Testing Methodology

For testing 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.

Full ATX Test Configuration
CPU Intel Core i7-875K
(95W TDP, tested at stock speed and overclocked to 3.8GHz @ 1.38V)
Motherboard ASUS P7P55D-E Pro
Graphics Card Zotac NVIDIA GeForce GTX 580 (244W TDP)
Memory 2x2GB Crucial Ballistix Smart Tracer DDR3-1600
Drives Kingston SSDNow V+ 100 64GB SSD
Western Digital Caviar Black 1TB SATA 6Gbps
Samsung 5.25" BD-ROM/DVDRW Drive
CPU Cooler Zalman CNPS9900 MAX with Cooler Master ThermalFusion 400
Power Supply SilverStone Strider Gold 750W 80 Plus Gold

A refresher on how we test:

Acoustic testing is standardized on a foot from the front of the case, using the Extech SL10 with an ambient noise floor of ~32dB. For reference, that's what my silent apartment measures with nothing running, testing acoustics in the dead of night (usually between 1am and 3am). A lot of us sit about a foot away from our computers, so this should be a fairly accurate representation of the kind of noise the case generates, and it's close enough to get noise levels that should register above ambient.

Thermal testing is run with the computer having idled at the desktop for fifteen minutes, and again with the computer running both Furmark (where applicable) and Prime95 (less one thread when a GPU is being used) for fifteen minutes. I've found that leaving one thread open in Prime95 allows the processor to heat up enough while making sure Furmark isn't CPU-limited. We're using the thermal diodes included with the hardware to keep everything standardized, and ambient testing temperature is always between 71F and 74F. Processor temperatures reported are the average of the CPU cores.

For more details on how we arrived at this testbed, you can check out our introductory passage in the review for the IN-WIN BUC.

Last but not least, we'd also like to thank the vendors who made our testbed possible:

Thank You!

We have some thanks in order before we press on:

Assembling the Fractal Design Arc Midi Noise and Thermal Testing, Stock
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  • Z Throckmorton - Friday, October 7, 2011 - link

    Thanks again, Dustin. I wholeheartedly agree that the Arc Midi is about as good as it gets for just under $100. I've used it for a handful of builds and it has become my go-to Benjamin case for many of the reasons you highlight - it's very good at stock and great when you take the time tweak it a bit (primarily, replace its fans or at least volt mod them). That said, I'm surprised that you'd put the IN-WIN BUC slightly ahead, or even really near the Arc Midi. In my opinion the BUC feels noticeably cheaper, it's harder to work with, and while looks are subjective, it's hideous compared to the Arc Midi. The Corsair 400R is a compelling alternative, but its rounded, bulbous, flared accents make it look like something the Stay Puft Marshmallow Man might design. The customers for whom I've assembled systems in the Arc Midi rave about it.
  • ckryan - Friday, October 7, 2011 - link

    Dustin, do you actually have time to do anything other than review cases?

    I agree about the aesthetics of the 400R, but questionable styling is an epidemic in all case segments. I know that many of the readers here at AnandTech are more likely to enjoy understated and classic styling cues than ostentatious adornment. The Arc is not hideous, which is always a plus in my book. But I've taken a different approach than in the past, and I prefer to have as little venting as possible on the case sides, as well as the front and the back where possible. It sounds counter productive, but I've been able to achieve both high performance and almost-silence with just a little work and the right components. Sandy Bridge has gone a long way to getting performance to noise ratios down, and Seasonic's X series (with fan and without) make a huge difference, and going all SSD is fantastic if you can swing it. Perhaps the next generation of GPUs can bring the same level of performance and low noise to the table, as I think every one deserves a quiet system. The case will always make a huge difference, but the fans in cases are always going to be an issue -- I just plan on replacing them, and if I don't have to, then it's all the better.
  • Dustin Sklavos - Saturday, October 8, 2011 - link

    You'd be surprised. I'm almost done with Deus Ex: Human Revolution. I also play Magic, hang out with friends and my cat, and get swirlies from all the jocks who scream "NEERRRD" whenever I walk by.
  • ckryan - Sunday, October 9, 2011 - link

    I'm AM so jealous! You mean the jocks actually talk to you?

    I bet all the cool kids were copying off of you in that senior-level Case Review Dynamics class you had after homeroom.
  • KamikaZeeFu - Friday, October 7, 2011 - link

    "And while it looks like the enclosure is capable of supporting a 240mm radiator, clearance above the motherboard is pretty tight as it is, so I wouldn't recommend it."

    Check again, the arc is the most dual Rad friendly case you can probably get. It's wider than other cases, and the top mounts are positioned to the left of the case.
    This creates enough clearance for the thickest of radiators. The fractal design product page even has a picture of a fat Rad mounted with motherboard inside.
    The case is wide enough that the Rad clears the ram easily, with a few inches of room even!
  • KamikaZeeFu - Friday, October 7, 2011 - link

    Also the top mounts allow a variety of fans being mounted, 2x120/140 or a 180 maybe even a 200
  • cjs150 - Friday, October 7, 2011 - link

    You beat me to it.

    Really, really poor work by the reviewer, 5 mins on the Fractal Website would have given the reviewer a clue.

    This is the first cheap case that is designed for water cooling. There are a couple of things I would change (start with the fans) but nothing major.

    This is the case for my next build
  • ImSpartacus - Friday, October 7, 2011 - link

    But isn't a cheap water build kind of an oxymoron?

    Perhaps its a growing market, but I still feel that water is pretty niche. Buying a $200 case is probably fine for those who already have the time and money to invest.

    But it's always good to have more options in the market.
  • cjs150 - Friday, October 7, 2011 - link

    Saving money on the case allows me to spend more on the other bits of water cooling.

    Water cooling is for most of us - a bit of fun, an expensive hobby, good for silent computer and (when the **** thing leaks again) wonderfully frustrating
  • JarredWalton - Friday, October 7, 2011 - link

    You'll note that the review says, "While it looks like the enclosure is capable of supporting a 240mm radiator, clearance above the motherboard is pretty tight as it is, so I wouldn't recommend it." Not recommending something isn't the same as saying it won't work. For the record, I wouldn't recommend water-cooling at all. It isn't much better than air-cooling, and the potential for things to go really bad (i.e. leaking) is enough of a concern that I just wouldn't bother.

    Given the appropriate choice of a radiator, motherboard, etc. you can certainly get everything to work well. However, spending $200 on water-cooling and putting it in a $100 case just isn't a common need or desire. It's not about it being a "fun hobby" or even silent; if you want silent you're going to want a better case in the first place. Not that this is a bad case, but thin metal and plastic won't be as good as thicker metal, no plastic, and sound dampening material. By the time you make a few judicious upgrades to the Arc Midi, you could have purchased a different case that already includes those "extras".

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