The North American warranty is lifetime lifetime. We still warranty 6800GTs and we haven't made those in a very long time. As long as you or the second owner of the card own it we will warranty it. All companies say to register your product or your warranty is shorter. Both of the other lifetime warranty companies have the same 30 day registration clause. We are pretty lenient with the registration thing because for a while it wasn't in your face when you opened the box. Now when you open the box it has a big door hanger with all of the registration information and it is more noticeable but I don't know when they will be firm on it so I would recommend registering a product when you get it. I can't think of a time that we have ever declined any warranty service for not registering. Again, I am only speaking for North America.