The unending drone of your CPU cooler driving you mad? Then perhaps the Gelid Tranquillo can help. With an ultra low-noise PWM fan, but still packing four copper heatpipes and a big stack of cooling fins, check out this terrific low-noise HSF.

The Cooler Master Hyper Z600 brings something a little different to the table with support for totally passive, single and dual fan cooling. Can it still perform without the help of additional airflow and just what has made Harry so happy with it? There's only one way to find out! Why are you still reading this?

OCZ is back to settle the score with the Vendetta 2 heatsink. With a larger low noise 120mm fan, and even more cooling fins, it promises to improve on the original Vendetta and then some! We strap it into the bit-tech test rig and find out if the Vendetta 2 can settle its feud with the competition.