TweakTown uses a different method for testing CPU heatsinks which allows for an even playing field across all product tests. We feel that by using the same ambient temperature and strict lab-like testing procedures we are able to accurately compare one product to another. More information on our testing procedure can be found in the T.E.C.C. article here.
As you can see, the Thermaltake MaxOrb bests everything we have tested so far since we started using the T.E.C.C. method. The Intel and AMD retailers didn't stand a chance and were beaten by around 10 degrees C in both idle and load settings. The Rosewill Z5 was very close but the MaxOrb proved to be just a little better.
When it comes to SPL the MaxOrb is a bit louder than the Rosewill coolers, and comes very close to the retail coolers from Intel and AMD. Don't let the charts fool you though, with the built-in rheostat it is possible to reduce the fan speed thus reducing the noise, but of course your temperatures will suffer also.