Corsair Obsidian 900D Super Tower Case

Every once in a while, I like to get out of the power supply testing lab to take a look at a computer case. Some have been big, others have been small. Today, I’ve apparently come downtown to review a skyscraper, complete with seventy-five floors of residential living space. Ladies and gentlemen, meet the biggest case I have reviewed to date: the Corsair Obsidian 900D super tower.

PRODUCT: Obsidian 900D
PROD LINK: Obsidian 900D Product Page
PRICE: $344.99 @ NewEgg
Price is at the time of testing!

Well, folks, it’s finally happened. Someone sent me a refrigerator to review. I mean, that’s what it has to be, right? What else comes in a box this big? Corsair’s now shilling fridges, and their first new fridge is called the Obsidian 900D.

I love the fact that the box is asking me what I’m going to do with all this room. Stuff it full of soda, that’s what. I’ve got a regular fridge for all the meats and veggies, so it’s good to have a special one just for my sugar and caffeine collection.

Yeah. It’s a fridge, all right. That stuff about designing a dream PC, state of the art liquid cooling, and file servers is just a red herring; meant to distract the competition at Whirlpool while Corsair gains market share. I’m six and a half feet tall… no computer case shipping box comes up most of the way to my hip height. It’s a damn fridge.

The deception continues on this side of the box. I see drawings of fans, hard drive cages, and doors. It says under “contents” that there’s a super tower PC case in here and a system builder’s guide, but I’m sure they really mean “ice maker” and “defrosting instructions.”

Huh… you know what? I’m starting to think there really is a computer case in this box. Let me just do up a table here with the specifications…

Obsidian 900D – Specifications
ATX, Micro ATX, E-ATX, HPTX, and Mini ITX compatible
Includes three 120 mm AF120L and one 140 mm AF140L exhaust fan
Brushed aluminum front fascia with full cast aluminum surround structure front and rear
Five radiator mounting points:

  • Front: up to 360 mm
  • Top: up to 480 mm (4 x 120) or 420 mm (3 x 140)
  • Bottom side one: up to 480 mm (4 x 120) or 420 mm (3 x 140)
  • Bottom side two (with PSU installed): up to 280 mm (2 x 140) or 240 mm (2 x 120)
  • Rear: 140 mm or 120 mm
Up to fifteen total fan mount locations
Nine tool free 3.5” and screw-in 2.5” combo hard drive bays for maximum storage, upgradable to fifteen total (requires purchasing two additional cages)
Four tool-free 5.25” drive bays
Dual USB 3.0, quad USB 2.0 front panel I/O
Tool free side panel access to top panels.
Magnetic latch bottom HDD/Radiator chamber access with swing-out doors.
Full side panel window
Removable lower rad covers allow you to customize between cooling and clean, refined appearance
Three hot-swap bays integrated into one of three included modular hard drive cages
Ten expansion slots for multi-GPU dream systems
Dual PSU bays
CPU backplate cutout and rubber grommeted cable routing holes
Easily removable dust filters and fan covers
Snap-down cable routing latches and extra routing space behind the motherboard tray
PSU – ATX (not included)
Dimensions: 690 mm x 650 mm x 250 mm

Holy chunkey monkey – 690 mm tall? Ok, that’s just ridiculous. But there are people who do need gobs of space to build their computers when not just any case will do the job. I should know, I built one of them recently. Let me tell you something, people… when an InWin GROne is not enough case for you, it’s time to just go big or go home. My new main rig build was enough to make that big boy seem cramped, and I’m looking forward to seeing what Corsair brings to the table with this beast.

Speaking of bringing things to tables, it turns out the box is about the same height as my photography table, which is 29 inches off the floor. It’s nice to see the case well protected in there by foam, because after spending what this case costs, I don’t think too many of you would be pleased if it came out of there with damage.

There is no manual included with the case – just a quick start guide and warranty info sheet. To be fair, there’s not a lot about this case that’s not intuitive.

Pfft. Not a fridge. It’s the Sears Tower. Hold on a sec while I go up to the observation deck with my DSLR.

Good news! I can see down into Montana from the top of this thing!

Let me just get all that protective plastic off this monster so we can see it properly. By the way, see that tripod in the reflection? First time I’ve had to fully extend it for a computer case. It’s not a short tripod, I just make it look that way.

Well, that’s just one sexy looking view, right there. Like the 750D, only friggin’ huge.

I’m going to answer the obvious question right away – yes, the side panels do interchange with each other. Some of you don’t want windows where you can see them… I am one of those people, ever since I bought a motherboard with a blindingly bright flashing green LED that can’t be turned off.

See that gap around the lower door, there? That’s actually a well-concealed air vent, hinting at some of the cooling capabilities of this case. There’s a matching one on the other side.