ASUS ROG Strix Helios II Mid-Tower Case
E-ATX Mid Tower4× 140mm PWM420mm RadiatorUSB-C Gen2x2
The ASUS ROG Strix Helios II GX601S (part number 90DC00W0-B39000) is a premium E-ATX mid-tower gaming case built with dual tempered-glass panels, an aluminium frame and four pre-installed 140mm PWM fans, with support for radiators up to 420mm. A diamond-cut front grille, generous 450mm GPU clearance and fast front USB-C make it a showcase chassis for high-end gaming and creator builds. Typically in stock with fast delivery across Cyprus.
Compatibility & good to know
The Helios II fits E-ATX, ATX, Micro-ATX and Mini-ITX motherboards, graphics cards up to 450mm long, and ATX power supplies up to roughly 221mm via a detachable rear bracket. No power supply is included. Its dual tempered-glass panels showcase the interior, so plan cable management and RGB accordingly.
Best For
✓High-end E-ATX gaming and creator builds
✓Large front and top radiator liquid cooling
✓Long flagship GPUs up to 450mm
✓Showcase dual tempered-glass builds
✓Fast front USB-C (Gen 2x2) transfers
✓Aura Sync RGB themed setups
Key Features
Premium dual-glass design
Dual tempered-glass side panels and an aluminium frame give a clean, showcase look, with a distinctive diamond-cut front grille and 3D-structured dust filter.
Strong cooling out of the box
Four 140mm PWM fans come pre-installed, with support for up to 7× 120mm or 6× 140mm fans and radiators up to 420mm at the front and 360mm on top.
Room for high-end hardware
Space for E-ATX motherboards, graphics cards up to 450mm and ATX power supplies up to around 221mm makes it ready for flagship components.
Fast, modern front I/O
Front connectivity includes 2× USB 3.2 Gen 2x2 Type-C and 4× USB 3.2 Gen 1 Type-A ports, with Aura Sync RGB lighting for personalisation.
Technical Specifications
| Identification |
| Part Number |
90DC00W0-B39000 |
| EAN / GTIN |
4711636061193 |
| Model |
ROG Strix Helios II GX601S |
| Form Factor |
| Case Type |
Mid Tower |
| Motherboard Support |
E-ATX, ATX, Micro-ATX, Mini-ITX |
| Cooling |
| Fans Included |
4× 140mm PWM (140 × 28mm) |
| Fan Support |
Up to 7× 120mm or 6× 140mm |
| Radiator Support |
Front up to 420mm, Top up to 360mm |
| Clearances |
| Max GPU Length |
450 mm |
| Max PSU Length |
Approx. 221 mm (8.7") |
| Front I/O |
| USB-C |
2× USB 3.2 Gen 2x2 Type-C |
| USB-A |
4× USB 3.2 Gen 1 Type-A |
| Audio |
Headphone / microphone |
| Build |
| Panels |
Dual tempered glass |
| Frame |
Aluminium |
| Front |
Diamond-cut grille + 3D dust filter |
| Lighting |
Aura Sync RGB |
| Power |
| PSU Support |
ATX (not included) |
| Physical |
| Dimensions |
250 × 565 × 591 mm |
| Colour |
Black |
Frequently Asked Questions
What size motherboards does it support?
It accommodates E-ATX, ATX, Micro-ATX and Mini-ITX motherboards, giving plenty of flexibility for high-end and compact builds alike.
How long a graphics card will fit?
Graphics cards up to 450mm long are supported, covering even the largest current flagship GPUs.
Does the case include a power supply?
No. It supports standard ATX power supplies up to around 221mm, installed via a detachable rear bracket, purchased separately.
How much cooling does it support?
It ships with four 140mm PWM fans and supports up to 7× 120mm or 6× 140mm fans, plus radiators up to 420mm front and 360mm top.
Singular Expert Insight
The Helios II is a premium showcase mid-tower: its dual tempered glass, aluminium frame and four pre-installed PWM fans make it a strong base for a high-end, well-cooled build with fast front USB-C. If you want a cable-hiding interior built around ASUS BTF motherboards, the ROG Hyperion GR701 BTF Edition is the full-tower alternative; if you are on a tighter budget, the ASUS Prime AP series offers airflow-focused cases for less. For most flagship ATX and E-ATX builds, the Helios II strikes a strong balance of looks, cooling and expandability.
Buyer's Guide
Buy it if
You want a premium E-ATX mid-tower showcase case with dual glass, strong cooling, long-GPU clearance and fast front USB-C.
Skip it if
You are building compact or on a budget, or you want an airflow-first mesh case rather than a glass showcase.
Also consider
The ROG Hyperion GR701 BTF full-tower for BTF builds, or the ASUS Prime AP series for a more affordable airflow case.