A Closer Look - Inside

Simply swing each side panel open to access the interior. There are no locks or latches. Instead, magnets hold them in place. This works, but you should really secure the doors if you end up carrying the C700M around, just to make sure the panels don't end up opening at an inopportune time.


Taking a first look at the interior, it becomes apparent that Cooler Master has spent a lot of time on updating the insides. Gone are the two elaborately shaped shields. Instead, you will find a more traditional shroud on the bottom of the chassis which may be removed to give access to the PSU bay and additional 3.5" drives. On the opposing side, a similar approach has been taken with a solid panel covering around 40% of the side.


Once that one panel is removed, you will find the next surprise and improvement from the previous C700 chassis: Cooler Master has cleanly routed all the cables from the chassis down the side of the case. You can also see the same elaborate hard drive mounting system as in the P version right behind those cables.

Behind the motherboard, you will find two SSD mounts. However, one of these is already filled with a fairly large PCB that holds both the fan and RGB controllers. You may connect up to six fans to one side and additional RGB lighting elements to the other. It looks different and much sturdier than the one used in the C700P.


In the front, things look a bit more like in the P series as you have the two 140 mm intake fans mounted to a removable frame that allows you to add more, or even include a liquid-cooling setup of up to 420 mm in size in this area. In the very top, a single 5.25" tray can be found even though the Cosmos C700M offers two such openings in the front. Cooler Master also placed two plates on the area where you usually put 3.5" drives. These plates can be used to install additional 2.5" drives.


The shroud has been redesigned to be a single piece on which you will find the unique GPU stand. Next to it is one more 2.5" mounting plate, which brings the total number of installable drives of that size to five without the additional five 3.5" trays.


Underneath the shroud, you can clearly see the PSU bay, shaped as a large tray very similar to the hard-drive ones. Above that are the aforementioned eight expansion slots with their covers held in place by traditional screws. Unfortunately, you won't be able to reach these screws properly while the motherboard tray is inside the chassis, which may force you to take the whole thing apart when you want to add a new expansion card. Another addition to the C700M is the GPU presentation tray, which allows you to install a graphics card with the included ribbon cable and angle it to perfectly show it off to curious onlookers. In the very top, you can clearly see the dark gray 140 mm fan of retail quality.


Looking at the floor of the Cosmos C700M, it becomes apparent that it is a gargantuan dust filter. You may pull it out through the front of the chassis, which makes cleaning it a breeze. Cooler Master has also improved the floor of the M variant by allowing you to install two 120 or 140 mm fans or a 240/280 mm radiator here.


While all the case cables and those for USB 3.0 and audio are of the usual variety, Cooler Master has gone to the bleeding edge by providing a proper USB 3.1 connector for those motherboards that may sport such a plug. On top of that, a 4-pin RGB connector can also be found pre-attached to the controller board, so you may expand your lighting elements, while a PWM fan connector allows you to control the fan speed directly from your motherboard.