Hi Tech Legion posted a review on the Noctua NH-U12P Special Edition SE1366 Heatsink

When doing your research for the best air cooling solution you will also need to think of what you'll be using your system for. Will you be using it as a work station, for gaming or are you going to overclock the CPU to increase performance? All these factors directly affect how much heat your CPU will generate and each will require a different amount of cooling. As a rule of thumb (or at least my own) a good heatsink should not exceed more than a 13 to 15 C increase between idle and load stock and when the CPU is overclocked, a minimum of 20 C. Anything under that increase I would consider highly efficient.The Noctua NH-U12P Special Edition SE1366 is a heatsink and fan combination designed for Intel Core I7 Processors. The NH-U12P by Noctua is designed in Austria and comes with two 120 mm fans one for intake and the other for output. The NH-U12P is designed with a copper base and heat-pipes (6) and has aluminum cooling fins. The Noctua NH-U12-P Special Edition SE 1366 also comes with a 6 year warranty.

Noctua NH-U12P Special Edition SE1366 Heatsink Review