I bought a corsair h50 a while back from a friend brand new in the box, i've been using it for 2 months and it's ran great, temperatures are wonderful, i've always noticed that when you first turn on the computer you hear a swish sound of water as it's first starting up. Overall the unit is very quiet, but every now and then, sometimes can hear the swish when running a cpu intensive game or prime 95. Earlier today, tried to stress my cpu as much as I could and I heard a sound almost like a straw for about 10-15 seconds, I was able to record a few seconds. Another noise I heard was almost like a grinding sound or a coffee maker, this I have not figured out if it's coming from the unit or from my harddrive or my fans on my GPU. I'm still trying to narrow that down, overall the unit seems to have a small hum or vibration but it's pretty quiet. Overall it's starting to make me feel paranoid about the unit, is this something of concern or normal? I've heard some users say that this is typical for airbubbles in these units. Any thoughts?
http://youtu.be/bx1KZxEGu3Q
http://youtu.be/bx1KZxEGu3Q
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