Assembly

Installing the motherboard is a breeze because of the space around the edges. You should easily be able to reach all the connectors on the top edge, for example. Even long graphics cards do not pose a problem, so you may want to put the two hard-drive cages on top of each other for more flexibility on the PSU side of things.


Corsair uses well-designed and sturdy hard-drive trays to hold either 3.5" or 2.5" drives. Installing the larger variants does not require any tools. Simply squeeze the drive into place and slide it into the bay of your choice until the tray snaps down at which point the contraption is secured quite well. 2.5" drives require the use of included screws, but the remainder of their installation remains the same.


The ideal spots for SSDs are definitely the four brackets behind the motherboard tray. Just take the one you want to fill off the frame and slide the drive into place past the plastic hook, which snap down to hold it in place. Once filled, put it back onto the Obsidian 750D's frame. That is all—once again, no screws are required.


Installing an optical drive is a breeze as well. Remove the cover of your choice first, which is easily done thanks to the long prongs. As you can see, taking this piece off will not only free up the bay, but also reveal the plastic left and right to the opening, which does, from a purely esthetic standpoint, disturb the chassis' overall look a bit. Now, slide the drive into place past the tension lock; that is, until it snaps down. The system secures such devices quite well. You are then not forced to use any screws, but I would always recommend one to be doubly sure.


Installing the power supply is done by traditional means and with the provided screws. Most normally sized units will fit nicely, even when the hard-drive cage is placed right next to the PSU. You will most likely move it, though, if you use a 1000W+ modular variant.


Cable management within the Obsidian 750D is excellent, so you barely see any ugly leads running across the motherboard. All cables disappear behind the motherboard tray through well-placed, rubber-grommet-covered openings. There are plenty of possibilities to tie cables to the backside of the tray, which separates them nicely. You will, however, need more than just the five provided zip ties.

Finished Looks

The Obsidian 750D makes a great impression with its side panels in place. There are two white LEDs to either side of the power button. One indicates if the system is on while the other lets you know if a hard drive is being accessed.


There is a bit of space to the left and right of the drive bays because of the chassis' width. The bare plastic becomes visible when a drive is installed, which is the downside of these drive bay covers. Corsair has done well by going with a large window as you can clearly see all the cool components working within. Even parts of installed drives don't diminish the view because cable-managment is both easy and efficient, and everything in the rear is where you would expect it to be. All the plugs are then easily accessible.