Quote Originally Posted by IsLNdbOi View Post
Well the surface of the bead-blasted version is supposed to create more air turbulence around the heatsink which supposedly would make it cooler, but I doubt anyone would actually notice a difference.
I doubt it would make any measurable difference, not like your running water over the top of them. On the downside the mounting surface is bead blasted on the first version as well, which would probably make more impact than the top. It's still pretty smooth though. Godd nuff.