i have the cek734 and it's quiet. great cooling and i can't even hear it over the 80mm fans i have in the front and back. those 80's are quiet too, not the high output ones. if i were you, i'd hold off on buying a taisol now, and wait another week or so because they have a new, forged heatsink coming out that will deliver even better cooling. there's a thread somewhere in this forum. it's on taisol's site too. it's the cgk742 or "Big Bad Voodoo Daddy."