Cooler Master Cosmos SE ATX Tower Case

Cooler Master Cosmos SECooler Master is a name synonymous with high end, high performance PC peripherals. Not long ago the Cooler Master Cosmos was released and it was a smash it. However, not everyone has the room for a full tower case. Enter the Cooler Master Cosmos SE. The Cosmos SE is the full size Cosmos’ little brother. The Cosmos SE is packs a massive amount of features into a small package.
The case is modded from the factory, but there is so much more to be done. Cooler Master has been a major supporter of the modding community in recent years and the Cosmos SE offers a great stopping point for some while it is a great starting point for others who would like to take the modding further.



Review Sample Provided by: Cooler Master
Product Name: Cooler Master Cosmos SE
Price at time of review: $  USD
Product was given in exchange for work done to produce this review.

Features and Specifications

  • Supercar inspired design with aluminum curve handles
  • Superior liquid cooling support: 120, 240, 280 and 360mm radiator; supports 3 radiators at once – 120+280+360mm
  • Supports up to 8 fans, including 4 installed fans – two front 120mm blue LED fans with LED on/off control, one top 140mm fan and one rear 120mm fan
  • Dual Super Speed USB 3.0
  • Great expandability with the support of up to 8 HDDs/18 SSDs
  • Supports all high-end VGAs up to 395mm/15.5 inches long and CPU coolers up to 175mm/6.9 inches tall
  • Large cable management space – 34mm
  • Multiple removable dust filters (top, front, bottom, side panel) for improved system maintenance


Model NumberCOS-5000-KKN1 / COS-5000-KWN1
Available ColorMidnight Black
MaterialsPolymer, steel, aluminum, mesh front bezel, rubber
Dimensions (W x H x D)263.8 x 569.4 x 524.4 mm / 10.4 x 22.4 x 20.6 inch
Net Weight10.8 kg / 23.8 lbs
M/B TypeATX, microATX, Mini-ITX
5.25″ Drive Bays3 (exposed)
3.5″ Drive Bays8 (hidden)
2.5″ Drive Bays18 (hidden; 16 converted from 3.5″ bays)
I/O PanelUSB 3.0 x 2, USB 2.0 x 2, Audio In & Out
Expansion Slots7
Cooling SystemTop: 120/140mm fan x 2 (one 140mm black fan installed, 1200 RPM, 19 dBA) Front: 120mm blue LED fan x 2 (installed; with LED on/off), or 140mm fan x 1 (optional) Rear: 120mm fan x 1 (installed, 1200 RPM, 17 dBA) Side: 120/140mm fan x 1 (optional) HDD cage: 120mm fan x 2 (optional)
Power Supply TypeStandard ATX PS2
Maximum CompatibilityVGA card length: with HDD bracket: 276mm / 10.9 inch without HDD bracket: 395mm / 15.5 inch CPU cooler height: 175mm / 6.9 inch

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