• Supports New Intel® Core™ i7 processors Extreme Edition in LGA 2011-3 socket
  • Supports Quad Channel DDR4-3333(OC) Memory
  • Support lntel® Turbo Boost Max Technology 3.0
  • Turbo M.2: delivering next generation M.2 Gen3 x4 performance with transfer speeds up to 32 Gb/s
  • SATA Express + USB 3.0 + SATA 6Gb/s
  • 4-way Multi-GPU: 4-way NVIDIA SLI & AMD CrossFire Support
  • OC Engine: For More Flexible BCLK Adjustments
  • OC Certified: Military Class Burn-in Test Passed
  • Enhanced Thermal Design
  • V-Check Points 2: 3 multi-meters at the same time
  • Delid Die Guard: Way to Break World Record
  • CeaseFire: Easily Disable PCI Express Slots Using An Onboard Switch
  • Guard-Pro: Improved Protection and Power Efficiency
  • Military Class 4: Top Quality & Stability
  • OC Essentials: Convenient Set Of Overclocking Tools While Breaking World Records
  • OC Genie 4: Overclock in 1 Second
  • Click BIOS 4: Easily Fine-tune Your System
  • Wi-Fi 802.11AC with speeds up to 867Mbps, Bluetooth 4.0

MSI X99 XPOWER AC motherboard

No Limits

The MSI Overclocking motherboards are designed based on four principles:

  • Continuous implementation of professional overclockers' feedback
  • Continue MSI's leading position in power efficiency and stability
  • The best overclocking tools
  • Infuse the DNA of MSI's LIGHTNING graphics cards

Changing the overclocking game

  • OC Certified
  • Built with LIGHTNING DNA
  • Enhanced components
  • Enhanced power
  • Enhanced thermal design
  • Military Class components
  • Extreme OC socket design
  • OC PCB
  • Optimized overclocking BIOS
  • OC Essentials
  • DigitALL power PWM
  • Video
  • Video
  • Video

OC CertifiedOC Certified

OC Certified is a military class burn-in test for motherboards. Running Prime95 for over 24 hours with a highly overclocked CPU is already a stressing endeavor, but removing all airflow from the motherboard ensures that only the best motherboards survive. If a motherboard can survive this, it can survive any overclocking situation.

MSI Overclocking motherboards are equipped with all the necessary features to make sure you get the most out of your system. From the Enhanced PWM with a large amount of power phases and Thermal Design that give you the best stability, to all the easy features that ensure that you don't have to perform a lot of tricks to get great stability in your quest for performance.


The OC PCB used for the MSI overclocking motherboards has a completely new design in which 50% more layers are used compared to standard motherboards. This allows us to optimize all traces for overclocking. Power and signal traces are isolated, resulting in higher efficiency and performance and more features can be installed relatively close to each other without causing interference. Every MSI overclocking motherboard is tuned for better stability under extreme circumstances:

  • Increased number of PCB layers
  • Increased humidity resistance
  • Tight weave Fiberglass PCB
  • Increased ESD protection

DigitALL Power PWM

DigitALL Power digitally steers and receives feedback through a DigitALL PWM controller. This allows for pinpoint voltage delivery and lower power consumption.

Thermal design

Besides inspiring visual awe the XPOWER Thermal Design was developed to deliver the highest cooling potential in the worst situation. Because it is optimized to work in low-airflow situations, it is the ideal cooling to use with your liquid cooling setup.

  • XPOWER thermal design
  • SuperPipe
  • Low airflow
  • Optimized design
  • Clear CPU space
  • Metal screws

Extreme OC Socket Design

What is more frustrating than not being able to properly fit your cooling solution on your motherboard? Through feedback from professional overclockers, extensive research, unique design and the use of Military Class 4 components, we were able to create a lot of space around the socket making sure you can fit any cooling solution you want. Having this much space also makes it easier to insulate the motherboard for use with LN2 or other extreme cooling solutions.


OC Backplate

Mounting your LN2 pot or other extreme cooling solution can be a real hassle when using the stock X99 backplate, because it blocks the necessary screwholes. That's why MSI created the OC backplate. A low profile backplate which is perfectly flat and gives full access to the screwholes needed to mount your extreme cooling solution. The OC Backplate generates optimal mounting pressure. This leads to lower CPU temperature and maximizes overclocking results. You can also combine the OC Backplate with the MSI Delid Die Guard for even better mounting and cooling results.



more speed, more bandwidth, less power

MSI engineers made sure you can enjoy high speed DDR4 compatibility. DDR4 brings higher memory speeds at even lower power usage as low as 1.2v.

DDR4 offers higher volume sticks, this means larger memory configurations are possible up to 128GB.


Protective I/O cover

A black design I/O Cover with OC Series imprinted doesn't only look cool, but it also protects against Electro Magnetic Interference. Making sure whatever device you connect, you will always receive a pure signal.

Protected I/O cover

OC Engine

Run into unstable situations when pushing your CPU to the limit? This occurs because the internal clocks are linked through the 100 MHz BCLK strap. Thanks to a integrated Clock Generator, MSI motherboards support more flexible BCLK adjustments, from 100 / 125 / 167 MHz straps.

Using these straps prevents system crashing while overclocking on the edge and opens doors to achieve the absolute maximum. The MSI X99 motherboards all come with the next generation Clock Generator offering even lower jitter and power consumption resulting in even higher stability under extreme conditions.

OC Engine

Delid Die Guard

Whether it's for 24/7 overclocking use or breaking world records, the MSI Delid Die Guard helps with your air, water or subzero overclocking activities.

This solid mounting system makes it easier to mount a delidded CPU and helps to achieve lower CPU temperatures, making sure you can squeeze every MHz out of it. Whether you are a beginner in overclocking or a veteran, we hand you the tools to succeed.

  • Helps to lower CPU temperature
  • Easier and more stable fitting of cooling solution
  • Protecting the die of your CPU
  • Generate optimal mounting pressure
Delid Die Guard

OC Fan Stand

Having trouble with your fans while overclocking? Are they falling over all the time when accidently touched? The MSI OC Fan Stand lets you easily set up your fans while overclocking without worrying about them falling over when your in pursuit of that world record. A sturdy, cool looking, and easy to use design makes setting up fans a whole lot easier.

Fan is not included
OC Fan Stand

OC EssentialsOC Essentials

A small set of tools that are essential to get the best performance out of your motherboard. These features increase stability, assist in trouble shooting, allow you to keep your complete system in check and allow for simple management. This way you can keep your mind on overclocking.

Easy Buttons 3
V-Check Points 2
Debug LED
Clear CMOS
Direct USB

Slow Mode

Slow Mode helps to defeat booting issues when overclocking at extremely high CPU frequencies. Flicking the switch will temporary decrease CPU ratio to 12x, creating stability to successfully boot to Windows.

OC Genie

One-second overclocking by simply pressing the OC Genie button. OC Genie 4 now has the ability to switch between 2 gears.

Mode CPU speed
No OC Genie 100%
Gear 1 120%
Gear 2 130%

Direct OC

  • 1 MHz / 0.1 MHz adj.
  • BLCK up
  • BLCK down
  • Multiplier up
  • Multiplier down

A set of + and – buttons allows you to adjust your Base Clock in real time, even during benchmarking. The Direct OC software allows you to select 1 MHz or 0.1 MHz increments. The X99S XPOWER AC allows for even better control because it is equipped with a switch on the motherboard which allowed you to make the 1MHZ or 0.1Mhz increments. On top of that it also comes with 2 extra Direct OC buttons to increase the multiplier ratio.

Complete Discharge

A true factory reset! Holding this button for 2 seconds completely wipes your motherboard from all settings. The CLR CMOS button only limits itself to the BIOS/VRAM but this Complete Discharge button even removes information from the X99 PCH, a much needed button on the X99 platform.

Direct USB

Direct USB allows for faster and more convenient ways of saving scores, flashing the BIOS and installing drivers & software when overclocking on an open test bed.

The Direct USB connector also allows for easy pre-testing of your hardware prior to installing it in a PC case.

Direct USB

V-Check Points 2

After MOA feedback we enhanced the V-Check Points with 2 extra ground connectors. This way overclockers can use 3 multi-meters at the same time.

Do not use CPU-Z to measure voltages!
The increased switching frequencies and incompatibilities lead to large deviations.

V-Check Points 2
  1. VCCIN: CPU Input Voltage
  2. DDR01: Memory Voltage - Channel A/B
  3. DDR23: Memory Voltage - Channel C/D
  4. VPP01: Memory VPP Voltage - Channel A/B
  5. VPP02: Memory VPP Voltage - Channel C/D
  6. Core: CPU Core Voltage
  7. GND: Ground
  8. GND: Ground
  9. GND: Ground

Optimized for
multiple graphics cards

4-Way SLI / Crossfire

4-Way SLI / Crossfire

The X99S XPOWER AC motherboard supports 4-Way SLI / CrossFire.Optimal PCI-Express slot placement allows for better fitting and airflow. That way, you can enjoy the best graphics at the highest framerate jumping off from your screen when running a NVIDIA® SLI™ or AMD CrossFire™ setup.


When you are overclocking with LN2 with 4 VGA cards and want to switch to 3 or 2 cards you normally would have to remove the cards. However, with the LN2 pot on the motherboard and all the insulation, removing the card can be a big hassle. With MSI CeaseFire, it is very easy to disable one of the PCI-E x16 slots with a simple without the need of removing the cards.

Fast storage
with SATA Express

SATA Express introduces a new solution in high speed storage through PCI-Express, providing more bandwidth for the latest generation SSDs up to 10 Gb/s.

Data transfer speed
SATA Express
Turbo M.2
Data transfer speed

Push your SSD
even harder with TURBO M.2

Delivering speeds up to 32Gb/s using Gen3 x4, Turbo M.2 is more than 5 times faster than a regular SATA III connection! Enjoy a blazing fast system boot up and insanely fast loading of applications and games with MSI motherboards.

Next generation M.2

Turbo M.2 is the successor to M.2 10 Gb/s, offering 3 times more performance up to 32 Gb/s using Gen3 x4. M.2 is packed in a small form factor and is compatible with 3 different sizes to fit most storage solutions. All latest generation Intel® based MSI motherboards feature Turbo M.2 storage.

Military Class 4 components

Military Class 4 is the next step in high quality components. The DrMOS II, Hi-C Cap, Super Ferrite Choke and Solid Caps will make sure that your PC runs more stable under extreme conditions.


DrMOS is the next-gen Mosfet which is used to deliver the power for the CPU. MSI DrMOS does not waste much power, stays cool and is more power efficient than other powersaving solutions. Because DrMOS is a 3-in-1 chip it delivers much more power with less components needed. This solution gives you the power to break world records.

Hi-c CAP

A Hi-c CAP is a very small, but super-efficient capacitor. Besides ensuring enough spacing around a CPU socket to install large coolers, it also allows for 93% energy efficiency. Thanks to Hi-c CAP`s MSI mainboards are the most energy efficient in the market.

Dark CAP

With their aluminum core design, Dark CAP's have been a staple in high-end motherboard design and provides lower Equivalent Series Resistance (ESR) as well as its over-10-year lifespan.

Super Ferrite Choke

Super Ferrite Choke uses a Ferrite core that is Super-Permeable. This allows the Super Ferrite Choke to run at a 35 degree Celsius lower temperature, have a 30% higher current capacity, a 20% improvement in power efficiency and better overclocking power stability.

Focus on quality

We put extra effort in increasing customer satisfaction. Our RMA rate has drastically decreased in the last few years. To achieve the highest quality the MSI Overclocking motherboards are developed by our most senior engineers on the most advanced production lines.

We are continuously improving our customer services, so in case you might run into a problem you can be assured we offer a fast response to your questions and hand you in depth information on the subject.

Focus on quality
Circuit Protection

Circuit Protection

Carefully selected materials, multiple PCB layers and shielding result in the best circuit protection for our overclocking motherboards.

ECO Power

ECO Power

With MSI ECO Center you can physically cut the power to unused chips to save up to 19% power usage.

Humidity Protection

Humidity Protection

10% Reduction in moisture absorption helps prevent "Conductive Anodic Filament". Untreated PCB's can have 10x higher failure rate.

High Temperature Protection

High Temperature Protection

All key components used in MSI motherboards have all passed military testing ensuring stable operation in the harshest environments.

ESD Protection

ESD Protection

Each and every I/O port is protected against the hazards of Electro Static Discharge.

EMI Protection

EMI Protection

All MSI motherboards comply with stringent American FCC regulations and reduce the impact of Electromagnetic Interference.

Click BIOS 4

The MSI Click BIOS 4 is the latest UEFI BIOS with optimizations for Windows 8.1 / Windows 10. Not only that it also reacts faster, runs smoother and has better mouse support. And this all comes with many cool features. Click on the button on the right to visit our dedicated BIOS page and learn more.

Click BIOS 4

Overclocking software

MSI Overclocking motherboards are equipped with advanced overclocking software tools to fine tune even the most in-depth OC settings with ease.

MSI Command Center

MSI Command Center

MSI's Command Center software is a very powerful tool to push your motherboard to the max. With a very intuitive touch ready interface, Command Center allows users to tune settings to increase system stability, maximize overclocking performance and adjust cooling features.

MSI Command Center Lite

MSI Command Center Lite

This lightweight overclocking tool doesn't need installation and doesn't occupy unnecessary system resources lowering system benchmark scores. With a single mouse click you have access to the most important overclocking features.



MSI Command Center integrates an unlimited RAMdisk with the retail value of $35. With a RAMdisk you can create a virtual drive from your system memory enabling speeds 20x faster than a modern SSD. There are options to load complete game images, you can speed up your browser or your page file which increases your whole game system performance.


Audio Boost

Reward your ears with true quality. Get ready for ear-drum shattering sound, with MSI Audio Boost! With Audio Boost we're delivering the highest audio quality so you can enjoy crystal clear sound and music in games.

Because the complete audio circuitry is isolated from other features, you'll enjoy less interference and more stability.

The built-in headphone amplifier allows you to use studio-grade headgear and get the most amazing sound quality out of your PC.

  • Studio level integrated 600Ω headphone amplifier
  • Golden audio jacks for pure audio signals
  • EMI shielded audio codec
  • High quality audio capacitors
  • Illuminated audio PCB separation
Unamplified signal
Dual AMPs
Nippon Chemi-con Filtering Capacitors
Amplified & Filtered signal
Gold plated connectors
Audio Boost

CPU Overcurrent Protection

When the MSI Overclocking motherboard detects a failure from hardware such as the CPU, it will shut down, prevent booting and protects other hardware from damage by disconnecting power to it. A red LED let's you know that overcurrent protection is active.

CPU Overcurrent Protection

OC Pen Drive

The MSI OC Pen Drive features a native driver pack for your MSI overclocking motherboard. You can install drivers faster, save and load OC Profiles, save and load the latest BIOS and much more. In addition, MSI OC Pen Driver has life-time warranty.

Pen Drive


Entering a BIOS can be a frustrating job. Because nowadays motherboards boot Lightning fast, we added the GO2BIOS button. Simply push it before you start or restart your system and you'll go straight to the system BIOS when your motherboard powers on.


Intel® Ethernet

Always connected with Intel® Gigabit LAN networking. Optimized for multimedia and gaming use to deliver a stable and fast network connection. Even when using LN2, to make sure you can upload your record-breaking scores.

Intel® Ethernet

Intel® Wi-Fi AC & Bluetooth

The MSI Overclocking motherboards come with an easily unpluggable Intel® Wi-Fi / Bluetooth module. The support of 802.11 AC and Bluetooth 4.0 ensures that you have the fastest available transfer speed.

867 Mbps
25 Mbps
Comes with 2 antenna
Intel® Wi-Fi AC & Bluetooth


Wi-Fi 802.11b/g/n/ac
& Bluetooth 4.0
Clear CMOS button
USB 3.0 ports
Intel® ethernet
/ USB 3.0 ports
Intel® ethernet
/ USB 3.0 ports
USB 3.0 Ports
8 ch. analog audio
/Optional S/PDIF-Out
PS/2 port
USB 2.0 ports

Package content

What's in the box? Check it out for yourself! Besides getting a Delid Die Guard, OC Fan Stand, a plethora of necessary cables and connectors you also get a cool Do-Not-Disturb door-hanger, a slick MSI OC series case badge, a set of cable labels and the stylish all black M-shield.

Front side of I/O panel

  • I/O Panel Ports Label
  • Dark coating

Back side of I/O panel

  • Force Absorbing Layer (NEW)
  • Aluminium Interference Shielding
  • Steel Shielding
Case badge Case badge
Door hanger Door hanger
Cable labels Cable labels


  1. All images and descriptions are for illustrative purposes only. Product specification, function, and appearance may vary based on different CPU and chipset. For detailed specifications, please consult the product specifications page.
В сегодняшнем обзоре мы познакомим вас с материнской платой MSI X99S XPOWER AC. Она разрабатывалась специально для любителей оверклокинга. И не важно, используете вы экстремальное охлаждение или повседневное, что-то необходимое именно вам точно найдете.
5/5 stars
La X99S XPOWER AC ha messo in mostra la consueta qualità costruttiva e doti di robustezza che caratterizzano i prodotti di questa serie, tutti espressamente progettati per andare incontro ad una clientela particolarmente esigente.
Ett moderkort som ger möjlighet att påverka minsta lilla komponent.
United Kingdom
This isn't just a quick motherboard, it was to be found at the top of nearly every graph we've got... We can't wait to discover how good it is once it matures.
Top Pick
We have no doubt to recommend the product as it looks fantastic, has a grand feature-set, overclocks (if your CPU allows it) and comes with a terrific audio solution, what's not to like?
Golden Bear
In summary MSI made a flat-out monster of a board that pulls some good performance ahead of boards tested to date and with the decent price positioning there is no reason why gamers could not make a monster machine with the new X99S XPOWER today!
Editor's Choice: Enthusiast GOLD Award
The MSI X99S XPower AC represents the pinnacle of MSI’s X99 motherboard lineup and has about every feature any computer hardware enthusiast could want.
Dadurch, dass die Taiwaner dieses Stück Hardware mit immensen Overclocking-Features überschüttet haben, wird genau diese Zielgruppe angelockt, die wirklich alles aus der CPU und dem Arbeitsspeicher herausholen will.
Great Product
MSi X99S XPower AC kortet overraskede mig fuldstændig, og ser man på den fine ydeevne kombineret med prisen, så vil jeg absolut anbefale kortet til enhver, der vil opgradere til X99 og Haswell-E. Derfor får MSi X99S XPower AC også scoren 9 + en Great Product Award
Editor's Choice
United Kingdom
Outstanding performance, abundant connectivity options and a rich feature set make MSI’s X99S XPOWER AC motherboard a brilliant choice for a high performance Haswell-E system. It’s niche, but it’s done well.
No­wy XPo­wer to je­den z tych pro­duk­tów, któ­re nie uzna­ją kom­pro­mi­sów. Te­sto­wa­na pły­ta głów­na, w cał­kiem uda­ny spo­sób, łą­czy mul­tum ofe­ro­wa­nych funk­cji z do­brą ja­ko­ścią wy­ko­na­nia.
Licence to overclock
No­wy XPo­wer to je­den z tych pro­duk­tów, któ­re nie uzna­ją kom­pro­mi­sów. Te­sto­wa­na pły­ta głów­na, w cał­kiem uda­ny spo­sób, łą­czy mul­tum ofe­ro­wa­nych funk­cji z do­brą ja­ko­ścią wy­ko­na­nia.
No­wy XPo­wer to je­den z tych pro­duk­tów, któ­re nie uzna­ją kom­pro­mi­sów. Te­sto­wa­na pły­ta głów­na, w cał­kiem uda­ny spo­sób, łą­czy mul­tum ofe­ro­wa­nych funk­cji z do­brą ja­ko­ścią wy­ko­na­nia.
  • Socket
  • CPU (Max Support)
  • Baseclock/Hyper Transport
    100 / 125 / 167MHz
  • Chipset
    Intel® X99 Express
  • DDR4 Memory
  • Memory Channel
  • DIMM Slots
  • Max Memory (GB)
  • PCI-Ex16
  • PCI-E Gen
  • PCI-Ex1
  • SATA Express
    10(2 x ports compatible with 1 x SATA Express port)
  • M.2 Slot
    1 x 2280 Key M(PCIe Gen3 x4/SATA)
  • RAID
    0/1/5/10(SATA1~6 only)
  • LAN
  • USB 3.0 ports (Front)
  • USB 3.0 ports (Rear)
  • USB 2.0 ports (Front)
  • USB 2.0 ports (Rear)
  • Audio ports (Rear)
    5 + Optical S/PDIF OUT
  • Form Factor
  • SLI
  • 4-way SLI
  • CrossFire


  1. All images and descriptions are for illustrative purposes only. Product specification, function, and appearance may vary based on different CPU and chipset. For detailed specifications, please consult the product specifications page.