Recently I made some upgrade and there are only three noise sources left in this system (2 low speed fans & 1 GreenPower hard disk). Below is my configuration:
Antec Solo, Noctua S12@800rpm as case fan
Seasonic X-400 fanless
Intel E8300 2.83GHz, HR01 PLUS + SFLEX-E@600rpm
Sapphire HD3650, AC S1 fanless
WD GreenPower 1.5TB EARS
The measured temperatures are listed below:
Ambient temperature is 22C.
Idle: AC Power (64W), Motherboard (36C), CPU Tcase (24C), GPU (43C), HD (29C)
Load: AC Power (127W), MB (42C), CPU (42), GPU (62C), HD (34C)
Where "Load" is to run Prime95 (Torture Test --> Blend) and run Furmark (Stability Test +Xtreme Burning mode) together for 20 minutes.
However, I met a strange issue and need your advice: I listen from ~50cm of case rear. It's very weird that if I open the side panel, the world becomes silent and I can't perceive noise in bedroom (though it's not as good as SPCR's chamber). But after close the side panel, the noise becomes significantly larger. It sounds like wind or reverberation.