Quiet and efficient cooler

Positive:
- = 140mm fan to cool it must rotate slower than a 120 or 90, so it makes less noise. It is silent at low speed. At high speed, it cools better than a smaller fan.
- Possibility to attach a second fan configuration "push-pull" to further increase performance. The kit comes with fasteners and foams for the second fan.
- Great price for a cooler of this level of performance.
- For a 140mm cooler remains reasonably sized, with a radiator that remains thin. This is still a 140mm so it takes a certain place (see first negative point) but it creates fewer problems than similar coolers.

Negative:
- Because of its size, it can block certain ports. On my motherboard (Asus Z87-A) it impinges on the first memory location. We can still put a bar, but not too high a radiator (Corsair Vengeance genre it does not pass, but Vengeance LP no problem). The cooler also encroaches on the first port PCIe. Not that the graphics card, the one just above. I could put a short guy WiFi card, but not a long card.
- Another major problem: attention to the task! This is not a problem if you have room in your case but it is a point to check. My Define R4 it fits.
- A little liquid with thermal paste. Bizarre that ...

Other notes:
- Installation without particular concern but not necessarily easy. Recommended for experienced users and prudent.

Despite the "problems" in size, I put 5 stars because it's a purchase I do not regret. I have a better performance than entry-without spending a fortune for a premium.