If its like the same price but I wouldn't pay more for one. You can normally just overclock a regular card to factory overclocked settings. Unless they starting hand picking gpu for the factory overclocks but I didn't think they did.
when card says it needs a minimum of say a 600W psu, you don't actually need one. two 8800gt's can run on an antec earth watts 380 yet they require more then it.