Hello to everyone again. Sorry if I'm being a pain in the rear with all the questions I have been posting. But I want to make sure about things before I start my build. Some of the questions I have been coming up with I researched and found the answers for before I made a #$%@ of myself. This next one I came straight to the source, hear at AMD. OK here goes. At the very end of the serial number on the chips there is the letters as follows: BOX, WOF, CBX An example is: 100-10000000023BOX, OR ----> (WOF, CBX) It may be a stupid question but I have often wondered about that. The number that I put in is not exactly correct it was only a example. Thanks again in advance.