Dell inspiron 15r heating is not a new issue to discuss, as there had been several complaints from the customers about this.
Even though Intel claims that its processors do not heat much, it seems to be quite unusual this time probably because of the high RAM usage compatibility with its ATI Radeon graphics card.
There seems to be quite a few laptops that are free from heating issues. These issues are however, not much seen in Dell Inspiron models, if not totally but atleast neglegible.
These power measures would definitely help to reduce and minimize Dell inspiron 15r heating issue.