Corsair CX600 and GTX 960?

Solution
It also depends on the price you are buying at.

In the US market, they sell for $55 which is very overpriced for the mediocre performance/quality it has.
For around the same price the newer CXM grey-labelled model can be bought, with much better performance/quality.

Quality and performance of a PSU will (mainly) affect the longevity of itself and most parts in a system.
It's not a bad buy depending on what your replacing (PSU model wise). I am not a fan of the CX series myself. I know the older ones are not nearly as good as new CX PSUs. The new ones review well. Regardless it should be a decent buy for you. Also what are your full system specs?
 
It also depends on the price you are buying at.

In the US market, they sell for $55 which is very overpriced for the mediocre performance/quality it has.
For around the same price the newer CXM grey-labelled model can be bought, with much better performance/quality.

Quality and performance of a PSU will (mainly) affect the longevity of itself and most parts in a system.
 
Solution