Cooler Master Cosmos Alpha Silver
ATX, mATX, Mini-ITXOnly 1 piece in stock at supplier
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.
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-A, USB-C |
Item number | 66382791 |
Manufacturer | Cooler Master |
Category | PC case |
Manufacturer no. | C700-KGNN-S00 |
Release date | 17.1.2026 |
Colour | Black, Silver |
Exact colour description | Black, Silver |
Material group | Glass, Metal, Plastic |
Material | Metal, Plastic, SGCC, Tempered Glass |
PC case design | Full tower |
Form factor | ATX, Micro 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 |
Front connections | USB-A, USB-C |
Exact USB ports | USB-A 3.2 Gen 1 (4x), USB-C 3.2 Gen 2x2 (2x) |
Number of fans | 3x |
Number of fan slots | 9x |
Fan location | Aspect, Bottom side, Front side, Rear side, Top side |
Radiator locations | Aspect, Bottom side, Top side |
Cooling properties | Water cooling possible |
Fans included | 2x 200mm |
Fan mount locations | 3x 120mm, 3x 140mm, 3x 200mm |
Fans included | 1x 120mm |
Fan mount locations | 1x 120mm |
Fan mount locations | 1x 120mm, 1x 140mm, 1x 180mm, 1x 200mm |
Radiator mount locations | 1x max. 120mm, 1x max. 140mm, 1x max. 240mm, 1x max. 280mm, 1x max. 360mm, 1x max. 420mm |
Fan mount locations | 3x 120mm, 3x 140mm, 3x 180mm, 3x 200mm |
Radiator mount locations | 1x max. 120mm, 1x max. 140mm, 1x max. 240mm, 1x max. 280mm, 1x max. 360mm |
Fan mount locations | 3x 120mm, 3x 140mm, 3x 180mm, 3x 200mm |
Radiator mount locations | 1x max. 120mm, 1x max. 140mm, 1x max. 240mm, 1x max. 280mm, 1x max. 360mm |
CO₂ emissions | 1.69 kg |
Climate contribution | CHF 0.11 |
Height | 63.90 cm |
Length | 33 cm |
Width | 66.90 cm |
Weight | 27.50 kg |
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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.Intertech0.6 %
- 21.LC-Power0.6 %
- 24.Cooler Master0.7 %
- 25.Akyga0.9 %
- 26.Kolink1 %
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.NZXT0 days
- 7.be quiet!1 day
- 7.Cooler Master1 day
- 7.Fractal1 day
- 10.Jonsbo2 days
Return rate
How often is a product of this brand in the «PC case» category returned?
Source: Digitec Galaxus- 20.Endorfy4.6 %
- 21.AeroCool4.7 %
- 22.Cooler Master4.9 %
- 22.Deepcool4.9 %
- 24.Jonsplus5.7 %