Mars Gaming MC-ONYXW Mini-Tower Case

Mini-Tower · mATX / ITX · GPU up to 292 mm

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Form factor Mini-Tower
Motherboard support mATX / ITX
GPU clearance 292 mm

Mars Gaming MC-ONYXW Mini-Tower Case is a mini-tower PC cabinet that takes mATX / ITX motherboards and graphics cards up to 292 mm long. It came out in 2026.

Released: 2026-01-16

Specifications

Key specs

Form factor: Mini-Tower
Motherboard support: mATX / ITX
GPU clearance: 292 mm
Released: 2026-01-16
Part number: MCONYXW
EAN / UPC: 8435693113942

Design

Material: Metal, Tempered glass
Form factor: Mini Tower
Type: PC
Product colour: White
Supported motherboard form factors: micro ATX, Mini-ITX
Number of 3.5" bays: 2
Number of 2.5" bays: 2
Number of internal 3.5" bays: 2
Number of expansion slots: 4
Side window: Yes
Suitable for: Gaming
Illumination: Yes
Illumination colour: Multi
Illumination location: Case fans
Tempered glass panel(s): Yes
Heat sink included: Yes
Anti-dust filter: Yes
Cable management: Yes
Reset button: Yes
On/off button: Yes
Maximum CPU cooler height: 16.5 cm
Maximum graphics card length: 29.2 cm

Power supply

Power supply location: Bottom
Supported power supply form factors: ATX

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Ports & interfaces

USB 2.0 ports quantity: 1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 1
Combo headphone/mic port: Yes

Cooling

Front fans installed: 2x 120 mm
Number of front fans supported (max): 2
Front fans diameters supported: 120 mm
Rear fans installed: 1x 120 mm
Number of rear fans supported (max): 1
Rear fans diameters supported: 120 mm
Number of top fans supported (max): 2
Top fans diameters supported: 120 mm
Number of bottom fans supported (max): 2
Bottom fans diameters supported: 120 mm
Liquid cooling capability: Yes
Rear radiator sizes supported: 120 mm
Top radiator sizes supported: 120,240 mm
Pump motor speed: 1000 RPM

Storage

Supported HDD sizes: 2.5,3.5"
HDD/SSD combo cage: Yes

Weight & dimensions

Width: 200 mm
Depth: 340 mm
Height: 395 mm
Weight: 3.05 kg

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About this product

The MC ONYX is a high-performance microATX case designed to offer extreme airflow in a compact form factor. Its metal mesh front maximizes airflow, while the tempered glass side window shows your hardware clearly. Includes 3 120mm ARGB fans with FDB bearings (2 front + 1 rear) and support for up to 240mm liquid cooling on top, plus space for up to 7 120mm fans. All this with separate bottom chamber power supply, GPU up to 292mm and CPU heatsinks up to 165mm. High-performance metal mesh front The micro-perforated metal mesh front allows extreme airflow directly to the front fans, keeping temperatures under control even in demanding gaming configurations. The mesh also helps filter dust, preserving the interior cleanliness over time. Advanced ARGB cooling as standard The MC-ONYX arrives ready to perform with 3 ARGB120mm fanswith FDB bearings: 2 front inlet + 1 rear exhaust, combining powerful airflow, low noise and long lifespan. Supports up to 7120mm fans and up to240mm radiatorson top, so you can choose between air or liquid without limitations. Its multiple ARGB lighting effects bring a vibrant and spectacular aesthetics to the equipment.

Datasheet (PDF)

MC-ONYXW vs similar cabinets

	Mars Gaming MC-ONYXW Mini-Tower Case	Mars Gaming MCVIEW3 Mini-Tower Case	Mars Gaming MCVIEW3W Mini-Tower Case	Mars Gaming MC3TCORELCDM Mini-Tower Case
Form factor	Mini-Tower	Mini-Tower	Mini-Tower	Mini-Tower
Motherboard support	mATX / ITX	mATX / ITX	mATX / ITX	mATX / ITX
GPU clearance	292 mm	330 mm	330 mm	415 mm
Released	2026	2026	2026	2025