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Product Listing
Corsair Obsidian Series 750D - A Solid Full-tower Casing
By Kenny Yeo - 23 Sep 2013
Launch SRP: S$259

Installation & Ease of Use

Installation & Ease of Use

Peeling away the side panel, we are greeted with the cavernous internals of the Corsair 750D.

The internals of the Corsair Obsidian Series 750D is certainly big and should suffice for most enthusiasts. Depending on how you configure the HDD cages, the case will easily swallow graphics cards from 340mm to 460mm in length. So unless you have a radical aftermarket cooler on your graphics cards, it should fit with no issues. The case will also accommodate CPU coolers up to 180mm in height.

Installation is largely a tool-free and straightforward process. Optical drives can be slid into their respectively bays and then locked into place by using a latch. 3.5-inch hard disk drives can installed simply by placing them into the HDD trays and then sliding into the HDD cage. 2.5-inch drives can also be installed within the HDD cage, but that would require screws, better to just use the SSD caddies - they fit 2.5-inch hard disk drives too. In addition, the expansion slots are held in place by thumb screws, which can be removed by hand. The only time you would need to reach for a screwdriver is when you are installing the motherboard.


Installing optical drives and hard disk drives are a tool-free process. The HDD cages are also removable and configurable in their positions.

To install standard 3.5-inch drives, simply attach them to the tray and slide them into the cage. The 3.5-inch drive trays can accommodate 2.5-inch drives but you would need to use screws to secure them in place.

SSDs prices have fallen quite significant in the past year and offering four SSD caddies in certainly in keeping with the times.

The Corsair 750D can fit standard ATX and micro-ATX motherboards. The positions for the standoffs are conveniently marked as well.

A USB 3.0 header is used to enabled USB 3.0 functionality on the front panel.

Corsair offers a fair degree of customizability in so far as cooling options and HDD cages are concerned. The 750D comes with three fans (two front, one rear) and users can opt to install an additional fans on top or at the bottom of the casing, or use the mounting points for installing radiators for their liquid cooling setups. The 750D can accommodate up to 240mm, 280mm and 360mm at the top; 240mm radiators at the bottom; and up to 280mm radiators up front in place of the standard two front intake fans..

The two HDD cages, which hold a total of six drives (both 3.5 and 2.5-inch) can also be shifted and rearranged. By default, the two cages are installed at the bottom side by side, presumably to allow unrestricted airflow from the front intake fans. However, they can also be stacked on each other. If you are opting for only SSDs, they can also be removed entirely, because there are four SSD caddies on the flip side of the case. These caddies are specially designed for SSDs - simply slid them in and they will be locked in place.

As you can see from the photos below, the PSU bay is only just about large enough to accommodate our 750W PSU. For users with larger PSUs, this would mean that they would need to reconfigure the layout of the HDD cage and remove the HDD cage mount. The HDD cage itself is easy to remove - just undo two screws and slide the cage out - but the mount itself requires the user to undo four screws at the bottom of the case.

Users can opt for three 120mm fans or two 140mm ones. Alternatively, the 750D can accommodate 240mm, 280mm and 360mm radiators for liquid cooling setups.

To install fans or radiators at the bottom will require users to remove the HDD cage. Fortunately they are easy to remove, simply undo two screws and slide them out.

To accommodate larger PSUs, users who need to reconfigure the position of the HDD cage as well as remove the mount. The mount needs to be undone from the bottom by removing four screws.

 As you can see the casing is pretty spacious. The only space constraint we found was with the PSU. If you have a larger PSU, you would need to stack the HDD cages.

  • Aesthetics 7.5
  • Functionality 8.5
  • Usability 8.5
  • Value 8
The Good
Good build quality
Largely tool-free operation
Configurable HDD cage layout
Able to accommodate radiators for liquid cooling setups
Spacious internals
The Bad
Uninteresting, bland design
HDD cage needs to be relocated to accommodate large PSUs
Slightly expensive
Lack of handles and wheels make it hard to transport
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