OCIA.net has posted a review of the CoolJag JVC682A Heatsink! Here's a snip.

The fins on the JVC682A are slightly taller than that of the OEM cooler, but not quite as consistent in spacing. Of course, this has a lot to do with the JVC682A being manufactured with a skiving technique, and the OEM fins being affixed to the base separately. Skiving ensures the best possible conduction of heat.