Cooler Master COSMOS S Chassis

Intro, Specs, and Packaging

It's not very often that we see innovation in a PC chassis.  Of course, just about every other component in a typical PC is enhanced or somehow improved on a regular basis, but chassis haven't really changed all that much in the last few years.  Aesthetically they have gotten more pleasing and diverse, new materials are being used, and there have been some acoustic improvements mostly due to the use of larger, low-RPM fans.  However, take away the fans and fascias and underneath most chassis are pretty similar.  In fact, it's not uncommon for the same chassis to be sold as numerous different models, just with different bezels on the front.

The folks at Cooler Master thouggh have made some significant strides as of late, in an effort to differentiate their products.  The Cooler Master COSMOS, was widely regarded as one of the best full towers available.  We even saw the COSMOS used for a handful of builds by Intel and NVIDIA at press events, which is a testament to its quality.  As good as the COSMOS is though, Cooler Master saw fit to further improve its design and have since released the COSMOS S.

The COSMOS S borrows from the original COSMOS design, but adds some innovative new features like touch sensitive controls, lighted inputs, and a more durable finish.

The Cooler Master COSMOS S Chassis

Cooler Master COSMOS S Chassis
Specifications and Features
Available Color Black
Dimension (W / H / D) (W) 266 x (H) 598 x (D) 628mm
Weight Net Weight: 13.8 kg; Gross Weight: 17.8 kg
Material Chassis: Al. Appearance: Al (side panel: 1.5mm)
Motherboards Extended ATX, ATX
5.25" Drive Bay 7(Exposed)
3.5" Drive Bay 4(Hidden, converted from 3x5.25 inch drive bays)
I/O Panel USB 2.0 x 4, IEEE 1394 x 1, eSATA x 1, MIC x 1, Audio x 1(support Intel HD / AC 97 audio)
Expansion Slots 7 slots
Cooling System Front fan(intake): one 120x120x25mm, 1200 rpm, 17 dBA (included),
Top fan(exhaust): one 120x120x25mm, 1200 rpm, 17 dBA (included),
Top fan: 120mm x 2(optional),
Rear fan(exhaust): one 120x120x25mm, 1200 rpm, 17 dBA (included),
Side fan(intake): 200x230x30mm, 900 rpm, 150 CFM(included)
Power Supply Standard ATX PS2 / EPS 12V (optional)
Optional Component Transparent side panel,
Fan bracket
Other Keep-out requirement for CPU cooler installation:,
At least 5.7 inch(145mm) separation between motherboard and the side panel of COSMOS S


The Cooler Master COSMOS S came packaged in a large double-walled box.  Like virtually every other case, the COSMOS S chassis itself is secured in position in the box by large pieces of Styrofoam and the entire case is wrapped in a plastic bag.  In addition, the chassis is tucked into a reusable cloth sack, to prevent dust from getting onto the chassis during shipping.  The high-quality cloth sack certainly added to the product's out-of-the-box appeal.

Additional accessories for the case, like the power cord, wire ties, adhesive wire tie downs, screws, and the manual were secured inside the chassis itself.  The wire tie downs included with the COSMOS S were a nice touch, because they'll make it easier for users to manage the typical rat's nest of cables that reside inside a high-end PC, without having to make an additional purchase.

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