Quote from Anandtech article:"So how do you know what processor you are getting? First of all, check to see if it is listed as Palomino or Thoroughbred. Sometimes resellers do not make it obvious. Or, some do not even list it at all! Your next step is to see if they listed an AMD SKU number. Palomino XP's usually start AX while the Thoroughbred chips start AXDA. When looking around at SKU numbers, we tended to see this one often: AXP1700BOX. Do not let resellers deceive you; that is NOT a valid AMD SKU. Every few months AMD puts out a massive chart giving a nice overview on every one of their chips (SKU, core temperature, etc). If you have a few minutes, check out this great link on AMD's website. Our final words of warning, do NOT assume that a reseller is selling a Palomino or Thoroughbred CPU based on the picture. We try to screen our resellers as best as possible, but several websites publish misleading information on their sites. "