gtx 780 or Amd 7970 crossfire?



im building it around December time
 
really ? then ask in november there maybe crazy BF deals (assuming you live in the us) and just as a general unless your buying top end (though I guess 7970 are pretty top end) its better to buy a signal card. Also by November not only should there be new cards out you will have a better gauge on how mature the new xfire drivers are concerning the runt frame issue.