Noise and Thermal Testing, Stock

Admittedly with only one comparison point, and that point being about $40 more expensive, the results here are going to be a bit unusual. The Antec Eleven Hundred was clearly designed for performance first and acoustics second, while the Corsair Obsidian 550D's priorities are the other way around. Still, our testbed was refreshed only recently, and we're looking forward to adding more results over time. So while the Obsidian 550D is going to be a potentially interesting comparison point, what we're really looking to ascertain is how much headroom the Eleven Hundred has to work with.

CPU Temperatures, Stock

GPU Temperatures, Stock

SSD Temperatures, Stock

Thermally, the Eleven Hundred puts in a relatively strong showing when taken on its own merits. While we can't strictly compare it to the cases we've previously tested, I can tell you these results are more on the low side. It's taken a while to break my habit of assuming a negative pressure cooling system is inherently "bad," but enclosures like the Eleven Hundred can justify it. With so much ventilation, the Eleven Hundred doesn't have a very hard time getting fresh air in.

CPU Fan Speed, Stock

GPU Fan Speed, Stock

Noise Levels, Stock

Remarkably the Eleven Hundred isn't particularly loud at stock settings, either, but you'll notice the fans also don't have to work anywhere near as hard as they would in a much more enclosed case like the 550D. This is an important thing to note when you're talking about the balancing act between acoustics and performance; if an enclosure channels air well enough, the fans don't have to work as hard, and thus remain quieter.

Testing Methodology Noise and Thermal Testing, Overclocked
Comments Locked

40 Comments

View All Comments

  • Stahn Aileron - Monday, April 9, 2012 - link

    Would it be too much to ask that you actually place the ambient tempurature during testing somewhere on the graphs themselves so we have a readily accessible reference point right there on the graphs? It would also work as a reminder to readers what the conditions are.
  • Dustin Sklavos - Monday, April 9, 2012 - link

    The ambient temperature is going to vary from test system to test system, that's why I switched to listing the delta.
  • Rick83 - Monday, April 9, 2012 - link

    You did check, that the delta is a constant over ambient temperature though, did you? It may not be for every case. Also, of course, fan speeds will be impacted by ambient/internal temperature.

    If you can, you should probably run two series of tests, one in the morning and one in the evening, and then either average that or use one measurement, but at least comment the other. At least for noise, we need ambient temperature, as otherwise that value is completely without base for comparisons.
  • kandrtech - Monday, April 9, 2012 - link

    Those familiar with thermodynamics, and the equations utilized, would agree that the delta approach is the best. Variances of a few (or 10) degrees on ambient will not appreciably change the delta results. By appreciably, I mean you'll see differences out to one or more decimal places . . . .
  • niva - Monday, April 9, 2012 - link

    Are you talking 10 deg C or F?

    Ideally your ambient temperature should be somewhere in the +/- 5 deg of 70 deg F. These are the normal temperatures most households are kept at. There may be a significant difference between the noise produced by components at 65 deg F, and someone's house which may be normally kept at 85 deg during the summer daytime because of lack of AC?

    And I'm talking about idle situation here...

    The point was valid, just include the temperature in your test data.
  • bobbozzo - Monday, April 9, 2012 - link

    The article describing their new methodology for case testing seems to indicate that ambient temps are maintained between 71-74F.

    http://www.anandtech.com/show/5709/introducing-our...
  • ShieTar - Tuesday, April 10, 2012 - link

    But those familiar with modern PC design are aware that fan-control systems generally try to achieve a constant CPU/GPU-temperature. Thus when you raise the ambient temperature to somewhat higher levels, CPU/GPU fans tend to speed up, giving you lower Delta-T values at increased noise.

    Thus it is important to still run these tests at comparable ambient temperatures, and if this is indeed checked at each test, it should be no problem to change the title of the temperature graph to read "Delta over ambient at 20+/-2°C". Or whichever is the range that is controlled and accepted by the tester.
  • O8h7w - Saturday, April 14, 2012 - link

    I feel perfectly good about showing the temperature as delta above ambient instead of absolute temperature. But it seems many readers would like to see the ambient temperature at the time of testing reported as well, and I have to agree.

    The way of doing this that would make perfect sense in the graphs is to modify the labels to look like this:
    Antec 1100
    @ 23°C ambient
  • Lucian2244 - Monday, April 9, 2012 - link

    Good review, i was wondering how it would look with a mATX in there.
    Is it just me or their cases get uglier and uglier ?
  • Iketh - Monday, April 9, 2012 - link

    It's not you... this case is ugly... AND stupid...

    Enough with filterless side vents already! Why even have side vents? That's a damn 80's design, speaking figuratively...

Log in

Don't have an account? Sign up now