Corsair Obsidian 550D Quiet Mid-Tower Case

Cases|Damping
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Test Results: Radeon HD 3300 IGP


System Measurements
System State
Idle
CPU + GPU Load
System Fans
9V
CPU Fan
9V
12V
CPU Temp
26°C
47°C
44°C
SB Temp
34°C
35°C
35°C
HD Temp
32°C
32°C
32°C
System Power (AC)
49W
151W
151W
SPL@1m
20 dBA
20 dBA
21 dBA
Ambient temperature: 22°C.

Our IGP test system measured a modest 20 dBA@1m with the CPU and system fans at 9V. On load, the CPU temperature rose by 21°C while the Southbridge barely heated up at all. There was no difference in noise level (the power supply fan might have ramped up but was drowned out by the rest of the system). Speeding up the CPU fan to 12V lowered the CPU temperature by 3°C and increased the noise level by 1 dB.


Our HD 3300 IGP test system measured 20 dBA@1m on load with the stock fans at 9V and CPU fan at 9V.

While our SPL measurements were low, we could hear a low pitched hum being generated by the system, likely the result of hard drive vibration. We could feel the vibrations in the case. Typically, this effect is caused by loose side panels and/or hard drive cages, but both are quite solid in the 550D. In this case, the culprit seems to be hard drive trays which don't snap tightly into their cages.

IGP Configuration Comparison (Load)
Case
NZXT H2
Antec Solo II
Fractal Define R2
Corsair Obsidian 550D
System Fans
rear, fronts @low
rear @low
rear & front @12V
rear, fronts @9V
CPU Temp
51°C
47°C
51°C
44°C
SB Temp
38°C
38°C
38°C
35°C
HD Temp
37°C
35°C
34°C
32°C
SPL@1m
19 dBA
19~20 dBA
19~20 dBA
21 dBA
CPU fan set to 12V.
Ambient temperature: 22°C.

With our IGP test system, the Obsidian 550D fared well against competitors. Though the noise level was 1~2 dB higher, the 550D had lower temperatures across the board.



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