"Over the past year I have looked at several high performance heatsinks from various manufacturers. The mould has stayed the same for nearly all of the coolers; build it tall and put large 120mm fans that push the air to the top or rear of the case and hope a case fan removes the air quickly. This is a very efficient way to cool a processor, but it leaves pockets of air around the motherboard.
Thermaltake has responded to the complaints of the motherboard manufacturers in a big way; they’ve brought the Orb design back into the big leagues. This time it’s as a twin fan that will not only cool your processor, but your memory, back side of your graphics card and motherboard as well."
FULL STORY @ TWEAKTOWN (http://www.tweaktown.com/reviews/1463/thermaltake_duorb_cpu_cooler/index.html)