When they say "hell of a lot quieter", they meant it, seriously. It's no joke, the Seagate Barracuda IVs blow away any 7200rpm hard drive out there in terms of acoustic. If you haven't heard a CudaIV, dont even bother to make an arguement. I once tried to make it seek and hear how loud it is, and I have to literally put my ear ON it to notice the noise. But of course, they arent the greatest performers in the world, but they'll definitely satisfy anyone who desires a quiet computer. Did I also mention they're the coolest looking hard drives out there?