Corsair Obsidian 900D review: taking it to the next level

Corsair's new flagship chassis raises the bar very, very high. Perhaps too high... for itself.



In 2009, Corsair, up until then known as a memory and power supply manufacturer, entered the computer chassis market with the Obsidian 800D. It is no exaggeration to state it had a profound impact. Both with its premium pricing and long list of features, Corsair set a new standard. Four years later, the 800D can still easily keep up with the competition. Still, it was time for an update, and today we will take a closer look at the Obsidian 900D, which attempts to raise the bar even higher.

Corsair Obsidian 900D

The Corsair Obsidian 900D appears to be positioned above the 800D in terms of size and price, and will reportedly cost around £300 or € 325. That’s close to the what the Cooler Master Cosmos II costs, and that’s not the only thing these two chassis have in common. So the 900D will not replace the 800D, in other words.

The 900D was supposed to be introduced earlier this year, but manufacturing issues caused delays, which is why the official introduction of the new case is today rather than in February. As you can read further on in this review, it appears that Corsair perhaps needs to fine tune the production process a bit, as there were a couple of issues with the test sample we received. However, we should start off by stating the Obsidian 900D is an extraordinary case, featuring a fantastic combination of space for outsized components and cooling options. This is one case that clearly is the product of a great amount of ingenuity, clever design and impressive engineering.

Corsair Obsidian 900D


The Obsidian 900D is big, really big. With a height of 70 cm it’s one of the tallest chassis that we’ve ever tested, and the volume is equally impressive. It's not the biggest chassis we've seen, but it's up there.

We compared the 900D to a number of similar computer chassis. That means large, expensive and room enough for XL-ATX motherboards. We also included a number of smaller chassis that did well in our tests, as not everyone buys a chassis like the 900D just for putting an huge motherboard in it. That’s only one of the advantages.


two products discussed in this review

  Product Lowest price

Corsair Obsidian 800D

Tower, ATX, Black, Window, 3 fans

Specifications Test results Reviews

Corsair Obsidian 900D

Tower, XL-ATX, Black, Window, 4 fans

Specifications Test results Reviews Prices


Avg. £339.99
2 shops, 2x stock

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