Corsair Obsidian 250D Mini-ITX Computer Case Review


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Building a System

First, I installed the power supply. Although the case with easily accommodate a full-sized ATX power supply, I used Silverstone’s modular ST45SF-G. As with the NZXT H440 case I recently reviewed, the non-removable power supply enclosure makes reaching in to attach modular cables difficult, so plug in the cables you expect to need before installing the power supply. An ATX power supply might actually be easier to deal with since the cable connectors would be easier to reach.


With all four motherboard standoffs pre-installed, it takes just a minute to mount the motherboard.


There are four slide-in tool less drive caddies: two for 2.5″ devices and two for 3.5″ devices (you can use 2.5″ drives in the larger caddies, but you must attach them with screws). Here I’m using two 2.5″ devices and one 3.5″ backup drive. The caddies place the drives very close together, and you probably won’t be able to use a standard multi-connector SATA power cable since the “bend” required to attach connectors to adjacent drives is too severe. I used a Molex-SATA adapter with two “straight” connectors.


As with some other cases, the design of the Obsidian 250D requires you to slide in 5.25″ devices from the front. You can’t remove the tray, install the device, and then put the tray back in the case, since the front bezel of your device won’t fit through the case opening from the rear.


And that’s a pity, because instead of the more secure locking mechanism Corsair uses on most of their other cases, the min-ITX 250D uses this single, rather flimsy latch that engages only one of the four possible mounting points of your device. You can’t use screws to secure the device to the tray since that would require removing the tray, which in turn would require re-installing the tray with the device in it, which won’t work as I noted above. The end result is a 5.25″ device that’s loose and moves noticeably when you touch it.


The inside of the case has lots of tie-down points. You’re going to want to use them, since the design of the case leads to a lot of cable clutter in the front. This images also shows how much clearance you’ll have in front of an NVIDIA GTX780 video card. Which is to say: lots.


I have a nice new Corsair H100i 240mm water cooling system to install next.


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  1. PowerHungry

    In this review, you mention that all the intake areas have filters. My question is, does the rear area that have openings for two 80 mm fans also have a magnetic filter?? If not, should that have been considered a negative?

  2. David Ramsey

    There are no filters for the two 80mm fan positions. This isn’t a negative since you normally mount exhaust fans in that position.

  3. PowerHungry

    I have yet to see “ONE” review where anyone mounted the 80 mm fans, most like you used the Corsair H100i for cooling.

    Corsair should have realized that most people would not mount the 80 mm fans and supplied a filter. Without a filter here, the other filters are almost useless, as you have a wide area for dust to enter.

  4. David Ramsey

    I wouldn’t say the other filters are “almost useless”, since the front fan will move a significant amount of air through its filter, as will the intake fan(s) for a GPU card. In fact there’s noticeable dust on both of these filters in my Hackintosh, which has been running in that case a couple of weeks now.

    Still, you have a valid point about air entering through the 80mm fan mounts. That said, I’m not sure how much of a problem it will be in my particular build, since I think any air coming through that part of the case will be sucked right into the radiator and sent back out. Right now the motherboard and radiator are not noticeably dusty, so perhaps it won’t be an issue.

    The fan mounts are easy enough to cover with duct tape if it really bothers you.

    FWIW, I can’t find any (i.e. “not in the first two pages of Google results”) other reviews using the H100i. AnandTech, Overclock3D, Guru3D, Bit-tech.net, Hexus, Legit Reviews, Overclocker’s Club, and tech report.com all used air coolers. In fact that only other review that I can find that used liquid cooling was HardOCP, and they used a 120mm radiator. So while some other site may have used an H100i, I’m pretty sure it’s not “most” of them.

  5. PowerHungry

    Point taken on the H100i, I should have said most reviews included, a liquid cooler and some used air as well. I stand corrected.

  6. ginko

    Ok, I know it’s been two years since this review, but owning this case, I will be glad to know which components were used in the 5.25″ case slot ?
    It seems to be a 5.25 rack with a slot for slim optical drive and 2.5″ rack ? Brand ? Model ? Thank you !

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