Cosmos S: The S Class for Enthusiast

9 Overall Score
Quality: 9/10
Design: 9/10
Performance: 8/10

Readers who may be familiar with Cooler Master, and their products, have no doubt seen the Cosmos 1000 full tower case, a high end case loaded with features and built for quiet computing. The reviews for this case are amply scattered throughout the net, and the Cosmos 1000 has received a rave reviews (The Tech Report , Hi-techreviews). Cooler Master has now launched a new case branded as the Cosmos S which we shall review today. XCPU have had the privilege to work with this case over the course of about a week and a half, and true to their name, Cooler Master has produced yet another fine product which should continue their reputation of quality, thoughtful design, and craftsmanship.

There are a few qualities of this case really stood out as we worked through this review. First was the weight. Unboxed and empty the case is light weight comparative to other full towners, which derives from the choice of materials which is a mix of aluminum and form molded plastic (high quality) throughout the chassis. Another key feature was the easy access and ample room to work. As one will see as we progress through the review, the motherboard plate and drive bays provide easy access and well designed tricks for good cable management. In fact, the typical process in building a new system is to install drives and PSU prior to installing MB, for fear of dropping and, as a consequence, risk damage to the most critical components. This is certainly not a problem with the Cosmos S, where drives and even the PSU can be swapped with or without the full MB in place without fear of a clumsy flub. Finally, it is clear that the Cosmos S was designed to push a large volume of air, thereby cooling even the hottest running components.

The specification of the Cosmos S is impressive, though this is expected from a quality full tower case.

  • Dimensions: (W) 266 x (H) 588 x (D) 628
    • (W) 10.50” x (H) 108.89” x (D) 24.72”
  • Net weight: 13.8 kg (~30 lbs)
  • Chassis material: Al, panels brushed Al
  • Bays: 7 x 5.25” (exposed), 4 x 3.5” (hidden) – note: 10 5.25” bays are feasible.
    • Optional: Convert one more 5.25” to 3.25” (with included accessories)
  • Fans: 4 included – Front intake, top exhaust, rear exhaust 120 mm fans, one 200×230 mm side panel fan
  • Note: 120 mm fans are 1200 RPM @ 17 dBA
  • IO Panel: 4 – USB, 1 – IEEE 1394 firewire, 1 – Audio (support for Intel HD/AC’97 Audio), 1-MIC


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