My AIO has been iffy for a while now, i hit good temps and all that But the sound my Kraken x62 makes at high RPM although quiet, its still concerning when i hear an occasional hum after it hits a high RPM. Is this normal? I RMA'd my previous Kraken and is had a similar issue yet was more of a broken pump, im just not sure if this is the same. I am still yet to change the TIM on it so maybe? I dunno at this point.