According to McCone, the generator was 20 times more efficient than any prior model.

Initial manufacturer data pointed to an increase of at least eight percent over the prior model.

They found that the low-speed prior model provided better fits to the human tactile tau effect data.

Reviewers noted Siri, the new camera, and processing speeds as significant advantages over the prior model.

PowerBook G3 and prior models presented it right side up to the computer's owner when the lid was closed.

The price of the new version is staying the same as the prior model.

The support amount is adjusted as in the prior model.

When examined from the standpoint of gene selection, many biological phenomena that, in prior models, were difficult to explain become easier to understand.

This classification is based on whether there is a prior model and, if so, how it is used.

On July 20, 2011, Apple released an updated model in the same form factor as the prior model.