As you can see the box is the same for both the 5710 Silent and 5710 PWM. On the front you can see the fans for each product which from the outside look identical. Also, the sockets that the product will work with are clearly labelled.
On the side you see GlacialTech's design philosophy and images of the mounting accessories that are included with the cooler.
On the rear of the package you can see which model is inside of the box. GlacialTech places a sticker showing if a Silent or PWM model is being sold.
The other side show the specifications and all of the CPU models that are supported.