Cooler Master Silencio 650 - exterior
The Cooler Master Silencio 650 is the bigger sibling of the Cooler Master Silencio 550. This isn't just a fresh coat of paint on the same basic chassis, Cooler Master has actually drastically overhauled the case. It's bigger and better in every regard, with an impressive volume of 53 liters (based on the exterior measurements of 20.7x53.7x47.8 cm) and a weight of more than 10 kg. It makes it the heaviest chassis in this round-up, but not the largest. Cooler Master did not shy away from using thick steel and lots of dampening material.
The front of the Silencio 650 has a metal door that covers the entire front, just like the 550. It opens to the left, and the back of it has a thick layer of sound-dampening foam. The front of the case has three 5.25-inch slots, one of which is used by a 3.5-inch hotswap bay that you can place a hard drive in without any further hassle. Cooler Master calls it an X-Dock bay.
The grille on the front you can remove in order to clean the dust filter that's attached to it. The front is constructed in such a way that the two frontal fans are barely able to draw in air. When the door is closed air can only come in via slits on the sides.
The top looks quite plastic and has to sliding parts. Towards the rear there's an air vent, towards the front a large number of connectors. These include 2x USB 2.0, 2x USB 3.0 and an SD-card reader (which the Silencio 550 also has). There is a slide that functions as fan controller. The slide to the right lets you switch between two connected hard drives, when the computer is turned off.