There are no reference boards. ATI is seeding reviewers with Frankenstein cards that ARE NOT representative of what you will be able to buy at retail. With the HD 5830, ATI basically copped out and is allowing their board partners to design the cards without providing a reference design. This could lead to a huge difference in terms of component selection and quality when going from one manufacturer to the next.
Nonetheless, I am still excited or this card since some of the designs look downright great.