 Amazon's business strategy was stated in 2011 as making money through sales of digital content on the "Fire", rather than through sales of the device itself., the Kindle Fire was the second best selling tablet after Apple's iPad, with about 7 million units sold according to estimates by Forrester Research and Amazon's tablets were the fourth best selling.On September 6, 2012, the Kindle Fire was upgraded to the second generation, and its price was reduced to , RAM upgraded to 1 GB and processor clock speed upgraded to 1.2 GHz.