Um
This question doesn't really make any sense. The Pentium D 930 is one of many Pentium Ds available. There are two different kinds of Pentium Ds: Smithfields (designated by having an 8xx series name, like the Pentium D 820) and Preslers (9xx-series Pentium Ds like the 930).
Among the Preslers, the older Preslers consume more power and produce more heat than the latest Preslers. All Preslers consume less power and produce less heat than Smithfields.
Smithfield = bad
Prelser = not as bad