This has got to be one of the biggest graphics cards I’ve ever seen, Its huge. The R600 sizing up at 12.4″ is the OEM version, the retail version is 9.5″ long. Why the difference? I don’t really know, it seems odd that the card will have two versions that are so different in size yet seem to be the same except for a difference in power consumption.
Check out the story as told by X-Bit Labs