−20%

Cooler Master Cosmos Alpha Silver

ATX, mATX, Mini-ITX
was CHF489.–
Delivered between Wed, 22.4. and Wed, 29.4.
Only 1 piece in stock at supplier
free shipping

Product details

The Cooler Master COSMOS Alpha Silver is a premium computer case designed for high-performance PC configurations that require superior cooling and component compatibility. This full-tower chassis features a distinctive brushed silver aluminum exterior that combines aesthetic appeal with structural durability. With dimensions of 55.5 cm in height, 24.5 cm in width, and 59.5 cm in depth, it offers ample interior space for hardware configurations. It supports Extended ATX, ATX, Micro-ATX, and Mini-ITX motherboards to meet diverse system requirements. The case provides multiple cooling options with room for up to nine 120mm fans or liquid cooler radiators up to 420mm in length, ensuring optimal thermal management for demanding components. Tool-free drive bays allow for easy installation of storage devices, including 3.5-inch and 2.5-inch drives. The front I/O panel includes two USB 3.0 ports, two USB 2.0 ports, and HD audio jacks for convenient peripheral access. The interior layout offers extensive cable management options with dedicated routing channels and mounting points, promoting clean airflow and organized builds. Transparent side panels made of tempered glass or acrylic, depending on the configuration, provide a clear view of internal components. Dust filters at air intake areas contribute to system cleanliness and longevity. The chassis features multiple expansion slots for graphics cards and other PCIe devices, supporting GPU lengths of up to 49 cm. Constructed with a steel frame and aluminum accents, the COSMOS Alpha Silver combines robust construction with refined design elements for workstation, gaming, or enthusiast computing environments.

Key specifications

PC case design
Full tower
Number of 3.5" drive slots (internal)
2x
Max. length graphics card
400 mm
Max. height CPU cooler
186 mm
Max length of power supply
240 mm
PC case features
Side windows
Front connections
USB-AUSB-C

General information

Item number
66382791
Manufacturer
Cooler Master
Category
PC case
Manufacturer no.
C700-KGNN-S00
Release date
17.1.2026

Colour

Colour
BlackSilver
Exact colour description
BlackSilver

Material

Material group
GlassMetalPlastic
Material
MetalPlasticSGCCTempered Glass

PC case properties

PC case design
Full tower
Form factor
ATXMicro ATX (mATX)Mini-ITX
Number of 3.5" drive slots (internal)
2x
Number of expansion card slots
8x
Max. length graphics card
400 mm
Max. height CPU cooler
186 mm
Max length of power supply
240 mm
PC case features
Side windows

Connections

Front connections
USB-AUSB-C
Exact USB ports
USB-A 3.2 Gen 1 (4x)USB-C 3.2 Gen 2x2 (2x)

Cooling properties

Number of fans
3x
Number of fan slots
9x
Fan location
AspectBottom sideFront sideRear sideTop side
Radiator locations
AspectBottom sideTop side
Cooling properties
Water cooling possible

Front side

Fans included
2x 200mm
Fan mount locations
3x 120mm3x 140mm3x 200mm

Rear side

Fans included
1x 120mm
Fan mount locations
1x 120mm

Side

Fan mount locations
1x 120mm1x 140mm1x 180mm1x 200mm
Radiator mount locations
1x max. 120mm1x max. 140mm1x max. 240mm1x max. 280mm1x max. 360mm1x max. 420mm

Bottom side

Fan mount locations
3x 120mm3x 140mm3x 180mm3x 200mm
Radiator mount locations
1x max. 120mm1x max. 140mm1x max. 240mm1x max. 280mm1x max. 360mm

Top side

Fan mount locations
3x 120mm3x 140mm3x 180mm3x 200mm
Radiator mount locations
1x max. 120mm1x max. 140mm1x max. 240mm1x max. 280mm1x max. 360mm

Voluntary climate contribution

CO₂ emissions
1.69 kg
Climate contribution
CHF 0.11

Product dimensions

Height
63.90 cm
Length
33 cm
Width
66.90 cm
Weight
27.50 kg

30-day right of return
24 Months Warranty (Bring-in)

Compare products

Goes with

Reviews & Ratings

Warranty score

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

Source: Digitec Galaxus
  • 21.Intertech
    0.6 %
  • 21.LC-Power
    0.6 %
  • 24.Cooler Master
    0.7 %
  • 25.Akyga
    0.9 %
  • 26.Kolink
    1 %

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: Digitec Galaxus
  • 1.NZXT
    0 days
  • 7.be quiet!
    1 day
  • 7.Cooler Master
    1 day
  • 7.Fractal
    1 day
  • 10.Jonsbo
    2 days

Return rate

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

Source: Digitec Galaxus
  • 20.Endorfy
    4.6 %
  • 21.AeroCool
    4.7 %
  • 22.Cooler Master
    4.9 %
  • 22.Deepcool
    4.9 %
  • 24.Jonsplus
    5.7 %
Source: Digitec Galaxus