For testing full ATX cases, we use the following standardized testbed in stock and overclocked configurations to get a feel for how well the case handles heat and noise.

ATX Test Configuration
CPU Intel Core i7-2700K
(95W TDP, tested at stock speed and overclocked to 4.3GHz @ 1.38V)
Motherboard Gigabyte GA-Z77X-UD4H
Graphics Card ASUS GeForce GTX 560 Ti DCII TOP
(tested at stock speed and overclocked to 1GHz/overvolted to 1.13V)

2x NVIDIA GeForce GTX 580 in SLI
(full fat testing only)
Memory 2x2GB Crucial Ballistix Smart Tracer DDR3-1600
Drives Kingston SSDNow V+ 100 64GB SSD

Samsung 5.25" BD-ROM/DVDRW Drive

3x HGST DeskStar 3TB 7200-RPM HDD
CPU Cooler Cooler Master Hyper 212 Evo with Cooler Master ThermalFusion 400
Power Supply SilverStone Strider Plus 1000W 80 Plus Silver

Each case is tested in a stock configuration and an overclocked configuration that generates substantially more heat (and thus may produce more noise). The system is powered on and left idle for fifteen minutes, the thermal and acoustic results recorded, and then stressed by running seven threads in Prime95 (in-place large FFTs) on the CPU and OC Scanner (maximum load) on the GPU. At the end of fiteen minutes, thermal and acoustic results are recorded. This is done for the stock settings and for the overclock, and if the enclosure has a fan controller, these tests are repeated for each setting. Ambient temperature is also measured after the fifteen idle minutes but before the stress test and used to calculate the final reported results.

For the "full fat" testbed, the GTX 560 Ti is swapped out for a pair of GTX 580s, and three hard disks are added to fill out the case.

Thank You!

Before moving on, we'd like to thank the following vendors for providing us with the hardware used in our testbed.

Building in the Corsair Obsidian 750D Noise and Thermal Testing
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  • b3nzint - Tuesday, September 24, 2013 - link

    Does it has a gpu holder mechanism? and I need 4 bay 5.25". But overall not bad.
  • hemi79 - Wednesday, September 25, 2013 - link

    This looks like a great case! I had the C70 and just felt the need for more space so I looked into to the Obsidian models, but the 650D model didn't convince me due to the 200mm fans. This seems like the perfect case for my case. I went with the NZXT Switch in Matte Black and while I had all the space I dreamed of, I have to say the quality of the build and material did not compare to the Corsair C70. I almost regretted it, but I made peace with my decision instead of paying return shipping. lol
  • UltraWide - Saturday, September 28, 2013 - link

    One thing you can't tell from the pictures and review is how flimsy this case is. The overall quality is very low, more in line with the Carbide series. The design and layout is excellent, but the metal is just too thin and the case frame/structure bends easily. I am returning mine and going with the NZXT H630.
  • Cainethanatos - Monday, September 30, 2013 - link

    Oh really, is it that bad ? I am aswell looking at the 750D or the H630 . Dustin, compared to the H630, the build quality better oir worse (or the same(ish) ). Otherwise I might need to flip a coin :)
  • lorribot - Saturday, October 5, 2013 - link

    Hands up anyone who would use all 10 HD drive bays? What about all three 5.25 bays?
    I do sometimes feel it is a case of "because we can, we will" when it comes to the number drive bays in cases. I imagine most people are likely to need no more than two, one 2.5 and one 3.5, some may need to use a 5.25 for fan controls or even a blue ray but to be honest I can't remember the last time I put a DVD into a computer.
    It would be a brave case manufacture that dropped completely or only provided ony a single 5.25 bay (or low profile one) and only 2 or 3 2.5/3.5 multi use bays in anything other than an ITX case
    But whatever the case size I would expect improved air flow without all the extra bits of metal spoiling things. It might even reduce prices a bit and simplify installations and provide more layout options internally.

    This case like many others reviewed is safe, uninspiring and of little merit. Apart from the odd case that nudges at the boundaries there is nothing really happening in case design, it is ripe for some real design people to step in and provide some real inspiration and flair, sadly it seems that only Apple, albeit freed from the constraints of standard motherboard layouts, is up for the challenge.
  • limaxophobiac - Friday, October 11, 2013 - link

    "Noise levels prove to be a victory for Corsair, but they're still struggling to beat NZXT's Phantom 630, which runs both quieter and cooler."

    This isn't true at all, look at the test, at Overclocked Load and Full Fat the CPU in the NZXT Phantom 630 is 8-10 degrees hotter, this is HUGE in the 750D favour.
  • limaxophobiac - Friday, October 11, 2013 - link

    Nevermind I was looking at the H630 not the Phantom. The Phantom is indeed cooler.
  • The_Goods - Tuesday, October 15, 2013 - link

    I love the heck out of my 800D. It's a gorgeous space to build a veritable waterpark of cooling.

    When I don't love it, is when I have to pick up the 70lbs of PC manlove.

    These new ones are going to make for some happy hooligans.
  • sdmf74 - Tuesday, October 22, 2013 - link

    dude you have your SSD plugged in to your optical drive WTF
  • Antonio Cortina - Monday, October 20, 2014 - link

    I have this box for a week now and I've seen the HDD LED does not work :(
    Not know the Corsair RMA policy but they should change the box completely.
    I've already put a complaint in the store but they doubt that the supplier's change me for another.
    All Obsidian boxes I've had in the European area had a defect.
    I hope Corsair fix this or lose a lot of customers

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