Coolermaster Cosmos 25th Anniversary Edition Full Tower Case

  • Innovative Dual Curved Dark Glass
  • Aluminum Chassis and Sturdy Steel Frame
  • Blue LED Ambient Lighting
  • Streamlined Airflow

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Mfr part code: RC-1200-KKN2

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    Coolermaster Cosmos 25th Anniversary Edition Full Tower Case Product Description


    Innovative dual curved dark glass

    Ever since the launch of the original Cosmos II, fans have been asking, or making by themselves, for a windowed side panel. Cooler Master has accepted the challenge and to celebrate the 25th anniversary we have released this special edition. For this special edition we even take it a step further: Both sides come with beautifully crafted curved tempered side panels that blend seamlessly with the sophisticated contours of the case.


    A Legacy of Aluminium

    The first aluminium chassis was made by Cooler Master under the ATCS series. This 25th anniversary edition of Cosmos II is paying its tribute by changing the M/B Tray & Partition Plate to aluminium. Plus, it adds a touch of premium.

    • Aluminium Motherboard Tray with black rubber grommets
    • Aluminium Partition Plate with black rubber grommets
    • Sturdy Steel Frame


    A Touch of Premium

    This special edition features an updated design with two distinctive brushed aluminum handles and a soft brushed aluminum sheen on the front and top panels. The top slide panel covers the Advanced Control Panel and hidden behind the front slide panel lies a stack of hot-swappable drive bays.

    • Solid brushed aluminum handles
    • Solid brushed aluminum covered top
    • Solid brushed aluminum front panel


    Blue LED Ambient Lighting

    When thinking about the cosmos, the color blue will spring to mind. Blue is also the color first used in our chassis. This chassis will bring back that feeling and it will emphasize the beauty of your components with a discrete blue glow from the front LED fan and strip displayed through the tinted tempered glass panels.


    Streamlined Airflow

    Individual cooling zones make sure you have an improved thermal management and a streamlined airflow. With a 200mm blue LED fan in the front and a 120mm fan in the back you are already certain from a quiet cooling performance.



    • Colours: Silver / Black
    • Materials: Appearance: Aluminum, Mesh, Plastic, Body: Steel, Aluminum, Side panel: Glass
    • Dimensions (L x W x H) 664 x 344 x 704 mm
    • Motherboard Support    Micro-ATX, ATX, E-ATX, XL-ATX, SSI CEB, SSI EEB
    • Expansion Slots 10+1
    • Drive Bays: 5.25": 3, 3.5" HDD    13 (2 from X-dock with key locks, 5 HDDs in the middle cage, 6 HDDs in the bottom cage) 2.5" SSD   11 (converted from 3.5" cages)
    • I/O Panel: USB 3.0 x 2, USB 2.0 x 4, Audio In / Out


    Fan Support

    • Top: 120mm fan x 1 installed (optional: 200mm fan x1 / 140mm fan x 2 / 120mm fan x3
    • Front: 200mm LED fan x 1 installed (optional 120/140mm fan x 1)
    • Rear: 140mm fan x 1 installed (optional: 120mm fan x 1)
    • HDD: 120mm fan x 3 (2 fans for bottom HDD / 1 fan for middle HDD (optional))
    • Liquid Cooling Support Top: 240mm/280mm radiator (max 320mm radiator)


    • CPU Cooler: 190mm
    • GPU: 190mm-385mm
    • Power Supply Support    ATX PS2/EPS 12V (optional)

    Add-ons and Accessories


    £12.36 inc. vat
    £13.98save £1.62
    £10.30 ex. vat
    £11.65save £1.35
    £48.86 inc. vat
    £52.14save £3.28
    £40.71 ex. vat
    £43.45save £2.74
    £40.71 inc. vat
    £33.92 ex. vat

    Technical Specifications


    Form Factor Full tower
    Max Mainboard Size Extended ATX
    Supported Motherboards ATX, microATX, Extended ATX, SSI CEB, SSI EEB, XL-ATX
    Specification Compliance ATX12V / EPS2U
    Internal Bays Qty 13
    Front Accessible Bays Qty 3
    Product Material Plastic, aluminium, glass, steel, mesh
    Colour Silver/black
    Cooling System Top: 120 mm fan x 1 ¦ Top: fan mount / 3 x 120 mm or 2 x 140 mm or 1 x 200 mm fan supported ¦ Front: 200 mm fan x 1 ¦ Front: 120/240 mm fan mount x 2 ¦ Rear: 140 mm fan x 1 ¦ Rear: 120 mm fan mount x 2 ¦ Bottom: 120 mm fan x 2 ¦ Internal: 120 mm fan mount x 1
    CPU Cooler Max Height 190 mm
    Video Card Max Length 385 mm
    System Cabinet Features Supports 240/280 mm radiator in top

    Expansion / Connectivity

    Expansion Bays 3 (total) / 3 (free) x front accessible - 5.25" x 1/2H ¦ 13 (total) / 13 (free) x internal - 3.5" x 1/3H
    Expansion Slots 11
    Interfaces 4 x USB 2.0 ¦ 2 x USB 3.0 ¦ 1 x microphone - mini-jack ¦ 1 x headphones - mini-jack


    Power Device No power supply

    Dimensions & Weight

    Width 34.4 cm
    Depth 70.4 cm
    Height 66.4 cm

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