Case ASUS ROG Strix Helios II EATX Mid-Tower Black - 90DC00W0-B39000

ASUS ROG Strix Helios II is a massive middle tower case from the high-end class, aimed at more serious gaming and enthusiast builds. It supports ATX, Micro ATX, and Extended ATX motherboards, giving you the freedom from a typical gaming build to a more packed EATX monster. The side panel is made of tempered glass, which directly suggests an orientation towards showcase builds with lighting and well-organized cable management. The included 4 x 140 mm fans right out of the box provide serious airflow without having to think about additional fans immediately.

What you get

The spacious interior accommodates graphics cards up to 450 mm, which practically opens the door for almost any modern high-end GPU, plus a thick front radiator or push-pull configuration if you decide to go water cooling. The maximum height for an air cooler of 190 mm means that almost all massive tower CPU coolers are in play. With 8+2 expansion slots, you can also use wider graphics cards, vertical mounting (with a suitable riser), or additional cards (capture, sound, network). With separate slots – 2 x 3.5" and 4 x 2.5" – you can easily combine large HDDs for storage and several SSDs for the system and games without compromising airflow. On top of that, the front panel with 4 x USB 3.0 saves you from constantly reaching behind for flash drives, external drives, and peripherals.

• Support for motherboards in ATX, Micro ATX, and Extended ATX format, allowing from standard gaming systems to richer configurations with many slots and devices.
• Form factor Middle Tower, providing a good balance between size, airflow, and space for powerful hardware and cables.
• Side panel made of tempered glass, which showcases the hardware and lighting while being more durable than regular glass.
• Factory-installed 3 x 140 mm fans at the front and 1 x 140 mm at the back for stable airflow right from the first start.
• Ability to mount up to 3 x 120 / 2 x 140 mm on top, 3 x 120 / 140 mm at the front, and 1 x 120 / 140 mm at the back, allowing serious air or water configurations with radiators.
• Up to 450 mm graphics card length, so it comfortably accommodates even massive triple-fan and thick GPU models.
• Support for CPU coolers up to 190 mm height, giving you the freedom to use high-end air towers without wondering if they will touch the panel.
• 2 x 3.5" and 4 x 2.5" slots, allowing a combination of large HDDs for storage, media, or projects and several fast SSDs for the system and games.
• A total of 8+2 expansion slots, suitable for multi-GPU scenarios, vertical mounting of a graphics card, or adding capture/sound/network cards.
• Front I/O ports with 4 x USB 3.0 and 1 x HD Audio, providing quick access to peripherals and headphones without bending over to the back panel.

Who it is suitable for

This case is for you if you are pursuing a powerful gaming or enthusiast build with a large GPU, serious cooling, and plenty of storage, and you want to showcase it behind glass. It is also suitable for heavier workstation configurations with multiple cards and many drives. If your goal is an ultra-compact build or a super budget system, its size and capabilities will likely be more than you need.

The strongest aspect of the ASUS ROG Strix Helios II is the combination of spacious internal volume, rich cooling support, and room for long graphics cards, plus a glass panel and convenient front I/O – a case around which you can comfortably plan a serious build for years to come.