PC case DeepCool Matrexx 30 SI Mini Tower — Micro ATX/Mini-ITX, 3x3.5 inch + 2x2.5 inch bays, 25 cm GPU, 15.1 cm CPU cooler, top PSU, black

DeepCool Matrexx 30 SI is a compact M-ATX mini tower case in black designed for small gaming and productivity builds. The case supports Micro-ATX and Mini-ITX motherboards and offers a logical internal layout, front honeycomb air intake, a pre-installed 120 mm rear fan and support for a 120 mm front radiator or fan. It accommodates graphics cards up to 250 mm and provides a simple steel side panel for a minimalist appearance.

Advantages

The Matrexx 30 SI combines a small footprint with effective airflow management through its honeycomb front intake and rear 120 mm fan. Its compact dimensions maximize component compatibility for M-ATX/ITX builds while the lower-mounted power supply design improves internal airflow. Cable routing space on the rear panel and support for common drive sizes make installation straightforward.

Suitable for

• Compact gaming PC builds with Micro-ATX or Mini-ITX motherboards
• Home or office systems where desk space is limited
• Budget builds that require straightforward cooling and cable management

Key specifications

• Form factor: Mini Tower (supports Micro-ATX and Mini-ITX)
• Dimensions (approx.): 193 x 405.8 x 378.2 mm
• Material: SPCC steel and ABS
• Pre-installed fan: 1 × 120 mm (rear)
• Fan/radiator support: front up to 120 mm
• Drive bays: 3 × 3.5", 2 × 2.5", 1 × 5.25"
• Expansion card clearance: up to 250 mm for graphics cards
• Front I/O: 1 × USB 3.2 Gen 1 Type-A, 1 × USB 2.0, headphone jack, power switch
• Weight: 3.62 kg

How to use

Install a Micro-ATX or Mini-ITX motherboard on the standoffs and secure the power supply in its lower compartment. Mount storage drives in the provided 3.5" or 2.5" bays and install the graphics card (up to 250 mm) in the PCIe slots. Connect front-panel I/O cables to the motherboard headers, place the optional 120 mm fan or radiator in the front if needed, and use the rear pre-installed 120 mm fan for exhaust. Route cables through the 14.8 mm rear panel ridge to keep the interior tidy and ensure unobstructed airflow.

Recommendations

For optimal cooling, use the front honeycomb intake with a 120 mm fan or radiator and keep cables routed to the rear space. Verify component dimensions (GPU length and PSU size) before installation to ensure compatibility within the compact interior.