Unless you live in Asia there is no way to determine them by the box. I would think there is a retailer out there that pretests them and sells them for a little more garaunteed to be a Radeon SE as we call them. I believe their base clock is 200mhz. OCs of 230/250 are not far fetched. In Asia they mark on the box that it is the 200MHz version here we have to have a guessing game! You can look at your cards RAM. Determine the numbers that stand for NS on the Ram. Should be like 55 somewhere or something. Then go to a local
www.marketproshows.com and look at 64MBs if they will let you. Look close and see if they say 5 instead of 55 or 5.5. Thats all I can say. But I have never asked a vendor to let me look at a card only CPUs to determine core steppings.