The ASUS ROG Strix Helios II is a premium mid-tower gaming case designed for high-performance buil...The ASUS ROG Strix Helios II is a premium mid-tower gaming case designed for high-performance builds, combining exceptional style with advanced functionality. It features dual 4mm-thick tempered glass side panels set within a refined brushed-aluminum frame and a unique diamond grille front panel. This case prioritizes optimal airflow with four pre-installed 140mm performance fans, ensuring excellent thermal management for demanding components and overclocking. The interior is engineered for extensive expandability, supporting motherboards from ITX to EATX, large graphics cards like the GeForce RTX™ 5090, and complex water-cooling setups with radiators up to 420mm. Building and maintenance are simplified through tool-free side panel access, modular fan mounts, a patented graphics card slot clamp, and a detachable PSU bracket. Integrated ARGB lighting, controlled via Aura Sync, allows for extensive customization, while ergonomic X-shaped straps make transport to LAN parties easy. The case also includes convenient features like two USB 20Gbps Type-C ports with 60W fast charging support and a comprehensive cable management system for a clean, professional look.
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The ASUS ROG Strix Helios II is a premium white mid-tower gaming case designed for enthusiasts seeking a blend of striking aesthetics and high-performance functionality. Its standout feature is the dual tempered glass panels and brushed aluminum frame, offering a sophisticated look that showcases your build. While it excels in thermal management and expandability for demanding components and custom loops, its larger size may require significant desk space.
All features
Colour
White
Model Part Number
90DC00W3-B39000
Brand
ASUS
Extended Product Information
FAQs
What motherboard sizes does the ROG Strix Helios II support?
The case supports a wide range of motherboard sizes, including Mini-ITX, micro ATX, ATX, and EATX.
Can I install a large graphics card like the RTX 4090?
Yes, the case supports graphics cards up to 450mm in length, which is sufficient for most high-end cards including the RTX 4090.
How many fans come pre-installed?
The case comes with four pre-installed 140mm fans: three at the front and one at the rear.
What is the maximum radiator size supported?
The front supports radiators up to 420mm, the top supports up to 360mm, and the rear supports up to 140mm.
Does the case include a power supply?
No, the power supply is not included. You will need to purchase a compatible ATX power supply separately.
How is the cable management system designed?
It features a comprehensive system with flexible covers, a dedicated channel with Velcro straps, and grommets to help keep your build tidy and improve airflow.
Can I control the RGB lighting?
Yes, the case has integrated ARGB lighting that can be controlled via Aura Sync using the dedicated button on the front I/O panel.
What are the dimensions of the case?
The case measures 250 mm in width, 565 mm in depth, and 591 mm in height.
Troubleshooting
Computer does not power on
Ensure the power supply is properly connected to the motherboard and the wall outlet. Check the front panel power switch connection to the motherboard header.
Overheating components
Verify all pre-installed fans are running. Ensure dust filters are clean. Check that radiators are correctly installed with fans pushing/pulling air effectively. Consider adding more fans or upgrading cooling solutions.
Front USB Type-C ports not working or charging slowly
Confirm the USB 3.2 Gen 2 (3.1 Gen 2) Type-C header is correctly connected to the motherboard. Ensure the motherboard supports the required USB specifications. For fast charging, verify the connected device and power adapter are compatible with 60W charging.
ARGB lighting not functioning
Ensure the ARGB controller is powered and connected correctly to the motherboard's ARGB header (if applicable). Press the RGB control button to cycle through effects. Check ASUS Aura Sync software for configuration if connected via USB.
Side panels are difficult to remove/reinstall
Ensure you are using the correct method: push the button at the rear to release the panel. If it's stiff, check for obstructions or misalignments and gently guide the panel.
Pros and Cons
Pros
Exceptional build quality with premium materials like aluminum and tempered glass.
Superior cooling performance out-of-the-box with multiple pre-installed fans.
Ample space for large, high-end components and complex custom water-cooling.
User-friendly design with tool-free access and modular components for easier building.
Stylish aesthetics with ARGB lighting and a refined design, perfect for showcase builds.
Convenient high-speed USB Type-C ports with fast charging support.
Cons
The case is quite large and heavy (18 kg), requiring significant desk space and potentially challenging for frequent moves.
Premium features may come at a higher price point compared to standard cases.
The diamond grille front panel, while stylish, might slightly restrict airflow compared to an open mesh design if not properly managed.
While tool-free, some larger components might still require careful installation due to the case's size and internal layout.
White color may show dust and smudges more easily, requiring regular cleaning.
Limited options for vertical GPU mounting without additional accessories.
Setup, Compatibility & Care
Setup:
Prepare your workspace: Ensure you have ample space and necessary tools (screwdrivers, zip ties, anti-static wrist strap).
Install PSU: The rear detachable PSU bracket simplifies this. Slide the PSU into the bracket and then into the case.
Install Motherboard: Carefully place your ATX, EATX, micro ATX, or Mini-ITX motherboard onto the standoffs and secure it.
Install Graphics Card: Utilize the patented graphics card slot clamp for a tool-free installation of GPUs up to 450mm.
Install Storage: Mount 2.5" SSDs and 3.5" HDDs in the dedicated bays and the HDD/SSD combo cage.
Install Fans/Radiators: Use the modular fan and radiator mounts for easier installation of additional cooling solutions (up to 420mm front, 360mm top).
Connect Cables: Utilize the comprehensive cable management system, routing cables through the grommets and securing them with Velcro straps.
Install Side Panels: Reattach the tempered glass side panels, noting their hinged design for easy access.
Compatibility:
Motherboard Form Factors: Mini-ITX, micro ATX, ATX, EATX.
Maximum GPU Length: 450 mm.
Maximum CPU Cooler Height: 190 mm.
Power Supply Length: 220 mm.
Storage: Supports up to 6 drives (2.5" or 3.5").
Radiator Support: Up to 420mm (front), 360mm (top), 140mm (rear).
Care:
Cleaning: Gently wipe the tempered glass panels and aluminum frame with a soft, damp microfiber cloth. Avoid abrasive cleaners.
Dust Filters: Regularly remove and clean the dust filters located at the front, top, and bottom of the case. Use compressed air or a vacuum cleaner on a low setting.
Internal Components: Periodically check that all fans are spinning freely and that no dust has accumulated on heatsinks or radiators. Use compressed air for internal cleaning.