Great | Differentiating Features
No better case for water cooling setups, high-quality construction, supports two PSUs, supports up to fifteen 3.5”/2.5” combo drive bays, five radiator mounting points.
Good | Most Have It
Removable dust filters, incredibly spacious interior.
Average | Competitors May Be Better
No fan controller, only two front USB 3.0 ports, expensive.
If you consider yourself an enthusiast when it comes to PC building, then nothing but the best will do. Here we have the absolute pinnacle of PC cases; where design, function and looks all come together to form the perfect chassis. Picking a winner here was no easy task, and in the end it was a choice between two Super-Towers: the Corsair Obsidian 900D and the Cooler Master Cosmos II. Ultimately, the title went to Corsair’s beautiful behemoth, and here’s why…
As soon as you set eyes on the Corsair Obsidian 900D you’ll be amazed by just how big it is. Weighing 41 pounds and measuring 27.2 inches in height means that not only is this case built like a small tank, but it can hold an incredible amount of hardware.
While the 900D may ship with nine 3.5”/2.5” combo drive bays, as opposed to the Cosmos II’s thirteen, there’s the option to purchase an extra three drive cages, bringing the total up to fifteen. There are also five 5.25” bays, one more than Cooler Master’s case. So whether you’re building the ultimate gaming machine or a beefy server, the Obsidian’s got you covered. Being a Super-Tower, this case can hold several varieties of motherboards, including E-ATX, XL-ATX and HPTX. Additionally, the 900D has room for two vertically mounted PSUs, whereas the Cosmos II has space for one.
The main chamber in this case is, as you would expect, cavernous, with the top section almost being the size of a standard full-tower. With its ten expansion slots and unbeatable cooling potential, you could put enough GPUs in here to make 4K gaming at 60fps an absolute breeze. And speaking of cooling, this is an area where the Obsidian truly excels; not only does it have fifteen fan mount locations (and comes with three 120mm and one 140mm fans), but there are also five radiator mounting points sized from 120mm up to 480mm. Add to this, the 900D lets you remove and rearrange everything with its tool-free design and you’ve got pretty much the perfect case for custom water cooling setups.
While no one can deny the Obsidian looks beautiful in a spartan yet bold kind of way, it may be one area where it plays second fiddle to the Cosmos II. The 900D’s steel and cast aluminum frame, solid steel panels and full painted interior exudes quality, but the Cosmos’ elegant, race-car inspired design has the edge. Looks are, of course, a matter of personal taste. It could be said that visually comparing the Cosmos II to the 900D is like comparing a Ferrari to a luxury SUV.
Some additional plus points for the Obsidian are its four easily removable dust filters, good airflow path, and the fantastic number of cable management options available, such as the cable routing latches and extra routing space behind the motherboard tray.
Does this case have any drawbacks? Well, there is the fact it has only two USB 3.0 ports, and the lack of a fan controller is a bit of a miss. The main problem people may find with the 900D is its eye-watering $300+ price, but this kind of quality doesn’t come cheap.
Make no mistake about it, both the Corsair 900D and the Cooler Master Cosmos II are stunning cases, both perfect for hardcore PC builders and gamers alike. But in the end, there can be only one winner. Because of its sheer number of build options and incredible flexibility the 900D takes the win, but only just.
Source Article from http://www.techspot.com/bestof/cases/