ROG Strix Helios II
GeForce RTX 50 Ready

ROG Strix Helios II

ROG Strix Helios II EATX mid-tower gaming case with dual tempered glass side panels, GPU support for up to 450mm in length, aluminum frame and front panel, GPU braces and 420mm radiator support

  • Premium design: The Helios II is made for showcase builds, with aluminum front panel featuring diamond-grille design and 3D-structured filter to support effective cooling 
  • Optimal thermal performance:  Pre-installed four 140 x 28mm performance fans deliver ultimate airflow 
  • Ready for the DIY experience: PC building is made easy with support for EATX motherboards and graphics cards up to 450mm long, plus a graphics card slot clamp and a rear detachable PSU bracket  
  • Tidy PC building: Effortless cable management is enabled by a multifunction cover with graphics card holders, a PSU shroud, a cable cover and rear cable clips 
  • Advanced I/O panel: This section features two USB 20Gbps Type-C® ports, four USB-A 3.0 ports, an ARGB-lighting control button and a fan-speed PWM control button 
  • Comfortable case straps: Easily carry your prized build to LAN parties with ergonomic and stylish X-shaped woven straps 
Sleek black and white Helios II PCs with geometric patterns on a neon-lit floor, set against a cosmic, red backdrop.

ROG Strix Helios II

Striking Looks. Cool Moves.

ROG Strix Helios II is a premium mid-tower gaming case featuring dual tempered glass side panels, a refined aluminum frame, and a diamond grille front panel with a 3D-structured front filter. It comes pre-installed with four 140 x 28 mm performance fans, delivering optimized airflow and enhanced thermal performance for demanding gaming setups. Engineered for expandability and performance, it's ready for motherboards ranging from ITX to EATX and serious water-cooling setups as well - making it the perfect choice for a classic ROG showcase build.

Premium Design & Aesthetics

ROG Strix Helios II is made for showcase builds with dual 4mm-thick tempered glass side panels fitted in a refined brushed-aluminum frame. The aluminum front panel, featuring a diamond grille design, is manufactured using high-precision CNC milling technology and an anodizing process. The diagonal slashes on the front are inspired by race car elegance and individuality to make the Helios II unique. With rounded edges, a streamlined shape and hidden seams, this chassis is sleeker than ever.

Helios II front view with front panel highlighted

Diamond Grille Design

Four Pre-Installed Performance Fans

The Helios II is designed to balance performance and acoustics: Four pre-installed 140mm fans with 28mm frames deliver strong airflow while maintaining a low 29 dB(A) noise level.

  • 103 CFM

    Airflow

  • 2.3 mmH2O

    Static Pressure

  • 29 dB(A)

    Noise Level

Ready For High-Performance Builds With Dual AIO Support

The ROG Strix Helios II is built to perform and primed for expansion, with ample space for GeForce RTX™ 5090 graphics cards or hardcore water-cooling setups. It can handle a ROG Ryuo IV SLC 360 ARGB AIO cooler and the 360mm radiator of the ROG Astral LC GeForce RTX 5090 at the same time. It features support for radiators up to 420mm in the front and 360mm at the top, with room reserved for installing the pump and reservoir of a custom loop.

Helios II build indicating maximum graphics card length

Horizontal Installation

Helios II build indicating maximum graphics card width

Vertical Installation

Side view of Helios II with fan compatibility indicators
Side view of Helios II with radiator compatibility indicators

Easy Installation & Maintenance

ROG Strix Helios II is designed with multiple mechanisms to provide the smoothest building experience, even for DIY novices. Meanwhile, keeping your rig clean is made easy with built-in dust filters and easy access to all areas.

Tool-Free Side Panel Design

Pushing a button at the rear of the case releases one of the side panels for tool-less access to the interior. Its tempered glass is hinged on the bottom to swing away and rest at an angle, or you can remove the panel completely and set it aside while you tinker. 

fan & radiator brackets and three fans side by side

Modular Fan & Radiator Mounts

Two removable brackets let you easily mount fans and radiators before installing the whole assembly into the case, simplifying your building experience.

Patented Graphics Card Slot Clamp

A tool-free graphics card slot clamp makes your PC building faster and hassle-free with a simple snap that secures your GPU firmly in place.

Graphic depicting a detachable PSU bracket on the rear of the Helios II

Rear Detachable PSU Bracket

For easier installation, a rear bracket detaches from the case so that a power supply can slide right in.

Dust Filters

The 3D-structured front filter provides ample space for the front fans while providing optimized airflow and acoustics. It combines forces with removable filters on the top and underside to provide all-round protection from dust, making cleaning and maintenance easier.

Effortless Cable Management

Keep your build sharp and tidy with flexible covers and a comprehensive cable management system. A cable grommet channel features velcro to let you neatly organize two sets of cables.

A multifunction cover with graphics card braces cleverly hides cabling while providing sturdy support to graphics cards. Its position can be adjusted to accommodate an ATX or EATX motherboard.

The movable two-piece PSU shroud has a front cut-out to enable compatibility with the OLED panels of ROG Thor or other power supplies.

Helios II highlights the PSU shroud with ROG Thor III installed.
Angled front view with PSU shroud highlighted

A cable cover conceals unsightly wiring, resulting in a clean and organized build. In addition, the Helios II provides versatile cable management with a cable grommet bar featuring three large straps for two sets of cables.

Rear cable clips help ensure clean cable management.

rear angled view of Helios with cable clips highlighted

Front I/O Panel

20Gbps

USB Type-C®

60 Watt

fast charging

The Helios II includes two USB 20Gbps Type-C ports with support for 60-watt fast charging where compatible.

Helios II front I/O panel

  • 1ARGB Lighting Control

    This LED-lit button toggles an integrated ARGB controller that supports Aura Sync lighting, enabling vast customization of colors and effects

  • 220Gbps USB Type-C®

    The Helios II includes two USB 20Gbps Type-C ports with support for 60-watt fast charging where compatible.

  • 3Premium Fan Speed Control

    PWM controls fan speeds automatically, making it easy to switch between light and heavy airflow as needed.

Ergonomic Case Straps

Easily carry your prized build to LAN parties with ergonomically X shape woven fabric straps that combine style and comfort, rigorously tested to support up to 50kg for reliable transport.

Helios II White angled top view showing straps

ROG Element

The front panel, Velcro straps and drive cage all feature the distinctive ROG logo, communicating futuristic luxury and elegance.

  • Front Panel

    Helios II front panel with logo highlighted
    Embossed Emblem

    Signature details, majestic proportions and a sense of elegant power converge on a gleaming aluminum ROG logo that stands proud amid diamond-shaped grilles - a nexus of inspiration for all.

  • Velcro Straps

    four velcro straps angel view

  • HDD Cage

    HDD cage angel view

CUSTOMER REVIEWS

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Disclaimer

  • Products certified by the Federal Communications Commission and Industry Canada will be distributed in the United States and Canada. Please visit the ASUS USA and ASUS Canada websites for information about locally available products.
  • All specifications are subject to change without notice. Please check with your supplier for exact offers. Products may not be available in all markets.
  • Specifications and features vary by model, and all images are illustrative. Please refer to specification pages for full details.
  • PCB color and bundled software versions are subject to change without notice.
  • Brand and product names mentioned are trademarks of their respective companies.
  • Unless otherwise stated, all performance claims are based on theoretical performance. Actual figures may vary in real-world situations.
  • The actual transfer speed of USB 3.0, 3.1, 3.2, and/or Type-C will vary depending on many factors including the processing speed of the host device, file attributes and other factors related to system configuration and your operating environment.