I recently started to notice a faint hissing noise that comes from my Antec Phantom 350. This one is installed outside my case where there is more airflow. I get a really faint noise while loading some games, but not when playing them. For example, when I start SWAT 4, that noise is present while the game is loading in memory. Once the game is loaded, the noise is gone. I get sometimes the same noise when I scroll on some webpages that use heavy flash animations (THG or gamespot for example). The sound is barely audible, but it's the only thing I can hear right now when my speakers are unplugged.
It seems to happen when the vCore hits 1.5V for some times. The CPU is an Athlon 64 3400+ (Newcastle) and the video card is a Radeon X800XT PE, both running on an Asus K8N-E deluxe, and watercooled by a Reserator. My CPU and GPU temperatures are fine...
Does it mean that the PSU is having a hard time, or it's a normal behavior of the Phantom? Is this coming from a coil?
So far, this system is dead stable... Here are my current voltages. They are about the same at full load:
