ASUS PRIME Z270-AR LGA1151 DDR4 HDMI M.2 USB 3.1 Z270 ATX Motherboard

ASUS Prime is the next evolution of the ASUS motherboard, born of a pedigree that stretches back to 1989. Our team of world-class engineers are passionate about empowering everyone to enjoy the benefits of customization and tuning, and the driving force behind the development of Prime is to make advanced enthusiast controls easily accessible — maximizing performance, stability and compatibility for the very best DIY PC experiences. Simply stated: it's time for Prime.
Power At Your Fingertips
One-click Overclock and Cooling
Get performance, efficiency, digital power, fan control and even networking and audio tuning tailored for you

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

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.
Stutter is eliminated for smooth-running apps, even under heavy loading.
Energy waste is reduced so you'll save money.
Overclock CPU

Testing configuration:
Intel® LGA 1151 i7-7700K | PRIME Z270-A | Corsair DDR4 3200 4G*4 | Corsair H110i | Windows 10
CPU performance boost Energy Efficient Design Advanced fan controls Precise Digital Power Control Game faster, rank higher
Flexible cooling controls for air and liquid

*ASUS GT 700 or later graphics card

Fan Xpert 4
ASUS Prime Z270-AR features the most comprehensive fan controls ever, configurable via Fan Xpert 4 and UEFI BIOS.

Multiple temperature sources
Each header monitors and reacts to three thermal sensors that can now also sense temperature on ASUS graphics cards*.

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

4-pin PWM/DC fan
Every onboard header supports auto-detection of PWM or DC fans.

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

Smart protection
A dedicated integrated circuit protects each fan header from over-temperature and overcurrent.

Fan Extension Header
NEXT
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 all fan parameters 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.

BACK
OC Design – ASUS PRO Clock Technology
A dedicated base-clock generator designed for 7th Generation Intel® processors allows overclocked base clock frequencies up to or beyond 425MHz*. This custom solution works in tandem with the ASUS TurboV processing unit to enhance voltage and base-clock overclocking control — providing an exciting new way to boost performance to extreme heights.
Advantages of Pro Clock
Reduced boot time
Lower jitter under extreme conditions for overclocks
Increased stability under heavy overclocking

*BCLK overclocking range will vary according to CPU capabilities, cooling, motherboard support and tuning options. Ranges up to 650MHz are possible under select conditions.
Testing configuration:
Intel® LGA 1151 i7-7700K | PRIME Z270-A | Corsair DDR4 3200 4G*4 | Corsair H110i | Windows 10
DDR4 Overclocking Strength in Numbers
Third-generation ASUS T-Topology allows memory frequencies that are higher than ever — to 3866MHz and beyond. Refined manufacturing ensures ultra-consistent quality and minimal crosstalk between custom trace paths, so you'll enjoy the thrill of overclocking DDR4 with time-aligned signaling for superior stability and compatibility.

Hardware Upgrade Zone
SLI HB bridge (2-WAY-M)
The new ASUS SLI HB bridge doubles the available transfer bandwidth to provide silky-smooth surround gaming. Compatible with NVIDIA® Titan X, GeForce GTX 1080 and GeForce GTX 1070 graphics cards, SLI HB bridge is your fast track to gaming greatness.

Native M.2/NVMe PCIe RAID Support for
Lightning Fast Storage Speed
Not satisfied with single-storage device read/write speeds? Then join the fast lane and build a RAID 0 array using two PCIe storage drives to enjoy data transfers at lightning speeds!
M.2+M.2

M.2+PCIe

PCIe
+
U.2 via Hyper Kit*
*Purchase separately
Connect with Unparalleled Speeds

Intel Optane Memory Ready
Intel® Optane™ Memory* is a revolutionary (non-volatile memory) technology supported by Prime 200-series motherboards. Intel Optane Memory modules accelerate attached storage to reduce boot and load times, so everything feels faster and more responsive.
*Supports 7th Generation Intel® processors. Requires driver and BIOS update.


Speed Up with Onboard M.2 Up to 32Gb/s
With x4 PCI Express 3.0/2.0 bandwidth, M.2 supports up to 32Gb/s 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.

10Gb/s USB 3.1 Onboard
With backward-compatible USB 3.1 Type-A and reversible USB 3.1 Type-C ports, you'll experience ultimate connection flexibility and blazing data-transfer speeds of up to 10Gb/s (twice as fast as standard USB 3.0).

ThunderboltEX 3 for Blistering Speeds and USB-C Connectivity
Prime Z270-AR supports the ThunderboltEX 3 card for breathtaking bi-directional Thunderbolt™ 3 transfer speeds of up to 40Gbps, 4x USB speeds, 2x video bandwidth; and for reversible USB 3.1 Type-C compatibility as well as high-powered 36W charging!
>>Learn More

*Available to purchase separately.
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, EZ and Advanced modes help you find your way, quickly and easily.

EZ Flash 3
Flash the latest BIOS through internet under BIOS.

S.M.A.R.T
Check your storage device Self-Monitoring, Analysis, and Reporting Technology logs to gauge reliability and determine potential failures.

EZ Tuning Wizard
Select your hardware and apply different scenarios to tune system performance, or streamline your RAID configuration for faster data retrieval and backups!

My Favorite
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 DRAM performance with a click.
SATA information
Easily display SATA port details for device identification.
Fast clock adjustment
Use mouse controls to quickly change time and date settings.
Advanced mode
GPU POST
See recommendations for multi-VGA configuration and detailed information for selected ASUS graphics cards.
Secure erase
Restore 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 Sync and Audio Enhancement

Outshine The Competition
ASUS Aura Sync technology for distinctive lighting effects
Aura Sync takes RGB lighting beyond the checkbox, combining and controlling the LEDs of your Aura-enabled products from a single application — so you can achieve perfect, synchronized lighting harmony. Aura lets you sync light effects across your graphics card, Prime Z270-AR motherboard, and an ever-growing portfolio of Aura-enabled products.
Learn more about Aura Sync >
Note: Synchronization between ASUS motherboard, graphics card and peripherals is enabled and controlled by ASUS Aura-ready motherboards. Visit the support page for your Aura-enabled motherboard and download Aura software by clicking Driver & Tools > Utilities.

Brighten Up Your Build
ASUS Aura lighting control
A well-tuned system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for 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 Sync-capable ASUS hardware.


Exclusive Audio Features
Realtek codec and unique design features for pristine, powerful audio
ASUS Prime Z270-AR utilizes a unique audio codec designed in close collaboration with Realtek — the Realtek S1220A. It also features an unprecedented 120dB signal-to-noise ratio for the stereo line-out and a 113dB SNR for the line-in, providing pristine audio quality. Additionally, a new impedance-sensing circuit automatically adjusts gain to ensure the optimal volume range for your headphones.
Flawless Audio That Makes You Part of The Game
Crystal Sound 3

Clean Power
Power pre-regulator
Reduces power-input noise to ensure consistent performance.
Noise isolation
Audio shielding
Ensures precision analog/digital separation and greatly reduced multi-lateral interference.

Separate layer for left and right tracks
Ensures both channels deliver consistent, equal quality.
Audio Enjoyment
Audio amplifier
Internal audio amplifier produces robust, high-quality sound for headphones and speakers.

De-pop circuit
Reduces start-up popping noise to all audio outputs.

Audio capacitors made in Japan
Premium parts provide warm and immersive sound with exceptional clarity and fidelity.

Surround Sound to Go
DTS Headphone:XTM
Immersive 3D surround-sound technology provides incredibly rich audio experiences.

Intel Ethernet
More throughput, less CPU usage and great gaming experiences
Prime Z270-AR features the very latest Intel® Ethernet for faster, smoother gaming. 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!
Turbo LAN
Network-optimization software for customizable packet prioritization
Turbo LAN with cFosSpeed traffic-shaping technology adds even more lag-reducing support and an 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.
Real-time speed monitor Grouping your own favorite list Set priority to speed up for your application
Reliable Stability and Compatibility
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 to integrate the slot with fortifying metal support for an inherently stronger design, the SafeSlot is then firmly anchored to the PCB through additional solder points.

Built to Last
ASUS is the world's foremost motherboard manufacturer, renowned for our unique Design Thinking approach. Our exhaustive testing exceeds industry standards, supported by high-quality components for exceptional real-world protection. Our motherboards are proven to be compatible with more than 1,000 components and devices, and each new model undergoes a minimum of 8,000 hours of strict validation. ASUS gives you the peace of mind of knowing that your motherboard is fit for all environments and applications. By choosing ASUS, you also gain the freedom to select outstanding component options, for trouble-free DIY experiences.
5X
Protection III
Hardware safeguards to ensure long-term durability.

520+
DDR4 Compatibility
Industry-leading DDR4 memory compatibility for best flexibility and reassurance.

1000+
Compatible Devices
Compatibility with a range of CPUs, memory modules, graphics cards and more.

8000+
Validation Hours
Extensive testing with latest components for enhanced reliability, compatibility and safety.

Learn More
Make It Your Own

Cable cover
Cover your cables for a tidier PC.

Custom nameplate
Personalize your build with a custom logo making it unique to you.

M.2 fan holder
The ASUS 3D-printed M.2 fan holder keeps temperatures low for improved performance and longevity.

3D Printing Friendly
Make it your own
ASUS is the first motherboard manufacturer to support 3D printing, making it easy to customize your motherboard's appearance and improve system performance with a range of printable parts.

Exclusive 3D mount for easy installation

Dedicated 3D mounts on the motherboard makes fitting 3D-printed parts easy. Using the same screws as M.2 drives and standard motherboard mounting holes, you can easily add nameplates, cable covers, or an M.2 fan holder in a matter of moments.
*Products with the 3D Printing Friendly logo feature the specialized 3D mount and are also bundled with an extra 3D mount kit.
3D-printable accessories
As system parts are visible in custom PC builds, make yours stand out from the competition with 3D-printed accessories.

2-Way SLI HB bridge cover
Clip the cover onto the PCB SLI HB bridge to add style to your build. Multiple form factors — eATX, ATX and mATX — are available.