All cards so far are reference, none is non reference. The Hawx is the only one I know non reference, I don¡'t think will be that expensive, but for sure more expensive. However add to the fact that it will have a much better cooler compared to all others. If you add the expense to change cooler later on then you get to the same price. This is just speculation, we must only wait and see when they actually come out.

They can all be overvolted to the same amonunt without modded bios using afterburner, however not all reach 900mhz. Make sure you get a 1gb version and one of the factory boosted ones that have default speed 750-810 mhz, not the 675mhz versions.