ASUS GTX960 Strix Review
All of the Maxwell GPUs are extremely power efficient which leads to some low temperatures. Combine this GM206 GPU with the DirectCU II cooler and, as you can see, even heavily overclocked it barely hits 65°C with the fans remaining whisper quiet.
There are two main targets for the GTX960, those who own a GTX750 or under, and its AMD rival is the R9 280. When it comes to power efficiency it's no contest at all. The GTX960 Strix draws 200W less than its Radeon opponent. In other words you could SLI the GTX960 and still not get close to the power requirements of the AMD offering.