If your looking to replace your 120mm case fan you just have to check out Antec's True Quiet Pro Case fans i just picked up 3 over the weekend and man what a differance in noise level..Its kinda hard to get use to im always checking them to see if there all working there that quiet...Have to admit there a bit pricey works out with shipping to $30 per fan so they cost me $90 but thats the price i guess if you want the best and they are by far