Antec CX300M ARGB M-ATX Mini Tower Cabinet – Compact, Stylish & Optimized for High-Airflow Builds

The Antec CX300M ARGB M-ATX Mini Tower Cabinet is designed for PC builders who want compact size without compromising on cooling efficiency, aesthetics, or hardware compatibility. With its unique panoramic 270° view, versatile cooling options, support for powerful GPUs, and intelligently optimized airflow, the CX300M ARGB redefines what a modern mini-tower cabinet can offer.

Crafted with a combination of steel, tempered glass, and premium construction elements, this case is perfect for Micro-ATX and ITX builds—whether you're creating a high-performance gaming system, a creator-focused workstation, or a stylish compact PC for your setup. Its vertical cooling structure, support for up to 9 fans, and multi-radiator compatibility provide exceptional thermal performance in a small footprint.

Panoramic 270° Glass View – Showcase Every Detail of Your Build

The standout feature of the CX300M ARGB M-ATX Mini Tower Cabinet is its seamless 270° tempered glass design, covering the front and left side for a clear, unobstructed view of your components. This panoramic presentation transforms your PC into a display piece, enabling you to highlight:

• ARGB lighting
• Custom cooling loops
• High-end GPUs
• Premium air coolers
• Cable management aesthetics

This design makes the CX300M M-ATX Mini Tower Cabinet an ideal choice for gamers, streamers, and PC enthusiasts who love visual elegance.

Vertical Cooling Structure for Powerful Airflow Performance

Unlike traditional mini-towers, the CX300M incorporates a vertical cooling system that pulls air from the bottom and sides and releases heat through the top and rear. This innovative design significantly enhances cooling efficiency.

Benefits include:

• Increased cold air intake
• Improved heat dissipation
• Lower GPU and CPU temperatures
• Optimal airflow direction for stacked hardware

This configuration is ideal for high-wattage components and extended gaming sessions.

Extensive AIO Liquid Cooling Support

Even in a compact form factor, the CX300M offers impressive liquid cooling support:

H3: Radiator Compatibility

• Top: 120 / 140 / 360mm (Memory height limited to 45mm if interference occurs)
• Side: 120 / 240mm

This wide compatibility allows builders to install high-performance cooling systems typically reserved for larger cabinets.

Up to 9 Fans for Extreme Cooling Customization

One of the most impressive features of the CX300M ARGB is its ability to support up to 9 × 120mm fans, ensuring unmatched airflow potential in its class.

Fan Support Breakdown

• Top: 3 × 120mm / 2 × 140mm
• Side: 2 × 120mm
• PSU Shroud: 2 × 120mm
• Bottom: 1 × 120mm
• Rear: 1 × 120mm

This makes the cabinet ideal for users running high-end GPUs and CPUs that generate significant heat.

Included with the case are:

• 2 × 120mm fixed-mode ARGB reverse fans (right side)
• 1 × 120mm fixed-mode ARGB fan (rear)

These fans ensure excellent airflow and stunning lighting out of the box.

Support for High-End Components & Unlimited Performance

Despite its Mini Tower classification, the CX300M is ready for top-tier gaming components:

• Max GPU Length: Up to 420mm
• Max CPU Cooler Height: Up to 170mm
• PSU Length: Up to 245mm (with cables)

This ensures compatibility with modern GPUs like RTX 4090/4080, large dual-tower air coolers, and high-wattage PSUs.

Anti-vibration EVA cushion pads on the PSU mount help reduce noise and prevent structural resonance.

Clean Cable Management & Spacious Interior Layout

With 27mm of cable routing space, the case offers:

• Smooth build experience
• Better airflow
• Cleaner aesthetics
• Hassle-free upgrades

Even first-time builders can easily achieve a professional, tidy configuration.

User-Friendly I/O Panel for Daily Convenience

The top I/O panel includes:

• Power Button
• LED On/Off Switch
• USB 2.0 × 2
• USB 3.0 × 1
• Headphone/Mic (HD Audio)

This provides easy access to peripherals, audio devices, and storage drives.