigabyte.com WEB address (English): http://www.gigabyte.com WEB address (Chinese): http://www.gigabyte.tw GIGABYTE eSupport To submit a technical or non-technical (Sales/Marketing) question, please link to: http://esupport.gigabyte.com - 40 -...

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