Testing Methodology

For testing Micro-ATX and 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-Z68MX-UD2H-B3
Graphics Card ASUS GeForce GTX 560 Ti DCII TOP
(tested at stock speed and overclocked to 1GHz/overvolted to 1.13V)
Memory 2x2GB Crucial Ballistix Smart Tracer DDR3-1600
Drives Kingston SSDNow V+ 100 64GB SSD
Samsung 5.25" BD-ROM/DVDRW Drive
Accessories Corsair Link
CPU Cooler Cooler Master Hyper 212 Evo with Cooler Master ThermalFusion 400
Power Supply SilverStone Strider Plus 750W 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.

Thank You!

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

Assembling the Corsair Obsidian 550D Noise and Thermal Testing
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  • zcat - Thursday, March 29, 2012 - link

    It's not just you.

    There is no good reason anymore, imo, for full-size ATX systems, unless you really *need* all those extra bays for internal HDDs as a file server, and/or you need more than the 4 expansion slots that microATX offers (maximum) in a space_heater/gaming_rig for something like 2x double-wide video cards + audio + h/w raid + "futureproof-something".

    If you search newegg, you'll find that there's almost as many microATX motherboards for sale as there are ATX at very similar prices, and many of the microATX cases even approach the size of full ATX.

    In fact, the vast majority of people, even hardcore gamers, could opt for miniITX (vs microATX), as long as they choose one of the few cases that can fit a single full-height & full-length & double-width video cards (like the Sugo's or a few of Lian Li's). Room enough for 2 8GB sticks of ram, an SSD, and HDD, but no insane CPU coolers.
  • Risforrocket - Thursday, March 29, 2012 - link

    Can you give me one reason that is relevant to me why I should use a small case for my computer?

    I think of my computer as a workstation, it has to do everything. And it does. Yes, it has a RAID card and 4 drives in RAID. Yes, it has a full sized ATX deluxe motherboard. Is that ok with you? I also don't believe in water cooling so I like plenty of room for the air to flow around and I like plenty of full sized low speed fans.

    Some day I might build a mini computer to use for... well, something. Maybe as a music/video player. Until then I guess I'll just keep on building my big beautiful workstation computers for no good reason and put things in there that I don't really need.
  • zcat - Friday, March 30, 2012 - link

    So YOU are utilizing the extra space -- good for you -- but most people don't.

    Good reasons to go smaller when you can -- which is most of the time -- is to save on wasted space, materials, and energy. It's called being efficient for the increasingly common case.
  • JarredWalton - Thursday, March 29, 2012 - link

    My experience is that mATX with a high-end graphics card (e.g. GTX 580 or HD 7970 or similar) is going to either run hot, run loud, or both. Mini-ITX is almost impossible to get a reasonably quiet system with a high-end GPU. Meanwhile, if you look at our previous tests of full-towers, there's a reason many of them are quieter and run cooler than mid-towers, never mind mATX.

    So unlike those who "see no use for full ATX anymore", I'm the exact opposite: unless space is at a premium, I see no use for mATX. I have three desks, and they all have a spot for a mid-tower. If I had an mATX case instead of my current case, all I'd end up with is a foot of empty space above the box.

    In case you're wondering, my current main desktops are using a SilverStone Raven (dual 5870 GPUs), an older Lian Li PC7 (single GTX 580 -- this case was not good for dual GPUs), an old Gateway FX530 with a single slot GPU for the display and a dual-slot GPU for GPGPU work (5670 and 5850 currently installed), and the last is some weird Ultra case that was designed to be high-end but really isn't... but it still works well enough for my wife's PC.
  • zcat - Friday, March 30, 2012 - link

    If highest-end SLI + RAID5 are in your vocab, then, sure, you probably want full ATX, else microATX usually strikes the best balance, especially if you choose your case wisely (for silence & air flow).

    My perspective is that of 'good enough' systems (~80th percentile performance) where you save on money, energy, and space by default; not on building the 98% BEST gamer/workstation systems.
  • 7Enigma - Thursday, April 5, 2012 - link

    I'm in complete agreement with you Jarred as well. I think a lot of people like the wow factor of cramming a bunch of components into a shoe box. I'm not one of them. I, like you, would have no use for the extra bit of space a smaller enclosure/mobo would provide (actually it'd be MORE annoying as I'd have to bend down farther to turn on), not to mention the increased difficulty during the build/upgrade as components are closer together, and the increased heat issue of having power-hungry parts adjacent to each other.

    If you're a mobile gamer or living in a dorm room where every inch counts I get it. But for a large percentage of people I just don't see the attractiveness of a smaller form factor.
  • kenyee - Thursday, March 29, 2012 - link

    If you're comparing a case on noise/cooling, it'd be really useful to compare it to other cases in this price range like most other sites do.
    There was mention that the design copied some of the techniques from Fractal Design's cases, but no comparison on performance. I'd have loved to have seen a comparison with the Fractal Define R3 which I think is a direct competitor with possibly less plastic. Newegg's comments also mentioned a lot of damaged cases during shipping so I'm surprised you didn't talk about the packing since you talked about aesthetics ;-)
  • kyuu - Thursday, March 29, 2012 - link

    Please read the article. The reason there are no cases for comparison is stated on the very first page: they revised their testbed and methodology and, therefore, results from previously reviewed cases are not directly comparable.
  • ExarKun333 - Friday, March 30, 2012 - link

    Then AT needs to do a 'silent case' or 'performance case' or the like shootout to get some numbers. The new methodology makes great sense, but what is a review with nothing to compare it to?
  • ggathagan - Friday, March 30, 2012 - link

    So you would have them wait until they've tested 3 or 4 cases and *then* put out the results? No thanks.
    It's a new test bed and new methodology. They have to start somewhere.

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