A Closer Look - Outside

Right out of the box, the Obsidian 750D comes with a protective layer on its aluminum-lined front panel and the side window. It becomes quite apparent that the case design is very similar to both the 900D and 350D. Straight edges and an understated design really go well with these materials.


Taking all the major design clues from the 900D, the 750D looks just like a shorter version of its massive brother. The entire front panel is lined with aluminum, and the drive bay covers extend to the edge and are then wider than the actual bay behind it. While the rest is made of plastic, it feels sturdy and solid. Looking at the rear, it becomes apparent that the chassis has an all-black interior. The PSU bay there can be found on the bottom. Both side panels are flat and the main panel features a large window, so you may take a good look at what makes your system tick once it has been fully assembled. The opening is constructed in such a way as to require no screws, bolts, or from the outside visible hooks.


A small Corsair logo adorns the front panel. Pay two little groups of squares heed to figure out where to press to remove the solid panel and dust filter behind it, which reveals two pre-installed AF140L fans. Above that are the three 5.25" drive bays and the I/O consistsing of two USB 3.0, two USB 2.0, and the usual pair of audio plugs. You will also find the power button in the center of the top edge and a tiny reset button next to the audio I/O.


The PSU bay in the bottom of the rear comes with two sets of mounting holes, so you may install the power supply with the fan facing up- or downward. Above that are the nine motherboard expansion slots. You will also find two pre-stamped openings for water-cooling tubes to the left. These may be broken out for such a setup, but there is little reason to do so given the Obsidian 750D comes with several water-cooling possibilities. There is also another AF140L fan in the very top, which is there to push hot air out the back of the chassis.


The entire top of the 750D is one giant air vent. You may install three 140 mm fans here, or even go for a 420 mm radiator. A dust filter on top keeps larger dust particles out of the case should you opt not to use this area at all. It is lined with magnetic strips strong enough to hold the contraption in place well.


Tipping the case on its side reveals two more fan-mounting possibilities on the floor of the 750D, and a dust filter for the power supply bay. The filter may be pulled out the back of the chassis for easy cleaning without putting the chassis down on its side.