X99-A II

    1USB BIOS Flashback
    2Intel® LAN
    34 x USB 3.0
    42 x USB 3.1
    (1 x Type-A and 1 x Type-C)
    58CH Audio with DTS Support
    63 x PCIE 3.0(GEN3)
    3-Way SLI & CFX Support
    7

    Crystal Sound 3

    • Power pre-regulator
    • Top notch audio profile
    • EMI protection cover
    • Audio shielding
    • Unique De-pop circuit
    • Audio amplifer
    • Separate layers for left/right track
    • Premium Japan-made audio capacitors
    8DIGI+ Power Control
    9EPU
    10

    O.C. Socket

    Intel® LGA 2011-v3 Socket
    11DDR4 3333(O.C.) Support
    124 x USB 3.0
    13Asus SafeSlot
    14SATA Express
    158 x SATA 6Gb/s
    16U.2
    1732Gb/s M.2 X4 support
    18TPU
    19RGB header
    Tune it to your will
    Unleash the true performance of new Intel Core i7 processor family for socket LGA 2011-v3 in future

    ASUS X99 Series motherboards are engineered from the ground up to get the most from new Intel® Core™ i7 processor family for socket LGA 2011-v3 and extract every ounce of performance from Intel's latest architecture. ASUS delivers the BEST of motherboards for gamers, enthusiasts, content creation professionals and passionate DIYers.

    Drive CPU and DDR4 performance beyond all expectations!
    ASUS Pioneered OC Socket

    Designed to break performance barriers, ASUS OC Socket utilizes extra pins to connect a proprietary circuit to contacts found on land grid array (LGA). Combined with our customized UEFI, this exclusive feature enables higher DDR4 memory frequencies, lower latencies and enhanced stability while overclocking, extending all the way to extreme overclocking conditions, such as liquid nitrogen (LN2). OC Socket is 100% compatible with all LGA 2011-v3 CPUs, ensuring the ideal combination of overclocking performance and compatibility.

    Other X99 Sockets

    Voltage
    CPU Core 0 Voltage 1.728v

    Huge voltage drop on other X99 motherboard

    OC Socket

    Voltage
    CPU Core 0 Voltage 1.824v

    Almost no voltage drop with OC Socket

    Under 100% load with CPU voltage set to extreme 1.825v

    Testing configuration: CPU: Intel Core i7-5960X | MB: X99-A II | DDR4: Corsair DDR4-2133*4 | GFX: GTX680 | OS: Windows 7 64-bit, Prime95

    Better Protection from Overcurrent

    The extra 4-pin power plug shares current with the standard 8-pin power connector to balance loads and provide ample margin to overclock Intel's latest CPUs to the limit.
    Unique Cache Bus Voltage Adjustment

    The cache bus links areas such as CPU cores, DDR4 memory controllers, system agent and the shared L3 cache — so it’s a critical interconnect for the whole CPU subsystem. A higher cache-bus frequency directly accelerates subsystem performance, so ASUS OC Socket exclusively provides an adjustable cache-bus voltage to reach higher cache bus frequencies.



  • Reference tuning ratio range is up to 30. ASUS OC Socket tuning ratio range is 45+!
  • Cache bus links all the essential CPU areas together. Higher cache bus frequency boosts PC performance!
  • 3DMark Physics

    10%

    PERFORMANCE INCREASE

    0

    0

    Reference design

    OC with X99-A II

    Memory frequency

    40%

    PERFORMANCE INCREASE

    0

    MB/s

    0

    MB/s

    Reference design

    OC with X99-A II

    DDR4 read speed

    21%

    PERFORMANCE INCREASE

    0

    MB/s

    0

    MB/s

    Reference design

    OC with X99-A II

    DDR4 write speed

    36%

    PERFORMANCE INCREASE

    0

    MB/s

    0

    MB/s

    Reference design

    OC with X99-A II

    3DMark Physics
    CPU: Intel Core i7-5960X 4.8G| MB: X99-A II | DDR4: Corsair DDR4-2133*4 | GFX: GTX780 | OS: Windows7 64-bit

    AIDA64 memory benchmark
    CPU: Intel Core i7-5960X | MB: X99-A II | DDR4: Corsair DDR4-2133*4 | GFX: GTX780 | OS: Windows7 64-bit

    Make your memory go faster

    Drive your memory frequencies to 3333MHz and beyond! ASUS-exclusive T-Topology circuit design plus OC Socket provides a superb memory-overclocking capability to unleash the full power of DDR4 by minimizing coupling noise and signal reflection. With innovative equidistant memory channels, it delivers the most balanced control and powerful overclocking compatibility. ASUS works with almost every DDR4 memory vendor to ensure the best compatibility.

    One click overclock and cooling, done!
    5-way Optimization

    One click takes care of all that complex tuning. Your PC is smart with ASUS 5-Way Optimization. It dynamically optimizes essential aspects of your system based on real-time use — so you get superb CPU performance, everyday energy savings, ultra-stable digital power, cool and quiet fans and now even networking and audio settings that are tailored for the apps that you are using. In short, 5-Way Optimization ensures that your PC is perfect for gaming, entertainment, productivity or just about anything else!

    • Games run swiftly and smoothly with high performance, prioritized bandwidth and vivid sound.
    • Fans stay whisper-quiet for everyday computing, and ensure extreme cooling efficiency when gaming.
    • Energy waste is reduced so you'll save money.
    Overclock CPU

    Speed

    43%

    0

    G

    0

    G

    O.C.

    Default

    Overclocked CPU

    Silence

    up to

    1000 RPM

    reduction

    0

    RPM

    0

    RPM

    Away mode

    Default

    Extreme Quiet Mode

    Saving

    14%

    0

    W

    0

    W

    Away mode

    Default

    Away Mode

    Testing configuration:
    Intel LGA2011-3 i7-5960X 140W | X99-A II | CRUCIAL SSD 64G |ENERMAX EMR1350EWT 1350W | ASUS PB278Q 27” | MICRON MTA8ATF52164AZ-2G1A1 4GB*2 | GTX650Ti-DC2T-1GD5*1
    • CPU performance boost
    • All-round energy efficiency
    • Advanced fan controls
    • Precise Digital Power Control
    • Game faster, rank higher
    CPU performance boost

    TPU

    Unleash your PC's full performance with a simple two-phase onboard switch or the ASUS AI Suite 3 utility! The TurboV Processing Unit (TPU) offers precise voltage control and advanced monitoring for the CPU and the graphics card, enabling great freedom to adjust CPU frequencies and ratios for optimized performance and to exploit the potential out of your graphics card*.

    *Please see the graphics card QVL
    All-round energy efficiency

    Cut off add-on IC power

    EPU

    With the Energy Processing Unit (EPU) you'll enjoy real-time, system-wide power savings. EPU detects and adjusts power consumption according to the PC's needs — automatically. It can also reduce CPU wattage to a set level and deliver even more savings with Away Mode. This creates an extreme energy-saving scenario by shutting down unused extra I/O controllers and reduces the graphics cards' power level while you're away, so the PC consumes only the energy it needs — and not a drop more!

    Flexible cooling controls for air and liquid

    The latest ASUS X99 motherboards feature the most advanced cooling capability to date, controllable from both Fan Xpert 4 and UEFI.

    Fan connectors

    Pump Fan

    Thermal sensor

    Fan Ext Header

    Water Pump Header

    Full control of PWM or DC water pumps, perfect for both custom and self-contained cooling setups.

    High-amp fan support

    A dedicated fan header that can supply up to 3 Amps, for high-speed high-current fans.

    Multiple temperature sources

    Multiple temperature sources: Each header can be set to monitor and react up to 3 multiple thermal sensors.

    4-pin PWM/DC fan support with Auto Detection

    Every onboard header supports auto detection of PWM or DC fans.

    Smart Protection

    A dedicated integrated circuit that protects each fan header from both over-temperature and over-current.

    Fan Ext Header

    Next Page >
    • Comprehensive fan controls:

      Full control of fan speeds, hysteresis, and fan stop modes on every header, via Fan Expert 4 or the UEFI.
    • Auto-Tuning Mode:

      Scans fan parameters and all fans with a single click.
    • Extreme Quiet Mode:

      Reduces all fan speeds to below the default minimum, for extra-quiet operation and power savings during light loads.
    « Previous Page
    Precise Digital Power Control

    DIGI+ Power Control

    Power control is one of the most essential motherboard designs. Intelligent CPU-power-draw detection with ASUS DIGI+ Power Control is an innovative, industry-leading technology that fully complies with Intel® IMVP8 specifications, increasing overclocking potential, enhancing system stability, and improving power efficiency with superior flexibility and accurate control.
    App specific optimization for professionals and gamers

    Turbo App

    Whether hardcore gamer or business professional, you'll feel the benefit of the ASUS-exclusive Turbo App every day. Its intuitive tuning panel boosts a range of hardware, overclocking your CPU, tuning your fans, prioritizing network data and optimizing audio settings — all with automated ease!
    Media-acclaimed UEFI BIOS
    The smoothest, slickest mouse-controlled graphical BIOS has been improved to make it even more appealing. Whether you're a PC novice or a seasoned overclocker, the EZ and Advanced Modes help you find your way, quickly and easily.
    EZ Flash 3
    Update the latest BIOS via the internet, and from within the BIOS.
    S.M.A.R.T
    Check up your storages devices' Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T) logs to gauge reliability, and even determine if they’re about to fail.
    EZ Tuning Wizard — OC and RAID
    Select your hardware and apply different scenarios to tune system performance, or streamline your RAID configuration for faster data retrieval and backups!
    My Favorites
    Quickly find tuning options and add preferred tools to the list.
    EZ Mode
    • Intuitive Graphical Fan Control: Fine-tune individual fans simply by dragging a curve with the mouse.
    • EZ XMP: Improve your DRAM performance with a click.
    • SATA Information: View SATA port details for easy device recognition.
    • Fast Clock Adjustment: Use mouse controls to change the time and date.
    Advanced Mode
    • GPU POST: Recommendation for multi-VGA configuration and detailed .
    • Secure Erase: Restore your SSDs to factory-fresh condition.
    • Last Modified Log: Track last change and save preferred profiles onto a USB drive.
    • SATA Port Renaming: Rename SATA ports for easy identification.
    • Aura (LED Control) Customize your favorite RGB LED style direct from the BIOS.
    Make it your own
    Brighten up your build
    AURA Lighting Control
    A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB control with a variety of functional presets for both built-in RGB LEDs, as well as LED strips connected to the onboard 4-pin RGB headers, all of which can be synced with an ever-growing portfolio of Aura-capable ASUS hardware.

    Static

    Breathing

    Strobing

    Music effect

    Comet

    Flash & Dash

    Rainbow

    Color Cycle

    CPU temperature

    AURA 4-PIN RGB-STRIP HEADER

    Patent-pending SafeSlot
    Protect Your Graphics Card Investment

    SafeSlot is the PCIe slot reinvented by ASUS and engineered to provide superior retention and shearing resistance. Manufactured in a single step using a new insert-molding process integrates the slot with the fortifying metal for an inherently stronger slot, which is then firmly anchored to the PCB through additional solder points.

    Multi-GPU support

    With support for both NVIDIA® SLI™ and AMD CrossFireX™ 2/3-WAY configurations, the X99 motherboard enables multi-GPU setups so you can harness the full power of the latest graphics technologies to drive games at 4K and beyond.

    • CPU 40 Lane 3-Way/2-Way
    • CPU 28 Lane 3-Way/2-Way

    Flawless audio that

    makes you part of the game

    Crystal Sound 3
    1
    Noise Isolation
    Separate layer for left and right tracks
    Ensures both channels deliver consistent, equal quality.
    2
    Audio shielding
    Ensures precision analog/digital separation and greatly reduced multi-lateral interference.
    3
    Clean Power
    Power pre-regulator
    Reduces power-input noise to ensure consistent performance.
    4
    Audio Enjoyment
    Audio amplifier
    Produces the highest-quality sound for headphone and speakers.
    5
    De-pop circuit
    Reduces start-up popping noise to all audio outputs.
    6
    Premium Japanese-made audio capacitors
    Provides warm, natural, and immersive sound with exceptional clarity and fidelity.
    Intel Ethernet
    More throughput, less CPU usage and great gaming experiences
    X99-A II features the very latest Intel® Ethernet for faster, smoother gaming — always. Intel's LAN has the serious double advantage of reducing CPU overhead and offering exceptionally high TCP and UDP throughput. This significantly reduces the processor's workload, so there's more power for your game and your gameplay!
    Turbo LAN
    Network-optimization software for customizable packet prioritization
    Turbo LAN with cFosSpeed traffic-shaping technology adds even more lag-reducing support and intuitive user interface. It allows you to lower lag with no expert knowledge — by up to 1.45X! If you're a tweaker, use Advanced Mode for hardcore controls.
    1Real-time speed monitor
    2Grouping your own favorite list
    3Set priority to speed up for your application
    LANGuard
    Pumped-up throughput. 2.5X higher surge tolerance.
    ASUS LANGuard is hardware-level networking protection that employs signal-coupling technology and premium anti-EMI surface-mounted capacitors ensuring a more reliable connection and better throughput, plus electrostatically-guarded and surge-protected components for greater tolerance to static electricity and improved protection against surges.
    Connect with Unparalleled Speed
    Ultimate-speed 10Gbps with USB 3.1 onboard
    With USB 3.1 Type-A ports , which is completely backward-compatible with your existing USB devices, and reversible USB 3.1 Type-C for the very fastest USB data transfers, you'll experience data-transfer speeds of up to 10Gbps — or twice as fast USB 3.0. And you'll be all set for USB 3.1's breakneck speeds. And ASUS-exclusive USB 3.1 Boost technology automatically accelerates USB 3.1 performance even further!
    Join the NVMe revolution with built-in U.2 connector
    Unlock the full potential of your storage with NVM Express (NVMe), the revolutionary specification that lets your SSDs scream at top speed. Just attach your drive to the built-in U.2 connector with plug-and-play ease to experience data-transfer speeds of up to 32Gbps — and free up a PCIe slot for another expansion card!
    Fast storage speed with SATA Express
    Current SSDs devour up to 550MB/s bandwidth, which is close to saturation point for SATA 6Gbps connections. Backwardly compatible with up to two SATA drives, SATA Express is the next-generation connectivity standard — and ensures that you and your system won't get left behind.
    Speed up with onboard M.2 up to 32Gbit/s
    With x4 PCI Express 3.0/2.0 bandwidth, M.2 supports up to 32Gbps data-transfer speeds. It is the perfect choice for an operating system or application drive, making your whole PC or professional apps work as fast as possible.
    Upgrade with ThunderboltEX 3 to experience blistering speeds and any-way-up connectivity
    ASUS X99-A II offers support for ThunderboltEX 3 card, an Intel-certified Thunderbolt™ 3 add-on card enables breathtaking bi-directional speeds up to 40Gbps - four-times faster than other PC data-transfer cables with twice the video bandwidth for the latest 60 Hz 4K/UHD displays. Beyond sheer bandwidth, Thunderbolt 3 supports daisy-chaining up to six devices, utilizes a Type C reversible connector for compatibility with the latest USB 3.1 Type-C devices and supports the USB Power Delivery specification for fast, high-power charging of up to 36W.
    >>Learn More
    *Available to purchase separately.
    Seamless Entertainment
    Total control anytime, anywhere with Remote GO!
    Remote GO! gives you complete control of your PC — even when you're away from home. Access your forgotten files at home, and work on your PC from almost anywhere. Plus, it takes just one click to manage all your public clouds or sync files across your PC and devices!
    Cloud GO!
    Gather your ASUS WebStorage, Dropbox®, Google Drive™, and OneDrive® accounts in one place and even back up to PC at the same time.
    Remote Desktop
    Easily access and control your PC, anytime and anywhere!
    File Transfer
    Sync files between your PCs and smart devices with just a click!
    Remote Keyboard & Mouse
    Control media playback from your sofa!
    Your digital PC hub for sharing and home theater
    Media Streamer
    Enjoy your PC's multimedia content — anywhere! Pipe music from your PC or cloud storage, including ASUS WebStorage, Dropbox, Google Drive and OneDrive while sipping coffee in a café, or sit back with friends and stream a favorite movie to a smart TV. With ASUS Media Streamer, your entertainment goes wherever you go.
    Watch your smart device content on the big screen
    HyStream
    With HyStream you’ll enjoy the ease and freedom of streaming HD content from your supported* Apple iOS smartphone or tablet straight to your bigger screen!

    * Contact your device vendor for support information.
    All-in-one control between your PC and smart device
    Mobo Connect
    Work with your PC and smart device at the same time through a single keyboard-and-mouse set. A simple hot key lets you switch between your PC and smart device quickly. It even charges your mobile device at the same time.
    EZ DIY
    You will love DIY!
    We understand how you use your PC. From assembly, system setting and monitoring, and to firmware and hardware updates - we're all about making your life easier. That's why we never stop developing new and exciting DIY opportunities to make PC DIY easy, fun and free from hassle!
    MORE
    Intel® CoreTM X -Series processors Installation Tool
    Easy CPU installation, no more damaged pins
    X99-A II has the ASUS-exclusive CPU-installation tool to prevent pin damage. Just pop the latest Intel® Core™ i7 X -series (LGA 2011-v3) processor into the tool, and then insert the package into the CPU socket. Close the latches and you’re good to go!
    MORE
    PC Cleaner
    Work faster, start quicker and smoother
    Your computer is running slow? PC Cleaner sweeps out unused and unwanted files and programs that take up space in your storage drives, eliminating the clog. It also accelerates PC start-up with a click!
    MORE
    Q-DIMM
    Easy memory removal
    Even if you work with a smaller case, just push down on the one-sided clip and push or pull RAM modules in or out — couldn't be simpler!
    MORE
    Q-Slot
    Effortless PCI Express component removal
    The large winged clip is easy to reach and easy to operate. Just press the Q-Slot clip lightly, and graphics card just pop out. Installing or removing even the biggest graphics cards is no sweat!
    MORE
    Q-Connector
    Easy, quick, and accurate connections
    You no longer need to worry about which front-panel wire goes where. Just pop the wires into Q-Connector's one-piece plug and you’re good to go.
    MORE
    Q-Shield
    Easy and safe on fingers
    Unlike other I/O shields, with their sharp edges, the exclusive Q-Shield is soft and pliable to protect your hands from cuts.
    MORE
    Q-LED
    Easy PC diagnostics
    Q-LED indicates problems with the CPU, memory, graphics card or boot device, so you can quickly diagnose and remedy any issues — and wave goodbye to endless frustrations!
    MORE
    Q-Code
    Detailed PC status display and diagnostics
    Instantly recognizes and displays the POST status for precise troubleshooting. Just check the code in the user guide to solve your problem.

    *The CPU Installation Tool is compatible only on selected motherboards

    Intel CPU and chipset features
    Intel® Core™ i7 Processor LGA2011-v3 Ready
    This motherboard supports Intel® Core™ i7 processors in the LGA2011-v3 package, with memory and PCI Express controllers integrated to support 4-channel (8 DIMM) DDR4 memory and 40/28 PCI Express 3.0/2.0 lanes.
    Intel® X99 Chipset
    The Intel® X99 Chipset is a single-chipset design that supports new Intel® Core™ i7 processor family for socket LGA 2011-v3 processors. It provides improved performance by utilizing serial point-to-point links, allowing increased bandwidth and stability. Additionally, X99 provides a maximum 6 USB 3.0 ports, 10 SATA 6Gbps ports and 32Gbps M.2 support for faster data retrieval.