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be quiet! - Dark Base Pro 900 (Black/Silver) ATX Full Tower Case

( 4.5 Average / 6 Ratings )



be quiet!


Dark Base Pro 900 (Black/Silver)

Part #



Black / Silver


ATX Full Tower

Includes Power Supply


External 5.25" Bays


Internal 2.5" Bays


Internal 3.5" Bays


Motherboard Compatibility


Front Panel USB 3.0 Ports


Maximum Video Card Length

323 mm / 12.717" With Drive Cages
472 mm / 18.583" Without Drive Cages

Completed Builds Using This Part

See All Completed Builds


Prices for this part are not available.

Price History (Excluding Tax) History:


riveteck 12 points 20 months ago
from completed build SILVERBACK

I really like this case. it has allot of options. the fans are very quite. and it's east to take apart and adjust/configure.

I did have to get some replacement rubber post isolators for the glass side mount screws since they were damaged. BeQuiet send me replacement quickly, no hassles at all. great customer service

NOTE: I only have a few gripes. 1. The backside vent screws are very easily lost into a channel that runs along the back side of the chassis. unless you are careful this can cause a screw to fall into the channel/slot and you will have fun trying to get it out. since this case is full size and fairly heavy once its loaded, tumbling it to get a lost screw is no easy task. Just be mindful when using any screws on this case. take your time and you should be good. 2. The manual is kinda of an international mess (if you know what I mean). 3. It would be nice to have a shroud for the PSU and cables.

JingleB 46 points 20 months ago
from completed build RigDumpa

A lot of room to play with and being fully modular in the way the mb could be placed help fit everything in neatly.

iiNNeX 30 points 14 months ago
from completed build Milk Factory

Nice big tower with a lot of features. Probably a little pricey for what you get but the quality of build, flexibility and sturdiness are second to none. And as any be quiet case... it is quiet :)

TheDahle 8 points 8 months ago

Okay, here is where I have a complaint. But not with the case itself necessarily. And some of it is just me and my impatient attitude on this build. I got this case, and it looks great, but I wanted the White one, not available anymore, so I settled for this one and I love the look anyways. The innards are well designed and it is pretty customizable (made up word), everything can come out of it pretty much and you can rotate the whole thing this way and that. My issues came up with the delivery of the case, the top, front and bottom are removable to make working on the innards easy, and when i got my case everything looked to be in order. But as soon as i started removing the tape I noticed that the screws holding the bottom onto the case had broken and the bottom now slides free. I could have RMAed the case and gotten a new one, but I just had to get started. Now it sits in one spot and doesn't move so no one would really ever know that it slides. So I am happy in the end.

I paid at the time of build $209.99 for this Case.

crownedonesteph 3 points 1 month ago
from completed build Zatanna

Pros: This case is very modular, and it is easy to shift things around to the arrangement desired. Also, the case is well-built; it feels quite sturdy while allowing decent airflow.

Neutral: The case has 7 freaking HDD cages, which, in my opinion, is unnecessary. I suppose it would come in handy if you are building a server of sorts and need terabytes upon terabytes of storage (maybe even petabytes), but in most cases, these drive cages go unused. It's very easy to remove them, but the case also doesn't look as nice with just a bunch of holes in it. If there were more covers to close up those holes, perhaps I would be more understanding.

Cons: My biggest gripe about this tower is that it feels massive. Perhaps, it's just because I'm average-sized (5'5"), but after completing the build, my guess is that the entire rig weighs around 50 lbs. Otherwise, I have a few smaller complaints. The manual, for one, could do a much better job of explaining how to remove certain parts of the tower in order to make certain adjustments. Also, the tower doesn't come with a PSU shroud unless you buy the Rev. 2 model, so the cable management is visible and doesn't look the cleanest.

Overall: Despite the flaws, I like this case. For the price at which I bought it ($174 after using a gift card), I think it's worth it.