GTX 480's are definitely Palit at the moment. Palit are the one of (if not) the world's largest manufacturer of VGA cards, with a 40% market share in Europe, and 60% in Asia. They make a lot of OEM cards which are re-branded as some of the common brand names that everyone's familiar with.
http://www.legitreviews.com/article/853/1/
http://www.legitreviews.com/article/853/1/