FrostyTech has posted a JMC 400074 Skyjet 70 Radial Fin Heatsink review

Just when you thought the "Orb" heatsink was dead, done and long since buried JMC revive life back into the design. This orb-like cooler goes by the name Skyjet 70, and it is now technically called an "extruded radial fin heatsink." Capitalizing on the technology invented by Agilient long ago for the Arcticool heatsink, the JMC 400074 is a high volume adaptation that takes the best of "dual-pass airflow architecture," and puts it in a package ready for use on socket 478 Pentium 4 or socket 603/604 Xeon processors. The unit we tested was configured for socket 478 processors incidently. From our standpoint the visual similarities between this radial heatsink and the obs of long ago are pretty superficial. Thermaltakes' orbs used very shallow fins, bent at an angle. This heatsink is designed more appropriately with 21mm deep fins. The main difference is that the area below the 67mm diameter fan impeller is not solid - it's pure fin. The fan is also actually mounted to the base, but we'll step over that point altogether for the moment.

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