Antec Nine Hundred Two Gaming Case

Cases|Damping
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TESTING

System Configuration:

Measurement and Analysis Tools

  • CPUBurn K7 processor stress software.
  • FurMark stability test to stress the integrated GPU.
  • GPU-Z to monitor GPU temperatures and fan speed.
  • SpeedFan to monitor system temperatures and fan speeds.
  • Seasonic Power Angel AC power meter, used to measure the power consumption of the system.

Primary Audio Test Tools

System temperatures and noise levels were recorded with SpeedFan and GPU-Z (if possible) at idle and on load using 4 instances of CPUBurn K7 to stress the CPU and FurMark with the Xtreme Burn option (if possible) to stress the GPU.

BASELINE NOISE

Noise measurements were made with the rear, top and one of the front fans supplied at standard switch settings in various configurations. The air cavity resonances inside a case amplify fan noise, as do any vibrations transferred from the fans into the case, so these measurements can be regarded as the baseline SPL levels for the Nine Hundred Two with the stock fans.

Antec Nine Hundred Two Baseline SPL
Measuring mic at 1m at diagonal angle left/front of case.
rear
exhaust
top
exhaust
front
intake
SPL
Low
Off
Off
15 dBA
Medium
25 dBA
High
32 dBA
Off
Low
Off
18 dBA
Medium
26 dBA
High
36 dBA
Off
Off
Minimum
25 dBA
Maximum
40 dBA
Low
Low
Off
20 dBA
Low
Medium
Off
26~27 dBA
Medium
Low
Off
26~27 dBA

The Big Boy ceiling fan actually sounds more pleasant than the rear exhaust fan, but measures higher. Both are fairly quiet when set to low and the overall acoustic character is broadband. The rear fan exhibits a slight hum and drones at medium speed. The rear fan sounds less turbulent, but it clicks at close proximity and at medium speed the fan's motor seems wobbly. The front fan sounds very smooth, but due to its enclosed environment it sounds hollow. The resistance created by its air filter and the shorter distance between it and our mic results in much higher SPL values compared to the other fans in the system.

With the entire front panel acting as an enormous intake, not using either of the front fans is recommended for a quiet system. Depending on the system configuration, it may be advisable to use both top and rear fans on low. At 20 dBA, this configuration is fairly quiet, at least for the gamers to whom Antec is marketing the Nine Hundred Two. If either of the fans is set the medium, the SPL increases to 26~27 dBA. This is noticeably loud to us, but the noise generated by the system's video card cooler may still drown it out.



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