Noise and Thermal Testing

As I mentioned in the introduction, doing our standard noise and thermal testing on the Corsair Obsidian 900D is primarily an academic affair. When you're dealing with a liquid cooling system, optimal airflow design becomes slightly less important. This isn't an air cooling case the way, say, a SilverStone FT02 might be.

Ambient temperature was 21C during testing.

CPU Temperatures (Stock)

GPU Temperatures (Stock)

SSD Temperatures (Stock)

In its stock configuration, the 900D is closer to the middle of the road. This isn't a tremendous surprise; the stock fans are about as basic as a $349 case is going to get.

Noise Levels (Stock)

Because the 900D doesn't include a fan controller, the fans included push the case's bare minimum noise level to 33.6dB.

Overclocking the system should produce fairly similar results.

CPU Temperatures (Overclocked)

GPU Temperatures (Overclocked)

SSD Temperatures (Overclocked)

Again, the 900D produces...acceptable results as an air cooling case.

Noise Levels (Overclocked)

Noise continues to be an issue due both to the lack of a fan controller and the lack of any acoustic padding in the enclosure itself. While we're not judging the 900D on the terms it's meant to be judged by here, I do think omitting noise dampening material may have been a poor decision on Corsair's part.

CPU Temperatures (Full Fat)

Top GPU Temperatures (Full Fat)

Bottom GPU Temperatures (Full Fat)

SSD Temperatures (Full Fat)

Highest HDD Temperatures (Full Fat)

Up until this point drive thermals have been fairly poor, but please note that even under the worst circumstances we're still talking about being 10-15C below spec for these drives at least. They're still running cool, it's just not the aggressive over-cooling a lot of enthusiast cases do.

That said, stock air cooling continues to be fairly underwhelming. This is one place where the competing Rosewill Blackhawk Ultra does have an edge: it includes a stock air cooling design that's pretty aggressive and effective.

Noise Levels (Full Fat)

Despite the lack of a fan controller, under our most stressful test the 900D is able to run quieter than any of the other cases we've reviewed since adding the "full fat" testbed.

Testing Methodology Conclusion: Highly Priced and Highly Specialized
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  • Juddog - Wednesday, April 17, 2013 - link

    Woah that case is a monster!
  • Belard - Wednesday, April 17, 2013 - link

    Thought it was big? A few years ago, I built a PC with the Thermaltake Mozart TX. That case is easily bigger than this. The TX is almost all aluminum and very light. It even has mounting for a second motherboard (itx), tons of drive bays, off top of my head, 8 120mm cooling fan spots.
    It's a beautiful case, it's too bad they no longer make them. An update with USB 3.0 would be nice. It sold for about $250. Google images for the case.
  • Juddog - Wednesday, April 17, 2013 - link

    I'm thinking Corsair probably added some steel because of complaints with various parts of the 800D having durability issues.
  • KLC - Wednesday, April 17, 2013 - link

    "It superficially looks and is built like an overgrown ATX case..." No, it superficially looks like a CRT console TV from 1975.
  • wolrah - Wednesday, April 17, 2013 - link

    Am I the only one who yearns for the days when case windows were an optional extra or something people had to hack in to their case? These days it's challenging to find a large case without one. I do not want to spend hours doing Voodoo-style origami with my server's cables, please don't force me to put them on display.
  • Sabresiberian - Wednesday, April 17, 2013 - link

    There are many cases that don't have a side window. I suggest you buy one of those instead of one that is designed for people who like side windows.

    I found 6 on newegg in about 2 minutes that will hold huge motherboards and have 10 or more expansion slot capability.

    So, no it's not hard at all to find a good case without a side window.
  • wolrah - Wednesday, April 17, 2013 - link

    Finding a case that meets those criteria is different from one that looks good and is good to work with. I assumed I didn't have to be that specific, but for purposes of clarity I have not been able to find any good looking (read: simple) large cases with good build quality and reasonable interior designs that lack windows. There are numerous cases like this one, excellent on all factors except that stupid piece of plexiglass.

    Looking on Newegg right now, since that's your example, I see what I assume to be the same six cases you found. The Thor, CM Storm, and Fusion are all chunky, fugly "LAN G4m3r" styled machines which look like they fell out of a [H]ard|OCP mod thread. All of those are really pushing the definition of "no window" as while it's technically not a clear window the massive open screen on the side has basically the same effect.

    That leaves two Lian-Lis. They're excellent but incredibly expensive and have always pretty much been in a league of their own.

    So yea, unless I want to pay out the nose for the best of the best, it is in fact rather hard to find a large case without this stupid computer ricer shit.
  • Biggestinsect - Wednesday, April 17, 2013 - link

    All Caselabs enclosures give multiple options for side panel design; solid, vented and different windows. They have a couple cases in this price range. Sleeving wires and artfully plumbing the cooling is a lot of the fun of building plus having a window lets you quickly know when and if the thing gets dirty or starts leaking.
  • Sabresiberian - Thursday, April 18, 2013 - link

    I get that you aren't finding what you want, but I still think you vastly overstated the situation, and tried to make out like Corsair did something wrong here. They didn't; they just targeted people with a certain taste in cases, and you weren't in that group. And, there is plenty of room to route cables behind the mainboard tray, so griping about needing to spend extra hours routing cables really doesn't make sense. (If you are watercooling, you are likely to spend far more time routing cooling tubes, heh.)

    The cases we found on newegg are all decent cases; it's really just a matter of personal taste in appearance and what price you are willing to pay. And, the Lian Li cases are about the price of this one, so I don't know how you can complain that this case comes with a side window but those are "incredibly expensive" so not suitable for you. If they aren't suitable because of price, the side window is a moot point, because this case is too expensive as well.

    I'm not trying to pick on you here, I'm trying to get you to see that the case scenario isn't as bleak as you think it is. :) Hey, at least we don't have to put up with one brand or the other of a beige box with no real ability to cool components, heh. Cases have come a long way!

    Really, I think the solution would be to provide optional side panels, but I don't know how feasible that is since not all that many people are going to buy a case like this anyway. I have no use for a side window myself - but I do like side fans, and that's one reason I went with an Enermax Fulmo GT. That case won't help you though since you can still see through the fans, and that's not what you want. (Newegg doesn't carry the Fulmo GT anymore, says it's discontinued, but I still see them on Amazon.) And, it's a steel and plastic case, so if aluminum is your thing that won't suit you either.

    CaseLabs is an option that people have mentioned - but it looks to me like you'll end up paying more for one of their cases than the ~$350 this one costs, so don't know how that's going to work for most people. I paid $210 for the Fulmo GT, that was plenty for my tastes. I'd be willing to spend more - but I have no need to, so there's no point.

    I just has a thought - could you buy a 900D and simply put it so the window doesn't show?
  • kzinti1 - Friday, June 14, 2013 - link

    If you're so against looking at the innards of your case because of a window, why not just go to your local hobby shop, ask for a spray can of black paint for radio-controlled car bodies and paint the inside of the window? I guarantee a perfect opaque finish every single time.
    If you want a removable finish then go to your local car supply and ask for a roll of black-out limousine window tint and stick it on the inside of the computers window. Another simple way to ignore your lousy computer wiring job and also your trouble-shooting led's.
    The window tint would be best as it's easily removed when you sell your case, since with your inattention to detail when assembling your computer, you'll probably fry your components sooner than later.

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