From the principle of Landauer to the computer of Landauer

In this article questions of the Landauer’s principle application to classical computers are discussed. It is shown that this is connected mainly with the assumption of isothermal condition of switch cells’ (processor’s registers) working. It leads from previous author’s works that this is not true for classical computers. Comparison with data for CISC-processors confirms that processors are working at conditions far from isothermal ones. It is supposed that if one provides isothermal conditions due to intensive heat evacuation from crystal area and cleaning memory registers before every calculation cycle principally new classical computer (Landauer’s computer) could be created. This computer could solve non-polynomial problems in polynomial time.