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Mars Gaming Mc-Onyxw

mATX, Mini-ITX
Price in EUR including VAT
Ratings
Delivered between Wed, 15.4. and Tue, 21.4.
5 pieces in stock at supplier
free shipping

Product details

The MC ONYX from Mars Gaming is a powerful mini tower case specifically designed for microATX and Mini-ITX motherboards. With a compact design, it still offers impressive cooling performance, supported by the micro-perforated metal mesh front panel. This ensures optimal airflow and helps keep temperatures low even during intense gaming sessions. The case features a tempered glass side window that provides an appealing view of the installed hardware. Equipped with three ARGB 120mm fans that offer a combination of strong airflow and quiet operation, the MC ONYX is ideal for users who value both performance and aesthetics. Additionally, it supports the installation of liquid coolers up to 240mm in size and has space for up to seven 120mm fans, allowing for flexible cooling options. The separate power supply chamber ensures a tidy interior and facilitates cable management.

  • Micro-perforated metal mesh front for optimal airflow and dust filtering
  • Three ARGB 120mm fans with FDB bearings for quiet operation and long lifespan
  • Support for up to 240mm liquid cooling on the top
  • Tempered glass side window for an appealing view of the hardware
  • Separate power supply chamber for improved cable management and organization within the case.

Key specifications

PC case design
Mini tower
Number of 3.5" drive slots (internal)
2x
Max. length graphics card
292 mm
Max. height CPU cooler
165 mm
PC case features
Side windows

General information

Item number
66185379
Manufacturer
Mars Gaming
Category
PC case
Manufacturer no.
MCONYXW
Release date
9.1.2026

Colour

Colour
White
Exact colour description
White

Material

Material group
Glass, Metal
Material
Hardened glass, Metal

PC case properties

PC case design
Mini tower
Form factor
Micro ATX (mATX), Mini-ITX
Number of 3.5" drive slots (internal)
2x
"Number of 2.5"" drive slots"
2x
Number of expansion card slots
4x
Max. length graphics card
292 mm
Max. height CPU cooler
165 mm
PC case features
Side windows

Connections

Exact USB ports
USB-A 2.0 (1x), USB-C 3.2 Gen 1 (1x)

Cooling properties

Number of fans
3x
Number of fan slots
7x
Fan location
Front side
Connectable fans (control)
7
Number of radiator mounts
2

Front side

Fans included
1x 120mm, 2x 120mm
Fan mount locations
1x 120mm, 2x 120mm
Radiator mount locations
1x max. 120mm, 1x max. 240mm

Rear side

Fans included
1x 120mm
Fan mount locations
1x 120mm
Radiator mount locations
1x max. 120mm

Side

Fans included
1x 120mm, 2x 120mm
Fan mount locations
1x 120mm, 2x 120mm
Radiator mount locations
1x max. 120mm, 1x max. 240mm

Bottom side

Fan mount locations
1x 120mm

Top side

Fan mount locations
2x 120mm
Radiator mount locations
1x max. 240mm

HDD Cage

Fans included
1x 120mm, 2x 120mm
Fan mount locations
1x 120mm, 2x 120mm
Radiator mount locations
1x max. 120mm, 1x max. 240mm

Voluntary climate contribution

CO₂ emissions
1,69 kg
Climate contribution
EUR 0,12

Scope of delivery

Scope of delivery
Anti-dust filter, Combined headphone/microphone connection, HDD/SSD combo enclosure, Heating basin included, Improved cable management, On/Off switch, Reset button, Side window, Tempered glass panel(s), USB 3.2 Gen 1 (3.1 Gen 1) Number of type A ports

Product dimensions

Height
39.50 cm
Length
34 cm
Width
20 cm
Weight
3.05 kg

Legal Notice

Product Safety

14-day cancellation right
30-day right of return
24 Months statutory warranty
Legal concerns

Compare products

Goes with

Reviews & Ratings

Statutory warranty score

How often does a product of this brand in the «PC case» category have a defect within the first 24 months?

Source: Galaxus
  • Mars Gaming
    Not enough data
  • 1.Silverstone
    0,1 %
  • 2.NZXT
    0,2 %
  • 3.Corsair
    0,3 %
  • 3.Deepcool
    0,3 %

Statutory warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Galaxus
  • Mars Gaming
    Not enough data
  • 1.AeroCool
    0 days
  • 1.Antec
    0 days
  • 1.ASUS
    0 days
  • 1.Darkflash Tech
    0 days

Return rate

How often is a product of this brand in the «PC case» category returned?

Source: Galaxus
  • Mars Gaming
    Not enough data
  • 1.Intertech
    1,8 %
  • 2.LC-Power
    2,5 %
  • 3.be quiet!
    2,7 %
  • 4.NZXT
    2,9 %
Source: Galaxus