Features:
The "orb" is a fairly familiar name when it comes to Thermaltake coolers because it's a design they have been using and refining for several years, with a handful of coolers falling into this design spec during that time. The MeOrb is no different; it's a circular cooler with two rings of aluminum fins which are built around a PWM-controlled 90mm fan. It's a fairly compatible cooler, working on Intel® LGA775 and AMD™ K8 939/940/AM2/AM2+ socket types.

 
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The MeOrb contacts the CPU with a copper base which transfers the heat into two 6mm copper heatpipes that go around the orb from one end of the fins to the other. As I mentioned earlier, the aluminum fins have two separate pieces. The larger one seen going around the outside of the cooler is comprised of 92 fins and the inner circle (below the fan) has 69 fins. As you can see, although it may be fairly small, there is still a lot of surface area with the large number of fins. With all this, the height of the cooler is no taller than only 47mm!

 
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In order to keep the design of this cooler as compact and efficient as possible, the 90mm fan is built right into the center of the heatsink. This is unlike traditional coolers which usually have a fan mounted on top of the heatsink portion. Although this means you can't replace this fan when it's time is up, it does have a MTBF of 50,000 hours so you would have to run it 24/7 for 6 years before it might fail - at that point you probably will have a new computer! The MeOrb cooling is entirely PWM controlled so on supporting systems it will automatically adjust it's fan speed based on the temperature of the CPU. Thermaltake does not state minimum and maximum noise levels but simply that it's noise level is "16dBA". Fan speeds will range from 800-1700RPM while being able to push a maximum of 38.9 CFM of air. Low noise output is always a critical buying factor for things like HTPCs where you don't want a loud computer running in your living room or home entertainment room!