ASUS Republic of Gamers Strix Z390-I LGA 1151 Mini-ITX Gaming Motherboard

ASUS Republic of Gamers Strix Z390-I LGA 1151 Mini-ITX Gaming Motherboard
Key Features
  • Mini-ITX Form Factor
  • Intel Z390 Chipset
  • LGA 1151 Socket
  • 2 x Dual-Channel DDR4-4500 (OC)
Powered exclusively by 8th and 9th Generation Intel Core, Pentium Gold, and Celeron processors, the Republic of Gamers Strix Z390-I LGA 1151 Mini-ITX Gaming Motherboard from ASUS delivers amped power in a small package. Its heatsink design handles Intel processors, so your battle station stays cool when the game heats up. With a dual-capacity DRAM setup, one-click optimization, and an arsenal of ROG software, the ROG Strix Z390-I is a compact gaming powerhouse. This motherboard will fit in mini-ITX sized cases, supports the LGA 1151 socket, the Intel Z390 chipset, and is compatible with Windows 10 (64-bit).
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ASUS Strix Z390 Overview

  • 1Description
  • 2General Features
  • 3Hardware Specs for Gaming and More
  • 4Design, Customization, and Setup
  • 5Tune Your Rig the Way You Want
  • 6Armoury Crate & More
  • 7The Power of Intel

Powered exclusively by 8th and 9th Generation Intel Core, Pentium Gold, and Celeron processors, the Republic of Gamers Strix Z390-I LGA 1151 Mini-ITX Gaming Motherboard from ASUS delivers amped power in a small package. Its heatsink design handles Intel processors, so your battle station stays cool when the game heats up. With a dual-capacity DRAM setup, one-click optimization, and an arsenal of ROG software, the ROG Strix Z390-I is a compact gaming powerhouse. This motherboard will fit in mini-ITX sized cases, supports the LGA 1151 socket, the Intel Z390 chipset, and is compatible with Windows 10 (64-bit).

The mini-ITX form factor of the ROG Strix Z390-I can support up to 64GB of DDR4 RAM over two dual-channel slots, or 32GB per slot at speeds of 4500 (OC), 4400 (OC), 4333 (OC), 4266 (OC) 4133 (OC), 4000 (OC), 3866 (OC), 3733 (OC), 3600 (OC), 3466 (OC), 3400 (OC), 3333 (OC), 3300 (OC), 3200 (OC), 3000 (OC), 2800 (OC), 2666, 2400, and 2133 MHz non-ECC unbuffered memory. For storage, there are four SATA III 6 Gb/s ports and two M.2 Socket 3 with M key, both of which support type 2242, 2260, and 2280 PCIe 3.0 x4 and SATA SSDs. The ROG Strix Z390-I supports Intel Optane Memory and allows its storage to be configured as RAID 0, 1, 5, and 10.

There are also two USB 3.1 Gen 2 Type-A ports (rear panel), two USB 3.1 Gen 1 Type-A ports (rear panel), one USB 3.1 Gen 1 Type-C port, two USB 2.0 Type-A ports, one USB 3.1 Gen 2 connector (front panel), and more internal USB headers that support USB 3.1 Gen 1 and USB 2.0. For those looking to expand their system using PCIe, there is one PCIe 3.0/2.0 x16 slot.

For delivering sharp, clear graphics, this motherboard supports Intel HD Graphics with one HDMI 2.0a output and one DisplayPort 1.2 output. The DisplayPort supports a maximum resolution of 4096 x 2304 @ 60 Hz, while the HDMI port supports a maximum resolution of 4096 x 2160 @ 60 Hz or 3840 x 2160 @ 30 Hz. The integrated graphics chipset supports up to three simultaneous displays.

Using the ROG SupremeFX S1220 8-channel HD audio codec, the ROG Strix Z390-I can support audio with higher fidelity than standard controllers. Audio can also be output using the integrated five 3.5mm audio outputs or S/PDIF output. This motherboard is also equipped with features such as OptiMem II, SupremeFX Shielding, Sonic Radar III, Sonic Studio III, RAMCache III, Fan Xpert 4, Intel Gigabit Ethernet, Wi-Fi 5 (802.11ac), Bluetooth 5.0, and more. This motherboard is protected by a limited 3-year warranty.

General Features

Hardware Specs for Gaming and More

With comprehensive cooling options and upgraded power delivery to fuel CPUs with more cores, plus support for faster memory and storage, the ROG Strix Z390-I Gaming provides exceptional performance in a compact, minimalist form factor that's perfect for minimalist battle stations.

Power Design

Digital power control together with an efficient thermal solution help ensure the ROG Strix Z390-I Gaming has the muscle to control Intel CPUs.

ProCool Power Connector
Compared with traditional power inputs, ProCool sockets are built to tight specifications to ensure flush contact with the PSU power lines. The lower impedance helps to prevent hotspots and connector failures.

Digi+ Power Control
The Digi+ voltage-regulator module (VRM) helps ensure smooth, clean power delivery to the CPU.

Driver & MOSFET (DrMOS)
The ROG Strix Z390-I Gaming's CPU VRM utilizes DrMOS power stages that combine high-side and low-side MOSFETs and drivers into a single package, delivering the power and efficiency that Intel's latest processors demand.

Choke (Thermal Solution)
The Strix Z390-I Gaming uses high-quality thermal pads to help transfer heat from the inductor and phase array to a heatsink that has ample surface area to deal with the power demands of Coffee Lake processors.

Capacitor (High-Quality Choke and Caps)
Chokes and durable capacitors are engineered to resist extreme temperatures and provide improved performance.


The ROG Strix Z390 Gaming series features the comprehensive cooling options, configurable via Fan Xpert 4 or the UEFI BIOS.

AIO Pump Fan Header
A dedicated PWM/DC header for self-contained water cooling setups.

A dedicated pair of PWM/DC fan headers for CPU coolers.

M.2 Double-Decker Heatsink
A double-decker design separates the primary M.2 SSD slot's heat spreader from the PCH heatsink. Both are isolated to prevent the PCH and M.2 thermals from affecting each other. This arrangement maximizes space on the mini-ITX board and also cools the M.2 SSD by up to 59°F / 15°C.

VRM Heatsink & Thermal Pad
An integrated I/O shield and VRM heatsink utilize almost one third of the Strix Z390-I mini-ITX board to deliver an effective cooling system. This industry-first layout employs transfers heat from the CPU power supply to the heatsink, helping to keep temperatures under control even in a cramped mini-ITX chassis.

Memory & Storage

DDR4 OC 4266 MHz+
To provide Intel's CPUs with unfettered access to memory bandwidth, ASUS reimagined motherboard trace routing from the ground up. Their OptiMem II tech carefully maps memory signal pathways across different PCB layers to reduce vias and also adds shielding zones that significantly reduce crosstalk. And to further enhance overclocking headroom for fully stacked memory configurations, they've employed a highly customized T-Topology layout that delivers time-aligned signaling.

Double Capacity DIMM Support
The ROG Strix Z390-I Gaming features a unique memory-trace design that supports up to 32GB per channel for a total memory capacity of 64GB. With double-capacity UDIMM modules, the ROG Strix Z390-I Gaming delivers four-DIMM memory bandwidth in a compact, dual-DIMM design.

Dual PCIe Gen3 M.2
Dual PCIe 3.0 x4 M.2 slots provide NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with up to two PCIe 3.0 storage devices via the dual M.2 slots to enjoy fast data transfer speeds on the Intel Core platform.


Integrated Wi-Fi Support
The ROG Strix Z390-I Gaming features Intel 802.11ac Wi-Fi with 2x2 MU-MIMO and wide 160 MHz channels, for wireless speeds of up to 1.73 Gb/s. In fact, its integrated Wireless-AC 9560 Wi-Fi adapter pushes wireless data faster so you'll get fast, smooth transfers, even when your rig is further away from the router. Intel Wireless-AC 9560 also offers Bluetooth 5.0 for connections that are faster with a greater range.

Intel Gigabit Ethernet
The ROG Strix Z390-I Gaming features Intel Ethernet (I219-V), ensuring data exchanges with your network and the outside world are fast and smooth. Intel LAN reduces CPU overhead and increases TCP and UDP throughput, keeping more processing power.

Featuring advanced signal coupling technology and high-tolerance components, LANGuard provides consistent Ethernet performance and greater protection against static electricity and power surges.


Immerse yourself in sound with SupremeFX audio technology. Utilizing the S1220A codec, SupremeFX is the integrated audio solution that's engineered to provide a flat frequency response for a neutral, detailed sound signature. And to ensure that its signature is preserved, the front panel output is driven with dual op amps, delivering sonics with the scale and authority to create virtual worlds via your gaming headset.

Audio Line Shielding
Blocks electromagnetic interference from the motherboard or add-ons to provide cleaner output.

Dual Op Amplifiers
With two op-amps onboard, you're able to pump solid audio to your favorite cans, with 32-600 Ohms headphone impedance for great flexibility.

Nichicon Audio Capacitors
Japanese-made audio components produce a warmer, more natural sound with great clarity and fidelity.

Design, Customization, and Setup

A host of design touches, including a cyber-text pattern, plus customization options, comprehensive validation lists, and a diverse ecosystem of components make building and personalizing a gaming rig with the ROG Strix Z390-I Gaming very user-friendly.

ID Design

The distinctive sleek cuts across the ROG Strix heatsink are now accented with a cyber-text pattern, fusing multiple gaming cultures to create a unique identity for this generation.

Aura Sync

Outshine the Competition
ROG Strix motherboards deliver performance and aesthetics to outshine the competition. ASUS Aura offers full RGB lighting control with a variety of functional presets for the built-in RGB LEDs, as well as strips connected to the onboard RGB header, and it can all be synced with an ever-growing portfolio of Aura-capable ASUS hardware.

The ASUS Aura ecosystem is in the ascendancy, with an extensive and growing list of ASUS products now offering Aura Sync compatibility - along with loads of compatible accessories and kits available through partners. Your ROG Strix motherboard's built-in Aura RGB lighting easily syncs with PC cases, memory modules, coolers, and RGB LED strips from a broad selection of well-known manufacturers. ASUS Aura software provides simple and intuitive lighting management

DIY Friendly Design

Pre-Mounted I/O Shield
ROG's I/O shield is finished in a matte black and comes pre-mounted to make it easy to install the motherboard.

Provides greater PCIe device retention and shearing resistance.

ESD Guards
ESD Guards provide greater electrostatic protection than the industry standard. They cover the USB, audio, and LAN ports.

One clip to swap or secure your graphics card.

One-sided clips for the user-friendly and secure handling of memory modules.

Onboard LEDs to indicate the power status, as well as problems with the CPU, memory, graphics card, or boot device for quick diagnosis.

MemOK II automatically fixes boot failures that arise due to memory overclocking and instability.

Certified Compatibility

Having the freedom to pick and choose the parts that go into your machine is at the heart of PC DIY. That's why ROG Strix undergoes an extensive certification program focused on providing compatibility with a wide range of components and devices. Their extensive list of guaranteed-compatible components is an invaluable aid to building a ROG Strix gaming rig. It specifies thousands of compatible parts, and it includes a dedicated Qualified Vendor List (QVL) for memory, so you can build fuss-free.

ROG Strix Ecosystem

Gear up with ROG Strix components, from graphics and sound cards, to mice and keyboards, and up your game with complementary aesthetics, control, and compatibility.

Tune Your Rig the Way You Want

Whether it's overclocking, cooling, assigning network priorities, or tuning audio characteristics, the ROG Strix Z390-I Gaming has the firmware options and software utilities to tailor your rig's performance for any type of gaming environment.

AI Overclocking

ASUS AI Overclocking makes automatic tuning faster and smarter. Available in Windows or directly through the UEFI, it profiles the CPU and cooling to predict the optimal configuration for each individual system.

CPU Potential
ASUS created a proprietary algorithm that evaluates the capabilities of your CPU.

Cooling Capability
The onboard intelligence also watches system vitals like temperatures, fan speeds, and power draw to gauge cooling performance.

AI Overclocking
Utilizes onboard intelligence to perform automated clocking and provides target frequency and voltage estimations for savvy veterans that prefer manual tuning.

5-Way Optimization

Take care of complex tuning with just one click. ASUS 5-Way Optimization is a system-wide tuning utility that overclocks the processor and tunes fan speeds to ensure an even balance between cooling and acoustics. The automated CPU tuning feature of 5-Way Optimization leverages the same onboard intelligence as AI Overclocking, but goes further by running a Prime95-based stress test to deliver a result that's well-tuned from the get-go.

TPU Insight
The TurboV Processing Unit (TPU) Insight provides AI Suite 3 with the intelligence needed to automatically fine-tune voltages, monitor system stats, and adjust overclocking.

EPU Guidance
The Energy Processing Unit (EPU) Guidance enables system-wide power efficiency, automatically optimizing consumption to maximize savings.

Fan Xpert 4
Enjoy comprehensive control over fans, water pumps, and all-in-one (AIO) coolers, via either Fan Expert 4 or ASUS' UEFI.

Digital Power Controls
The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, switching frequency and power-efficiency settings, allowing you to fine-tune CPU voltage regulation for stability and performance.

Turbo App
Intel's processors feature per-core tuning, and the ASUS Turbo app makes use of this feature by letting you assign applications to specific processor cores, prioritizing computing power where it's needed most.


The ROG UEFI (BIOS) provides everything you need to configure, tweak, and tune your rig. It offers intelligently simplified options for newcomers to PC DIY, as well as comprehensive features for seasoned veterans.

EZ Mode

Designed to simplify setup, EZ Mode presents all the vital settings and stats on a single page. With guided wizards, drag-and-drop functionality, and one-click application of important settings, your rig will be up and running in no time.

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.

Graphical Fan Controls
Fine-tune individual fans simply by dragging a curve with the mouse.

SATA Information
View SATA port details for device recognition.

Fast and Easy Clock Adjustment
Use mouse controls to change the time and date.

Aura On/Off Mode
Enable or disable Aura RGB lighting or every onboard LED for a more subdued aesthetic.

Advanced Mode

When you're ready for a deeper dive into the configuration of your system, delve into the UEFI's Advanced mode and take complete control. Each section is intuitively organized, and a built-in search feature makes it easy to find the options you need. Advanced functions are coded with the intelligence to adapt to your settings, and when you're ready to take charge, parameters have the granularity to dial in performance just the way you want.

AI OC monitors system vitals like temperatures, fan speeds, and power draw to estimate overclocking performance.

My Favorites
Quickly find tuning options and add preferred tools to the list.

EZ Flash 3
Update the BIOS via the internet, without leaving the BIOS interface.

AI OC Guide
The AI OC Guide allows you to enable the AI Optimization or view a quick guide.

Check your storage device's Self-Monitoring, Analysis, and Reporting Technology logs to gauge reliability and identify potential failures.

GPU Post
View recommendations for multi-VGA configurations and detailed information for select ASUS graphics cards.

Secure Erase
Restore your SSDs and NVMe storage to factory settings.

Last Modified Log
Track the last change and save preferred profiles to a USB drive.

SATA Port Renaming
Rename SATA ports for easy identification.

Search Function
Quickly and easily find the option or setting you're looking for.

ASUS User Profile
Save BIOS settings for migration to a new BIOS version or system.

Personalized Sound

Sonic Studio III
Sonic Studio supports HRTF-based (head-related transfer function) virtual surround for VR headsets, casting an aural landscape that draws you deeper into the action. The intuitive Sonic Studio interface also offers a range of EQ options and one-click presets, allowing you to tailor acoustics to suit personal preferences or the characteristics of your headset.

App-Specific Profiles
Apply customized audio settings to different applications, so everything you do is tuned to the way you want to listen.

Sonic Studio Link
Sonic Studio Link VR functionality extends its HRTF effects to headsets like the Oculus Rift and HTC Vive.

Surround Sound
Surround sound for an immersive audio experience. In Gaming Mode, in-game sound effects and music are adjusted automatically to increase the feeling of immersion, so audio pulls you further into the game. Movie Mode has Voice Clarity and Smart Volume sliders set high to emphasize dialog, so you'll hear whispers and experience minimum distortion and high volumes. Music Mode balances Voice Clarity, Bass Boost, and Treble Boost, so your music-listening experience feels like a live performance. Communication Mode accentuates soft sounds via Smart Volume for enhanced listening, while Voice Clarity boosts speech for clear conversations. If you're engaging in virtual reality, Sonic Studio Link applies Sonic Studio III effects to your VR headset to boost immersion in the virtual world. When multitasking, user-friendly routing assigns different audio streams to different outputs, such as browser effects to headphones and game audio to speakers.

Scan and Detect to Dominate

Sonic Radar III
Sonic Radar III has an evolved audio engine to process sounds more accurately, helping to ensure you're always aware of what's going on around you. It now also includes an onscreen arrow to help you pinpoint the enemy's position and the origin of key in-game sounds. Plus, the Audio Boost feature provides filters that let you hear faint sounds, so you can become the hunter, not the hunted.

Improved Audio Algorithm
The Sonic Radar III audio algorithm offers improved accuracy that helps you pinpoint the enemy.

3D Engine
Sonic Radar III is built around a HUD that includes an in-game 3D arrow for a more intuitive experience.

Audio Boost
Press hot keys to briefly increase bass, midrange, or treble frequencies for improved focus during different parts of your game.

Audio Radar
A visual cue to help ensure Sonic Radar III is effective, regardless of surrounding noise and chaos.

GameFirst V

GameFirst V is the ROG-exclusive tool that optimizes network traffic for faster, lag-free online gaming. Team your gateways, keeps tabs on bandwidth-hogging apps and make adjustments on the fly.

Smart/Auto Modes
Optimize network traffic for active apps, or allocate more bandwidth to games.

One-Click Prioritization
Speed network packets for specific applications, helping to reduce latency. With Extreme Mode on, speeds can reach 371.3 Mb/s. With Extreme Mode off, speeds can reach 16.03 Mb/s.

ROG First
Interface directly with a ROG router and automatically configure QoS to prioritize network bandwidth to games.

Network Insight
View real-time traffic by biggest hogs, app groups, and task types, or drill down for detailed connection information.


RAMCache turns milliseconds into microseconds to boost game-load times. Fully compatible with NVM Express storage options, its intelligent technology effectively caches an entire storage device so that favorite games and apps launch at fast speeds.

Armoury Crate & More

Armoury Crate

The Armoury Crate portal keeps you updated with the drivers and BIOS releases. Its user-friendly UI can be configured to show a variety of information, including security updates, bug patches, ROG news, gaming events, and special offers.


Overwolf is an unobtrusive overlay that lets you browse the internet, email, IM, and stream or record gameplay - all while you're in the game. Color-matched ROG skins that display your status as a member of an elite pack are also available for download from the Overwolf App Store.

Beyond VR Ready

ROG Strix Gaming is VR Ready, and beyond. The ASUS Beyond VR Ready marque means that ROG Strix Gaming has been tested with loads of components to ensure that your productivity, gaming, and entertainment needs are tuned for performance. ASUS Beyond VR Ready provides a way to configure and build your dream system with total confidence.

The Power of Intel

Intel Z390 Chipset

The Intel Z390 is a single-chipset design that supports Socket 1151 for 9th Gen and 8th Gen Intel Core, Pentium Gold, and Celeron processors. It provides improved performance by utilizing serial point-to-point links, allowing increased bandwidth and stability. Additionally, the chipset provides a maximum of six USB 3.1 Gen 2 ports, four USB 3.1 Gen 1 ports, and 32 Gb/s M.2 and PCIe 3.0 lane speed support for faster data retrieval. Intel Z390 also supports integrated-graphics, so you'll enjoy great graphics performance.

Ready for Socket 1151 for 9th / 8th Gen Intel Core, Pentium, Gold, and Celeron Processors

This motherboard supports Socket 1151 for 9th Gen and 8th Gen Intel Core, Pentium Gold, and Celeron processors, with integrated graphics, memory, and PCI Express controllers to support onboard graphics output with dedicated chipsets, dual-channel (4-DIMM) DDR4 memory, and 16 PCI Express 3.0/2.0 lanes for great performance.

ASUS Strix Z390 Specs

ChipsetIntel Z390
CPU SocketLGA 1151
Back Panel I/O
USB2 x USB 3.1 / USB 3.2 Gen 2 Type-A
2 x USB 3.1 / USB 3.2 Gen 1 Type-A
1 x USB 3.1 / USB 3.2 Gen 1 Type-C
2 x USB 2.0 Type-A
Display1 x DisplayPort 1.2
1 x HDMI 2.0a
Audio5 x 3.5 mm
1 x S/PDIF
Ethernet / Controller1 x Intel I219V Gigabit
Wi-Fi Antenna2 x Connector
Memory Slots2 x 288-Pin
Memory SupportDDR4 2133, 2400, 2666, 2800, 3000, 3200, 3300, 3333, 3400, 3466, 3600, 3733, 3866, 4000, 4133, 4266, 4333, 4400, 4500 MHz
Maximum Capacity64 GB
Channel ArchitectureDual Channel
ECC SupportNon-ECC Unbuffered
Storage Expansion
M.22 x M Key 2242, 2260, 2280 (PCIe 3.0 x4, SATA III)
Optane Memory SupportYes
RAID SupportRAID 0, 1, 5, 10
Internal I/O
Expansion Slots1 x PCIe 3.0 x16
USB1 x USB 3.1 / USB 3.2 Gen 1 Header (Supports 2 USB Type-A Port)
1 x USB 2.0 Header (Supports 2 USB Type-A Port)
Multi-GPU SupportNone
Air Cooling1 x 4-Pin CPU
1 x 4-Pin System
1 x Thermal Sensor
Liquid Cooling1 x 4-Pin Pump
Power Connectors1 x 24-Pin Mainboard
1 x 8-Pin CPU
SecurityChassis Intrusion
LED Header2 x RGB
Audio1 x Speaker
DiagnosticsClear CMOS
ROM128 Mb
Front Panel I/O
I/O Connection HeadersAAFP, USB 3.1 / USB 3.2 Gen 1
Audio CodecSupremeFX S1220A (8-Channel)
Wi-FiWi-Fi 5 (802.11ac) (MU-MIMO)
Supported Operating SystemsWindows 10 (64-Bit)
Form FactorMini-ITX
Dimensions6.7 x 6.7" / 17.02 x 17.02 cm
Packaging Info
Package Weight2.8 lb
Box Dimensions (LxWxH)9 x 9 x 7"
See any errors on this page? Let us know


Am I able to put it in a larger case even if it ...

Am I able to put it in a larger case even if it is for a mini ATX case?
Asked by: Miguel
This depends entirely on the case.
Answered by: Michael
Date published: 2020-10-01

What’s a good Bluetooth keyboard and mouse that ...

What’s a good Bluetooth keyboard and mouse that will work with the internal Bluetooth?
Asked by: Robert
There are many options available, in order to make the best recommendation for your specific use case, please reach out to [email protected]
Answered by: Miguel
Date published: 2020-09-11

Can I update the BIOS to run 64GB RAM using ...

Can I update the BIOS to run 64GB RAM using 2x32GB RAM installed or do I need to use smaller RAM for the update first?
Asked by: Robert
It supports 64GB so you shouldnt have any issued.
Answered by: gundeep
Date published: 2020-08-03

Could I put an M.2 NVMe SSD in the board? I saw ...

Could I put an M.2 NVMe SSD in the board? I saw it has a PCiE 3 x4 slot.
Asked by: Nicholas
Yes, the motherboard already supports 2 NVMe slot.
Answered by: JEFF
Date published: 2020-04-21


Asked by: Daniel
No, this motherboard would not have Thunderbolt on it
Answered by: Moe
Date published: 2019-08-02

This item can returnable ?

This item can returnable ?
Asked by: Ananth
This item can be returned within 30 days of purchase date for a refund or exchange
Answered by: Michele
Date published: 2019-11-06

Can i add a thunderbolt card to it?

Can i add a thunderbolt card to it?
Asked by: Daniel
No, you can't.
Answered by: ASUS Answers
Date published: 2019-07-26

Is the motherboard new?

Is the motherboard new?
Asked by: edgar
This is sold as brand new. However, it's for the 9th generation intel cpu. The 10 th generation uses a z490
Answered by: karl
Date published: 2020-07-10
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