Hands-on with Cooler Master’s Cosmos Alpha full-tower chassis – sliding, configurable interior makes for lots of possibilities

Hands-on with Cooler Master’s Cosmos Alpha full-tower chassis – sliding, configurable interior makes for lots of possibilities

Up to 4 Top – 120/140/240/280/360 Bottom – 120/140/240/280/360 Side Mount – 120/140/240/280/360/420

Sliding motherboard tray, Sliding Stepless fan mounts, integrated GPU support bar, 2x 20 Gbps Type-C front panel ports

(Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) Starting with the outside, this is a full-tower – a huge one measuring a whopping 26 x 13 x 25 inches (LxWxH), including the handles and feet. It feels very structurally sound, and even when empty, it is heavy. Be sure you have the room for it and a substantial base if it isn’t going to be on the floor, because this case weighs well over 70 pounds once populated with hardware.

The outer frame, with handles and feet, is grey/silver with a matte finish. All panels (front/rear, sides, and top) are black, providing a nice contrast. The front features a decorative plastic grille with large cutouts shaped like the Cooler Master logo, a dust filter behind it, and the two included SilentFlow 200mm fans. A similar grille, with smaller air gaps, is on the rear. Here we see a single Mobius 120mm fan (included), but the space holds up to three 120mm fans — yes, three rear exhaust fans. The ‘exoskeleton’ and grille on the back hide your cables exiting the rear, routing them out the bottom for a much cleaner look than most cases.

On top is a black mesh grille that runs the full depth of the case. The important front IO panel features modern connectivity with four USB Type-A (5 Gbps) ports and two Type-C (20 Gbps) ports – effectively like having a USB hub built into the top of your case. There are also three buttons just below the USB ports. On the right are the power and reset buttons; in the middle is a status (power) indicator light; and on the left is the RGB light switch. It’s a sleek design and includes all the functionality expected from a new high-end chassis.

(Image credit: Future) (Image credit: Future) (Image credit: Future) Inside the case is where the real fun begins. The Cosmos Alpha supports the full range of motherboard sizes, from Mini-ITX to E-ATX/EEB. It’s also rear-connect motherboard/BTF-compatible, which can really clean up the wires . Inside, you can install up to 12 fans (a 4-fan hub with RGB support included) in typical locations (front/side/top/rear), or 4 radiators (up to 420mm on the side). To fit four radiators, three can be mounted on the back, behind the motherboard, with the fourth on top. You can cool anything with that much space available for fans and radiators. Additionally, you can mount your power supply at the top or bottom, where it is hidden from view.

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