Articles: Cases/PSU

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Cooler Master Cosmos 1000

Cooler Master’s products enjoy a good reputation and the company’s senior models are often chosen for assembling expensive top-end computers. We have recently tested the company’s very good Elite 100 model for mini-ITX/micro-ATX mainboards and are going to review several of its products more in near future. Today, we will talk about the ambitious Cosmos 1000. Cooler Master positions it as a basis for building fast, yet very quiet, computers.


The Cosmos 1000 has a queer appearance with two pairs of metallic arcs at the top and bottom. The bottom arcs support the chassis, protruding below the bottom panel and being wider than the latter. The top pair can serve as carry handles. The case is not very heavy for its size (it is longer than most same-class products and just a little lower than standard Big Tower enclosures), yet it is not easy to carry it by the handles. The front door is coated with dark and glossy plastic which is only contrasted by a shiny Cooler Master logo below and a product series name above.

The door is a thick sheet of aluminum. It opens access to the external 5.25-inch bays. Although the front panel behind the door is meshed, this section of the case is no part of its ventilation because there is a blank metallic wall behind the mesh. To avoid scratches and loud claps, the chassis and the door are equipped with soft pads. You can swap them with the metallic hinges of the door to change the way the latter opens up.

The top panel of the case is populated with lots of various elements such as buttons and connectors. Behind them there is a ledge where you can place some small things. At the back of the top panel you can see a large vent grid.

Below that grid there are two of the four 120mm Cooler Master fans (A12025-12CB-3BN-F1) that are responsible for ventilation in this enclosure. One fan is placed exactly opposite the grid while the other, which is closer to the center of the chassis, can only get some air from the narrow tunnel between the metallic top panel and the plastic cover above. The good side of this solution is that dust cannot easily come into the system case from above but the cooling efficiency may suffer.

All of the case’s buttons and connectors are in the front part of the top panel. The Power button is separated from the Reset one with two activity indicators. These buttons are different size, so you cannot confuse them.

There is a rich selection of connectors here: four USB ports, two audio connectors, one FireWire and one eSATA port. All modern interfaces for external devices are present. The only disappointment is that the USB ports are placed in two pairs and you cannot plug two thick devices into the ports of one pair simultaneously.

The back panel is typical enough for a system case with a bottom position of the power supply. Two things must be noted here. First, you can see two levers to the sides of the rubberized openings for the pipes of a liquid cooling system. By lifting these levers up, you release the hitches at the top of the side panels and then you can just pull those panels up. It is easy to put them back: just put the panels into their places and press them to the chassis. This fastening system is simple and easy but not very reliable. If you don’t lay the cables neatly enough, they might prevent you from closing the right panel.

The second noteworthy thing is the inconspicuous dust filter at the bottom. It can be easily taken off for cleaning.

To be exact, there are not one but two filters in the bottom panel. One is at the back, under the power supply. And the other is at the front, near the HDD rack. Thus, the airflows in this system case go from the bottom upwards rather than from the front backwards. With such supports as the Cosmos 1000 has, there is a large clearance between the bottom panel and the floor, so this structure of airflows is going to be effective, especially as it is further facilitated by the natural convection inside the chassis.

We like the above-mentioned fine dust filters. They prevent dust from the floor to get into the chassis and can be easily taken out for cleaning.

The side panels have no vent openings and are lined on the inside with a wave-shaped sound-absorbing material. This lining will absorb high-frequency noise more effectively than low-frequency one, but you can indeed expect the system case to be quiet overall.

The interior design is quite interesting. We can note a few characteristic features. First, there is a plastic casing that directs the flow of air around the graphics card. Cables can be hidden behind the right panel, and there is no partition separating the power supply from the rest of the components. The HDD racks are oriented across the case. We will discuss all these features in more detail below.

Talking about the chassis in general, the manufacturer tried to reduce its weight by making it composite. Both aluminum and steel elements are present here. The frame itself is 0.7mm steel, which is not thick. We had expected a thickness of 1 millimeter in a chassis of that size. Still, the rigidity of the case is high, thanks to the massive lengthwise tube-like elements and the additional bracing rod at the top.

The internal flat elements such as the side panels of the HDD rack or the area below the mainboard are not rigid enough, however, especially compared to the side panel made of a thick sheet of aluminum.

Inside the chassis you will find a piece of paper with mainboard’s mounting holes marked out. You can refer to it to make out what holes are used for a particular form-factor of mainboards. You have to take it off before installing your mainboard and it may be difficult then to match the numerous holes in the chassis with the marks on the paper. Anyway, it is going to help you a little.

The packing of the joint between the side panels and the chassis is good. There is a rubber pad going all around the joint with the addition of a strip of silicone at the bottom.

We can also see a small vibration-absorbing pad on the power supply support. This support is only meant for short power supplies and the vent opening underneath is not as large as might be possible. Anyway, you shouldn’t have any problems with long PSUs. There is enough of space at the bottom of the case behind the intake fan. The fan is installed into a plastic box whose top is designed like a turning grid for you to adjust the direction of the air flow to some extent.

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