Get a big nice heat sink on the CPU like a Silver Arrow or something similar, you can run those fans pretty quiet and still get very decent cooling.
Research aftermarket cooling on the 570/580 and choose the most quiet solution, for the best value for your money of course.
Here is a chart you can use to gauge difference in noise (eg.570SLI).http://www.guru3d.com/article/evga-gefo ... d-review/8
The aftermarket coolers from MSI-Lightning/Asus-DCUII all work in the same noise field for 580 and 570 cards.
Of course everything ramps up when you've been gaming for a while, but then you've got gaming noise and won't notice it that much. It's when you're surfing on the web that you want everything nice and quiet.